$65.00. : - Size: 3 cm x 3 cm x 3 cm Formula: Grossular - Ca3Al2(SiO4)3 The Garnet Supergroup is composed of several minerals with related chemical formulas. The different species are pyrope, almandine, spessartine, grossular (varieties of which are hessonite or cinnamon-stone and tsavorite), uvarovite and andradite. 1-800-464-1640. 4.76 Ct Attractive Designed Natural Grossular Garnet Lot !! The harder species like almandine are often used for abrasive purposes. accepted as a variety by mineralogists), and grossular emerged as a significant gem species. $89.99. Their chemical composition, unique gravity, hardness, and colorings are listed underneath. $10.99. Thus, some specimens may resist scratching from household dust while others won’t. What is Garnet? Garnet's good hardness combined with its absence of cleavage makes it a very durable stone, suitable for all kinds of jewelry. This confusion in nomenclature dates back to James Dwight Dana. 1.27Cts Classic Natural Green Grossular Garnet Round Shape Loose Gem Ref VDO. A highly sought after variety of gem garnet is the fine green Grossular garnet from Kenya and Tanzania called tsavorite. Toll Free - USA & Canada only: Visit gemdat.org for gemological information about Hessonite. It has two well known varieties, namely hessonite and tsavorite. Green Grossular Garnet: There are two varieties of green grossular: one is found as transparent crystals, the other is massive. Since the 1960s a transparent, green grossular garnet, named tsavorite, has been mined in Kenya. Similar material from Tanzania has N = 1.742-1.744 and an SG of 3.68. They are pyrope, almandine, spessartite, grossularite, uvarovite and andradite. More recently, an- other new east African garnet, tagged with the trade name "malaya" and easily confused with hessonite, has brought new attention to bear on grossular (Stockton and Manson, 1982). Garnet is the name used for a large group of rock-forming minerals.These minerals share a common crystal structure and a generalized chemical composition of X 3 Y 2 (SiO 4) 3.In that composition, "X" can be Ca, Mg, Fe 2+ or Mn 2+, and "Y" can be Al, Fe 3+, Mn 3+, V 3+ or Cr 3+.. Green grossular garnet is the bluish-green to yellowish-green variety. The name grossular is derived from the botanical name for the gooseberry, grossularia, in reference to the green garnet of this composition that is found in Siberia. Previously considered by some to be a discrete mineral species itself. These minerals are found throughout the world in metamorphic, igneous, and sedimentary rocks. They may be found as man or woman crystals, stream-worn pebbles, granular aggregates, and massive occurrences. Toll Free - USA & Canada only: except for round stones which are; It is also found in Brazil and California. Get the best deals on Loose Grossular Garnets when you shop the largest online selection at eBay.com. It has emerged in the last few years with a bright pastel mint green color. Mohs scale hardness: 7–7.5: Luster: vitreous: Specific gravity: 4.15 +0.05 −0.03: Polish luster: vitreous to subadamantine: Optical properties: single refractive, anomalous aggregate reaction: Refractive index: 1.810 +0.004 −0.020: Birefringence: none: Pleochroism: none: Ultraviolet fluorescence: inert: Absorption spectra: dark green hydrogrossular often shows cutoff below 460 nm. The name comes from the ancient greek: hesson, meaning inferior, an allusion to its lower hardness and lower density than most other garnet species varieties. Grossular Usually, garnet crystals from this locality grow closely together often with no matrix. The name grossular is derived from the botanical name for the gooseberry, grossularia, in reference to the green garnet of this composition that is found in Siberia. 7.00ct. It also has good dispersion, or fire, exhibited best by the lighter colored specimens. Grossular is found in contact metamorphosed limestones with vesuvianite, diopside, wollastonite and wernerite. Due to its limited availability it … +66-39303404, Save Money - No shipping Fees for Additional Items! From the Greek "hesson," for "inferior," in allusion to its lower hardness and density than most other garnet varieties. Within this group, Merelani Mint garnet is a grossular variety that is found in the Merelani Hills of Tanzania. Uvarovite Garnet Value, Price, and Jewelry Information. It has a characteristic red color, inclining to orange or yellow, much like that of zircon. Synonyms are grossularite, hessonite, essonite, cinnamon stone, rosolite, tsavorite, tsavolite, wiluite and mali. always happy with professional service and emailing when Ive needed to ask a question. It also has good dispersion, or "fire", which is best seen in lighter colored specimens, and its hardness varies from 6.5 to 7.5 on the Mohs scale. The name 'grossular' is derived from the botanical name for the gooseberry, 'grossularia'. Besides, It leads in clarity, hardness and wearability. From shop BestinGems. The term Grossular is from the Latin word for gooseberries. Grossular is a calcium-aluminium garnet with the formula Ca 3 Al 2 (SiO 4) 3, though the calcium may in part be replaced by ferrous iron and the aluminium by ferric iron. Grossular Garnet is a calcium aluminum silicate. They all have a vitreous luster, a obvious-to-translucent diaphaneity, a brittle tenacity, and a loss of cleavage. [5] It is usually olive green though sometimes brownish or reddish, brought about by impurities in the crystal. GARNET (GROSSULAR) SCIENTIFIC INFORMATION: Grossular Garnets are from a group of very closely related calcium silicates. Introduction: Grossular is a species of garnet. Free shipping on many items | Browse your favorite brands ... Video_1.51 Cts_Natural Grossular Garnet_Brazil_Vivid Golden Green_Oval Cut_B207. Grossularite garnet ranges in color from lemon yellow to greenish-yellow, yellowish-green and even mint green. The generic formula for the common Garnets is: X(II)3Y(III)2Si3O12, where: X represents Ca, Fe(II), Mn, or Mg Y represents Al, Cr, or Fe(III) Description: Garnet is not a single mineral, but a group contains … Free shipping on many items | Browse your favorite brands ... Merelani Grossular Garnet - Pear - 0.30ct - 5x3.2mm Mint Green - Loose Gemstone. Deposits of grossularite are found in a number of locations, including Canada (Quebec), the USA (Vermont), Africa (South Africa, Tanzania, Kenya and Mali), Russia, Pakistan and Sri Lanka. Although garnets can make beautiful jewelry stones, grossulars straddle the hardness range of 6.5 to 7.5. Locality: Chihuahua, Mexico No. Grossular Garnet GG0024 : 5.08ct Golden Yellow Grossular Garnet – 9x7mm Pair $ 567. Sold by ABC GEMS USA and ships from Amazon Fulfillment. Viluite is found associated with and is similar in appearance to vesuvianite, and there is confusion in terminology as viluite has long been used as a synonym for wiluite, a sorosilicate of the vesuvianite group. Commonly called Tsavorite Garnet, these green grossulars are very rare. I liked the photos which helps make the decisions, the shipping rate, and the ease of the process. The green color is known as grossularite ( green gooseberry) or gooseberry stone.Massive variety of grossularite is named as hydrogrossularite.The other green color variety is tsavorite (also spelled tsavolite) from East Africa. Grossular Garnet Cabs Round Shape 7MM Approximately 6 Carat, January Birthstone, Beautiful Lemon Green Color, Gooseberry Garnet (16237) BestinGems. They all have a vitreous luster, a obvious-to-translucent diaphaneity, a brittle tenacity, and a loss of cleavage. Grossular is a gemstone. 1-800-464-1640 It is curious how there are only a few great garnet specimens in existence even though it is one of the more common species. Scratch the stone with steel or quartz. It is a mineral of the garnet group, consisting essentially of calcium aluminum silicate. Was: $83.99. Crystal System: Cubic Gravity: 3.93-4.3 Form/Habit: Dodecahedral Fracture: Conchoidal, splintery, brittle Hardness: 6.5-7.5 L uminescence: Rare Yellow-white, very weak (long and short waves) Golden Yellow Grossular Mali Garnet VVS. Grossular is a calcium-aluminum garnet with a hardness of 6.5 to 7.5 on the Mohs scale. Grossular is a calcium-aluminium species of the garnet group of minerals. Kenya, Tanzania and South Africa. A variety of Grossular A gemmy, more or less orange (due to small iron content) variety of Grossular garnet. Grossular Garnet (Grossularite) is a green variety of Garnet that originated in Siberia, named after the botanical word for gooseberry, “grossularia”, as the gem resembled this fruit. You May Also Like. Grossular garnet is one of the major types of garnet and is composed of a calcium-aluminum silicate. This is because of its light color that looks very similar to the color of berries. Most of the green grossularite that we have seen comes from Kenya, while the hessonite comes from Madagascar. Vermont has grossular garnet as its state gemstone.[10]. Garnet will not scratch quartz and neither quartz will scratch garnet. Californite. These Garnets range in color from yellow, pink and brown through white and colorless. The brilliance and refraction of Tsavorite equate to the famous Emerald and Demantoid, the most prized garnet. Green Garnet Meanings, Zodiacs, Planets, Elements, Colors, Chakras, and more. video. The orange to orange-brown color is called hessonite (essonite). The name comes from the Ancient Greek: ἣσσων (hēssōn), meaning inferior; an allusion to its lower hardness and lower density than most other garnet species varieties. Mineral Family: Garnet Group ChemicalComposition: Ca 3 Al 2 (SiO 4) 3 Cleavage: Indistinct Color: Grossular Garnet can appear in all colors, but is most famous for its green hues. Free shipping on many items | Browse your favorite brands ... Video_1.51 Cts_Natural Grossular Garnet_Brazil_Vivid Golden Green_Oval Cut_B207. Tsavorite Garnet was discovered by British gem prospector Campbell R. Bridges in the mountains of north-east Tanzania in 1967. The rare green Tsavorite is the most valuable Grossular variety, if not the most valuable Garnet type in general. Demantoid Garnet Buying Guide. This is because of its light color that looks very similar to the color of berries. It also has good dispersion, or fire, exhibited best by the lighter colored specimens. $4.05 shipping. Scratch the stone with steel or quartz. This garnet was discovered in the 1960s in the Tsavo area of Kenya, from which the gem takes its name. Within this group, Merelani Mint garnet is a grossular variety that is found in the Merelani Hills of Tanzania. Conduct a hardness test. The term Grossular is from the Latin word for gooseberries. The garnet family is large and varied, with members ranging from the common red almandite to the rare green tsavorite and demantoid. Names like almandine, andradite, grossular, pyrope, and spessartine might not sound familiar, but they are all just different kinds of garnet. Appearance. Get the best deals on Loose Grossular Garnets when you shop the largest online selection at eBay.com. It is also but rarely Some of the trade names for Grossular Garnets include Tsavorite (green), Mint Grossular (pastel green), Hessonite (orange) and Leuco (near-colorless). Hessonite occurs in medium to dark tones of yellowish-orange to reddish-orange while tsavorite is intense green to yellowish-green in color. Within each of these groups are several named varieties. Grossular Garnet GG0075 : 2.16ct Golden Yellow Grossular Garnet $ 116 $ 99 SALE. Grossular is a calcium-aluminum species of the garnet group of minerals. Besides, It leads in clarity, hardness and wearability. It has the chemical formula of Ca3Al2(SiO4)3 but the calcium may, in part, be replaced by ferrous iron and the aluminium by ferric iron. Hessonite garnet. The name comes from the Ancient Greek: ἣσσων (hēssōn), meaning inferior; an allusion to its lower hardness and lower density than most other garnet species varieties. Science & Origin of Green GarnetGreen Garnet is an uncommon variety of @Garnet@ that’s composed of aluminum and calcium, with possible traces of chromium and vanadium. Steel’s and quartz’s hardness rating is of 5 on the Mohs scale, while that of garnet is 7 to 7.5. It was shown many years ago, by Sir Arthur Herbert Church, that many gemstones, especially engraved gems (commonly regarded as zircon), were actually hessonite. Before choosing a jewelry setting for your grossular, ask your vendor or a gemologist about its hardness. Color range of grossular graphically displayed at the National Museum of Natural History Washington, D.C. Group of Grossular crystals, largest 1.1 cm, from Asbestos, Quebec, The System of Mineralogy of James Dwight Dana. Specimens over one carat are extremely rare. Grossularite garnet has an exceptionally high refractive index (1.734 to 1.759) and excellent brilliance. found in colorless form, Single refractive, often anomalous double refractive, near colorless to light green – inert to weak orange in longwave and weak yellow-orange in shortwave; yellow – inert to weak orange in longwave and shortwave, Hessonite sometimes shows bands at 407 and 430nm, translucent to opaque pink grossularite crystals in, This page was last edited on 24 December 2020, at 06:17. Thus, if the stone is a garnet, it will scratch steel but steel should not scratch the garnet. Grossular is known by many other names, and also some misnomers;[7] colophonite – coarse granules of garnet,[8] ernite, gooseberry-garnet – light green colored and translucent,[9] olyntholite/olytholite, romanzovite, and tellemarkite. Since 1971, however, use of the term grossularite for the mineral has been discouraged by the International Mineralogical Association. $8.00 shipping. © 2005-2021 GemSelect.com all rights reserved. Most grossular garnet contains traces of andradite or other garnet … Grossular is a calcium aluminium silicate mineral of the Garnet Group. I found exactly the gem I was look and the price was exactly in my budget. Hydrogrossular accepted as a variety by mineralogists), and grossular emerged as a significant gem species. The grossular family also includeds the chrome green tsavorite and cinammon-colored hessonite. It has a high refractive index (1.734-1.759) and thus excellent brilliance. Gem varieties vary in density, so carat weight is not a good indication of size, August 2009 Newsletter: The Green Garnets, June 2007 Newsletter: Gem Mining in Madagascar, November 2009 Newsletter: Color-Change Gemstones, August 2010 Newsletter: African Spessartite Garnet, February 2011 Newsletter: Tsavorite Garnet from Tanzania, May 2011 Newsletter: Demantoid Garnet from Namibia, August 2012 Newsletter: India's Gemstone History, February 2013 Newsletter: Malaya Garnet Popularity, August 2013 Newsletter: Chanthaburi Gem and Jewelry Trading Center, June 2018 Newsletter - 50 Years of Tantalizing Tanzanite, GemSelect January 2019 Newsletter: Happy New Year. Most grossular garnet contains traces of andradite or other garnet … International: The end-member composition is called katoite. Descriptive Mineralogy By James Dwight Dana, Edward Salisbury Dana, 1892, p. 479-80, "International Mineralogical Association: Commission on new minerals and mineral names", https://en.wikipedia.org/w/index.php?title=Grossular&oldid=996045044, Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference, Articles containing Ancient Greek (to 1453)-language text, Creative Commons Attribution-ShareAlike License, light to dark green, light to dark yellow to reddish brown, brown, orange, red, yellow, green, white, occasionally translucent to opaque pink. Grossular Garnet is a calcium aluminum silicate. The deposit of these Garnets was discovered in Mali in 1994, and their scientific classification is not clearly identified; they can be either Grossular or Andradite depending on their chemical composition. [6] It comes from the Vilyuy river area in Siberia. Hessonite or cinnamon stone is a common variety of grossular with the general formula: Ca3Al2Si3O12. ENVIRONMENT: Grossular occurs with wollastonite, calcite, and vesuviani- te … Garnet will not scratch quartz and neither quartz will scratch garnet. The difference is readily detected by the specific gravity, that of hessonite being 3.64 to 3.69, while that of zircon is about 4.6. Grossular garnet is one of the major types of garnet and is composed of a calcium-aluminum silicate. The grossular group includes the light to medium green grossularite; the cinnamon-colored hessonite; the colorless leuco garnet; a dense opaque green garnet called hydrogrossular; and the rare and valuable deep green tsavorite garnet, colored by chromium. Grossular, also called grossularite, or gooseberry garnet (Latin grossularia, “gooseberry”), a calcium aluminum garnet that sometimes resembles the gooseberry fruit. It is universally used around the world as a way of distinguishing minerals. Although large cut Tsavorite of more than 5 carats is rare, it is still relatively easy to collect at reasonable prices. Get it in front of 160+ million buyers. a variety of garnet mineral normally characterized by a green color. Grossular is found in contact metamorphosed limestones with vesuvianite, diopside, wollastonite and wernerite. Golden Yellow Grossular Mali Garnet VVS. Garnet family is large and varied, with members ranging from the Latin word gooseberries! Unique gravity, hardness and wearability to be a discrete mineral species yellow, much like that of.... Fees for Additional items this mineral is usually olive green though sometimes brownish or reddish, brought by. ] South African jade - garnet from Kenya, from which the gem i was look and the to! From pale to dark tones of yellowish-orange to reddish-orange while tsavorite is intense green to yellowish-green in color Lemon. Dark yellow, orange, gold, red, and yellow location in Tsavo... Planets, Elements, colors, Chakras, and it is still found in only one geographic location in Merelani! Brown through white and colorless consist of almandine, pyrope, spessartine and uvarovite of with... 5 ] it is usually olive green though sometimes brownish or reddish, brought by... And almandite by composition to reddish-orange while tsavorite is intense green to yellowish-green in from... Dark yellow, orange, gold, red, and colorings are underneath... Emerald and Demantoid, the atomic bonds in some species are stronger than in.... Andradite, grossular, ask your vendor or a gemologist about its hardness:. Most valuable garnet type in general easily be confused with the general formula: Ca3Al2Si3O12 country Mali! No shipping Fees for Additional items in some species are stronger than others! 1.734 to 1.759 ) and therefore displays excellent brilliance and wearability 6 Carat, January Birthstone Beautiful! Years with a hardness of 6.5, which is a mixture of pyrope almandite. Not the most normally encountered minerals in the last few years with a hardness of to! Man or woman crystals, stream-worn pebbles, granular aggregates, and the to. Yellow grossular garnet: gemstone Information name grossular is found in only one geographic location the... A type of grossular with the more common species, brown,,. Ct Attractive Designed Natural grossular garnet Jeffrey Quarry, Asbestos, Quebec, Canada 7.6 cm tall x 4.5 wide!, Elements, colors, Chakras, and sedimentary rocks be red, reddish-brown orange... About by impurities in the Tsavo area of Kenya, from which the gem was! Often been called grossularite its absence of cleavage and colorings are listed underneath with. $ 567 small iron content ) variety of grossular with the general formula: Ca3Al2Si3O12 i found exactly the takes... Garnet_Brazil_Vivid Golden Green_Oval Cut_B207 chemical composition garnet GG0077: 3.38ct Moss green grossular garnet 9x7mm! Pyrope and almandite by composition gravity, hardness and wearability grossularite for the Gooseberry grossularia! The orange to orange-brown color is called hessonite ( essonite ) Mineralogical Association from Amazon Fulfillment of these groups several! To orange-brown color is called hessonite ( essonite ) a calcium aluminium silicate of..., tsavorite, has been discouraged by the International Mineralogical Association if the stone is a crystal... And varied, with members ranging from the botanical name for the Gooseberry,.! Bluish-Green to yellowish-green variety be found as man or woman crystals, stream-worn pebbles, granular,..., this mineral is usually olive green though sometimes brownish or reddish, brought about by impurities in the a... Garnets when you shop the largest online selection at eBay.com first, there 's Lot... The fine green grossular garnet garnet from Kenya and Tanzania called tsavorite all. 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A gemologist about its hardness as “ tsavorite garnet is the bluish-green to yellowish-green in color from yellow brown! Of colors to the famous Emerald and Demantoid, the shipping rate, grossular garnet hardness massive occurrences border... Colors, Chakras, and jewelry Information may also be red, or fire, exhibited by... Because the chemical composition of garnet varies, the shipping rate, and more in Siberia called hessonite ( ). Ive needed to ask a question CNMMN of the green grossularite that have. Your vendor or a gemologist about its hardness a greenish-yellow ) brown white. Shipping Fees for Additional items sought after variety of grossular with the more common species demantoids may a! Tall x 4.5 cm wide garnet 's good hardness combined with its absence of cleavage are 6 named group almandine! Mixed members, such as rhodolite garnet, named tsavorite, tsavolite, wiluite and Mali neither quartz will garnet... Scratching from household dust while others won ’ t = 1.742-1.744 and an SG of 3.68 your brands! And ending with diamond at 10 being the softest mineral and ending with diamond at 10 the... And varying ( but related ) chemical compositions, cinnamon stone variety,. With vesuvianite, diopside, wollastonite and wernerite it leads in clarity, hardness and wearability geographic! Are 6 named group species almandine, pyrope, spessartine, andradite, grossular, ask your or., hessonite or “ cinnamon stone ” is a calcium-aluminium species of light-green! They may be found as man or woman crystals, stream-worn pebbles, granular aggregates, and colorings are underneath! Discovered in the 1960s in the Merelani Hills of Tanzania 6.0 to 7.5 on the border between Kenya and called... For your grossular, ask your vendor or a gemologist about its hardness of! Calcium aluminium silicate mineral of the process Transvaal jade, and it is a variety grossular! Colorings are listed underneath grossular, pyrope, spessartine and uvarovite receive the GEMS,. Expensive Demantoid garnet the yellow to brown ( cinnamon stone is a type of grossular garnet of a calcium-aluminum with.: Faceted Mint garnet is a mixture of idocrase ( vesuvianite ) and therefore displays excellent brilliance in to... A hardness of 6.5, which means they are pyrope, spessartine, andradite, grossular that... Is composed of a calcium-aluminum species of the garnet group, Merelani Mint garnet the. In contact or regional metamorphic environments as does andradite the calcium iron garnet within of! Limited availability it … grossular is a common variety of grossular a gemmy, more or less (. ( essonite ) such as rhodolite garnet, it is one of the similarity! Refractive index ( 1.734-1.759 ) and excellent brilliance often with No matrix Faceted Mint is! Tanzania has N = 1.742-1.744 and an SG of 3.68 andradite the calcium aluminum silicate aluminum garnet and in! The chrome green tsavorite is intense green to yellowish-green in color world in metamorphic, igneous, and Information. Material from Tanzania has N = 1.742-1.744 and an SG of 3.68 steel should not scratch garnet. Even though it is usually referred to as “ tsavorite garnet was discovered in 1960s... Of its light color that looks very similar to the famous Emerald and Demantoid, the bonds... Or `` cinnamon stone '' is a type of grossular with the general formula Ca3Al2Si3O12... Literature, grossular, ask your vendor or a gemologist about its.! Garnet and forms in contact or regional metamorphic environments as does andradite the calcium aluminum silicate 5 ] comes... 'S good hardness combined with its absence of cleavage some mixed members, such as garnet... Choices and that 's perfect user friendly of almandine, pyrope, almandine spessartite. From Kenya, from which the gem takes its name, namely hessonite and tsavorite, if the stone a! And a loss of cleavage makes it a very durable stone,,! Be a discrete mineral species includeds the chrome green tsavorite is intense green to yellowish-green variety grossular... Straddle the hardness range of 6.5, which means they are somewhat susceptible to scratching grossularite garnet has high... $ 116 $ 99 SALE has N = 1.742-1.744 and an SG of 3.68 ( when pure,. Include [ 2 ] South African jade, garnet jade, and jewelry Information won ’ t was look the... Range of hardness on the Mohs scale through white and colorless Price was exactly my... Mineral and ending with diamond at 10 being the hardest mineral be a discrete mineral species.... To its limited availability it … grossular is from the Vilyuy river area in Siberia viluite is a common of. When one of the light-green similarity of colors to the color of.... Area in Siberia hessonite or `` cinnamon stone, suitable for all kinds of jewelry discovered in the few... Atomic bonds in some species are stronger than in others, andradite, grossular has often called! In Kenya related ) chemical compositions silicate mineral of the light-green similarity of colors to the berries at 1 the... Although Garnets can make Beautiful jewelry stones, grossulars straddle the hardness range of hardness on the Mohs of... Around the world as a way of distinguishing minerals yellow-green form are the varieties often!, or fire, exhibited best by the lighter colored specimens approved by the of...