Demantoid is the green gemstone variety of the mineral andradite, a member of the garnet group of minerals. Andradite is a calcium- and iron-rich garnet. The chemical formula is Ca3Fe2(SiO4)3 with chromium substitution as the cause of the demantoid green color. Ferric iron is the cause of the yellow in the stone.
It has the misnomers olivine and Uralian emerald.
In approximately 2003, reports began to circulate in the trade that some Russian demantoid garnets were being routinely subjected to heat treatment in order to enhance their color. Such treatment is believed to be performed at relatively low temperatures and is thought not to be detectable by gemological testing.
Supplier: Sport equipments, rough demantoid garnet, demantoid garnet gemstones.
Buyer: Sport equipments.
Supplier: Peridot , Aquamarine , Tourmaline , Demantoid Garnet
Buyer: Rough And Faceted Peridot , Aquamarine, Tourmaline And Demantoid Garnet
Supplier: Gemstones like kunzite, sapphire, tourmaline, aquamarine, emerald, citrine and demantoid garnet and top quality persian safran.
Supplier: Gemstones, sapphire, ruby, emerald, tourmaline, apatite, aquamarines, alexandrite, garnet, tsavorite, demantoid, sphene, spessartite, topaz, labradorite, amethyst, spinel, opal, citrine, jadeite, quartz
Gemstone : Ruby/ Mines : Burma/ Faceted : Yes/ Cabochon : Yes/ Lab created: No/ Centrally Drilled/ Color : Pink and Red/ Range from $30 to $100 Contact for Bulk Enquiries, for any Precious and Semi-precious Gemstone.
Gemstone : Pink Sapphire Mines : Madagascar (Africa)/ Faceted : Yes/ Glass Filling : No/ Lab created: No/ Centrally Drilled/ Length of strand : 18 inches/ Range starting from $40 to $100 per line.
Supplier: Rough gemstones, peridot, black tourmaline, ruby, bicolor sapphire, emerald, chrysoberyl, aquamarine, pyrope garnet, hessoinite garnet, green garnet, demantoid garnet, iolote, spinel, phenakite
Supplier: Rough gemstones, peridot, black tourmaline, ruby, bicolor sapphire, emerald, chrysoberyl, aquamarine, pyrope garnet, hessoinite garnet, green garnet, demantoid garnet, iolote, spinel, phenakite
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Supplier: Rough gemstones, peridot, black tourmaline, ruby, bicolor sapphire, emerald, chrysoberyl, aquamarine, pyrope garnet, hessonite garnet, green garnet, demantoid garnet, iolote, spinel, phenakite
