Rough Tourmalines
We are offering an extraordinary and rare raw ParaÂba tourmaline weighing an impressive 3,005 carats (601 grams). This gemstone, renowned for its unique neon-blue to greenish hue, represents the epitome of exclusivity and rarity in the gemstone market. Details of the Gemstone: Quantity: 1 Gem Weight: 3,005 CTs (601g) Color: Neon blue, with greenish undertones Density: 3 - 3.2 g/cm³ Refractive Index: 1.614 - 1.666 Chemical Composition: Complex borosilicate with copper (Fe, Cu, Mn, Al, Si) Crystal Structure: Trigonal Luster: Vitreous Fracture: Uneven, conchoidal, typically elongated crystals with triangular sections and rounded faces, clear parallel striations Fluorescence: None Hardness: 7 - 7.5 on the Mohs scale Lapidation Type: Uncut, raw form Negotiable sale value GIA Certificate Appraised value after polishing: US$60,000,000.00 FOB Gem location: Sao Paulo, Brazil Payment methods: Letter of credit or debit card
Supplier: Rough precious and semi precious stones, including aquamarine, blue agate, blue corundum, garnet, rhodolite, jasper, morganite, quartz, ruby, sapphires, tourmaline.
Tourmalines,not very clean but beautifulgreen colour Vary from very small to big
Black Tourmaline Rough size 100g 4kg India origin Price 6 usd per kg cif India Categories: Rough, Tourmaline Gemstone Black Tourmaline Shape Rough Location India Lot-No blacktour Origin India Size 100g -4kg
Nice parcel of afghans blue tourmaline for sale. Contact us for more details and pictures..
We have different color faceting rough tourmaline from famous Afghanistan mine at good price
Natural bi colour tourmaline Weight 27 carats Dimensions 13 to 6 mm long (uncut rough available too) Clarity ( Eye clean to slightly inclusion )
Rough stone tourmaline from Afghanistan different types and color
