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6.25CT BOLIVIAN AMETRINE BEST QUALITY STONES IGCAMCB06
- SKU
- Dimensioni (mm)
- 14.000 x 10.000 x 6.000mm
- Peso (cts)
- 6.250
- Treatment
- No Treatment
- Tipo
- Faceted
- Colori
-
- DESCRIPTION
Clinohumite is a gemstone quality magnesium silicate with a chemical formula distinguished by silicate and oxide layers. It is an extremely rare mineral and an especially rare gemstone. Clinohumite is a member of the humite group of minerals, which also includes humite, norbergite and chondrodite. Of the humite group, only chondrodite and clinohumite are known to produce gemstone quality deposits. The humite group of minerals was named after Sir Abraham Hume (1749-1838). Hume was a very well-respected English mineralogist, as well as a renowned collector of fine art.Clinohumite was first discovered in 1876. Until recently, it was thought to be one of the ten rarest gemstones in the world, with only a few thousand carats worth of gemstones known to exist in private collections. The first specimens of clinohumite were discovered in limestone blocks that had erupted from Mount Vesuvius near Naples, Italy. Later, more deposits of clinohumite were discovered in the Pamir Mountains during the early 1980s, and in the early 2000s, another deposit was found in the Taymyr Peninsula in the Far North of Russia. The most recent find was discovered in the Mahenge Plateau in the Ulanga District of the Morogoro Region of Tanzania, Africa in 2005.
Identifying Clinohumite
Clinohumite is a magnesium silicate with a color reminiscent of spessartite and hessonite garnet, but garnet is harder than clinohumite, which can help to distinguish between these minerals. Also, since clinohumite is extremely rare and limited only to a few specific regions of the world, in most cases, the mining origin can often help with identification. Gemologically, clinohumite has a hardness of 6 on the Mohs scale; a specific gravity (density) ranging from 3.2 to 3.4, similar to that of diopside; and a refractive index ranging from 1.631 to 1.668, between that of apatite and peridot. Its crystals are monoclinic, usually granular or prismatic in structure, and crystal lamellar twinning is common, which can result in a highly variable habits. Clinohumite’s distinct basal cleavage can often help identify it from other similar gems and minerals.
(IGC) WE OFFER TOP QUALITY NATURAL GOODS , THAT IS BEST QUALITY CUT AND POLISH PIECE FOR AUCTION MAKE YOUR OWN BID TO WIN VERY BEAUTIFUL QUALITY GOODS.
BUYER MUST PAY BETWENN 2 DAYS OF AUCTION END OTHERWISE ORDER WILL BE CANCEL
- AIRMAIL RAGISTERED SHIPPING 5$ 7-21 DAYS
- DHL EXPRESS/FEDEX SHIPPING 25$ 3-4 DAYS
- STRANDARD EXPRESS SHIPPING 8$ 5 TO 12 DAYS
- CHECK OUT OUR MORE ITEMS IN OUT STORE THERE YOU CAN GET MANY BEAUTIFUL GEMSTONES , BEADS AND JEWELRY ALSO MINERALS SPECIMENS
- IF YOU HAVE ANY PROBLEM WITH RECEIVE ITEM PLEASE DO NOT PUT NEGATIVE FEEDBACK WE ARE WELCOME TO SOLVE ALL YOUR PROBLEMS REFUND , RE-POLISH , RETURN , EXCHANGE ALL ACCEPTED , WE WILL NEVER LET YOU UPSET FROM US IN SHA ALLAH
- WE ACCEPT PAYPAL ONLY PAYPAL
- SKU
- Dimensioni (mm)
- 14.000 x 10.000 x 6.000 mm
- Peso (cts)
- 6.250
- Treatment
- No Treatment
- Tipo
- Faceted
- Colori
-
- DESCRIPTION
Clinohumite is a gemstone quality magnesium silicate with a chemical formula distinguished by silicate and oxide layers. It is an extremely rare mineral and an especially rare gemstone. Clinohumite is a member of the humite group of minerals, which also includes humite, norbergite and chondrodite. Of the humite group, only chondrodite and clinohumite are known to produce gemstone quality deposits. The humite group of minerals was named after Sir Abraham Hume (1749-1838). Hume was a very well-respected English mineralogist, as well as a renowned collector of fine art.Clinohumite was first discovered in 1876. Until recently, it was thought to be one of the ten rarest gemstones in the world, with only a few thousand carats worth of gemstones known to exist in private collections. The first specimens of clinohumite were discovered in limestone blocks that had erupted from Mount Vesuvius near Naples, Italy. Later, more deposits of clinohumite were discovered in the Pamir Mountains during the early 1980s, and in the early 2000s, another deposit was found in the Taymyr Peninsula in the Far North of Russia. The most recent find was discovered in the Mahenge Plateau in the Ulanga District of the Morogoro Region of Tanzania, Africa in 2005.
Identifying Clinohumite
Clinohumite is a magnesium silicate with a color reminiscent of spessartite and hessonite garnet, but garnet is harder than clinohumite, which can help to distinguish between these minerals. Also, since clinohumite is extremely rare and limited only to a few specific regions of the world, in most cases, the mining origin can often help with identification. Gemologically, clinohumite has a hardness of 6 on the Mohs scale; a specific gravity (density) ranging from 3.2 to 3.4, similar to that of diopside; and a refractive index ranging from 1.631 to 1.668, between that of apatite and peridot. Its crystals are monoclinic, usually granular or prismatic in structure, and crystal lamellar twinning is common, which can result in a highly variable habits. Clinohumite’s distinct basal cleavage can often help identify it from other similar gems and minerals.
(IGC) WE OFFER TOP QUALITY NATURAL GOODS , THAT IS BEST QUALITY CUT AND POLISH PIECE FOR AUCTION MAKE YOUR OWN BID TO WIN VERY BEAUTIFUL QUALITY GOODS.
BUYER MUST PAY BETWENN 2 DAYS OF AUCTION END OTHERWISE ORDER WILL BE CANCEL
- AIRMAIL RAGISTERED SHIPPING 5$ 7-21 DAYS
- DHL EXPRESS/FEDEX SHIPPING 25$ 3-4 DAYS
- STRANDARD EXPRESS SHIPPING 8$ 5 TO 12 DAYS
- CHECK OUT OUR MORE ITEMS IN OUT STORE THERE YOU CAN GET MANY BEAUTIFUL GEMSTONES , BEADS AND JEWELRY ALSO MINERALS SPECIMENS
- IF YOU HAVE ANY PROBLEM WITH RECEIVE ITEM PLEASE DO NOT PUT NEGATIVE FEEDBACK WE ARE WELCOME TO SOLVE ALL YOUR PROBLEMS REFUND , RE-POLISH , RETURN , EXCHANGE ALL ACCEPTED , WE WILL NEVER LET YOU UPSET FROM US IN SHA ALLAH
- WE ACCEPT PAYPAL ONLY PAYPAL
| Fornitore di spedizioni | Spedizione a Thailand | Spedizione nel resto del mondo |
|---|---|---|
| FedEx | $50.00 / 2 giorni | $50.00 / 4 giorni |
|
Thailand
FedEx è scontato a $50.00 sugli ordini con 2 o più articoli
Resto del mondo
FedEx è scontato a $55.00 sugli ordini con 2 o più articoli
|
||
| Express Shipping | $11.00 / 10 giorni | $11.00 / 10 giorni |
|
Thailand
Express Shipping è scontato a $33.00 sugli ordini con 3 o più articoli
Resto del mondo
Express Shipping è scontato a $33.00 sugli ordini con 3 o più articoli
|
||
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