Natural Jeremejevite, 3.12 Ct (01152) - Clean / RARE - Collectors

Item Information

Dimensions (mm) 9.44 x 7.07 x 5.21mm
Weight (carats) 3.12 carats
Colors
Certified Gemstone
No Treatment

Natural Jeremejevite, 3.12 Ct (01152) - Clean / RARE - Collectors

Jeremejevite is a rare aluminium borate mineral with variable fluoride and hydroxide ions. Its chemical formula is Al6B5O15(F,OH)3.

It was first described in 1883 for an occurrence on Mt. Soktui, Nerschinsk district, Adun-Chilon Mountains, Siberia. It was named after Russian mineralogist Pavel Vladimirovich Eremeev (Jeremejev, German) (1830–1899).

It occurs as a late hydrothermal phase in granitic pegmatites in association with albite, tourmaline, quartz and rarely gypsum. It has also been reported in the Pamir Mountains of Tajikistan, Namibia and the Eifel district, Germany.

InformationItem Specific Data
ITEM CODE01152
QUANTITY1
GEMSTONE VARIETYNatural Jeremejevite
TREATMENTNone
COLOURColourless
WEIGHT 3.12 Ct.
TRANSPARENCYTransparent
CLARITYVS ( Eye Clean with a Interesting In swirly inclusion)
SHAPE OR CUT Rectangular , with Trenched corners
MEASUREMENTS9.44 x 7.07 x 5.21 mm.
LUSTERVitreous / Good
REFRACTIVE INDEX1.653 - 1.1783 (DR- 0.130)
SPECIFIC GRAVITY3.28 (+/-, 0.1)
HARDNESS6.5 - 7.5 (ref. data)
COMPOSITIONRare aluminium borate mineral with variable fluoride and hydroxide ions
CERTIFICATEIncluded - EGL Memo
ORIGINUnknown

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11d 13h 25m 7s

$
Shipping $0.00
21 Days via Standard Shipping
5 bids placed so far
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19th Nov 2017 6:44am PST
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$1.00 kevkell12
18th Nov 2017 1:37pm PST
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Pricing & Details

Reserve has not been met

Bid Increment $1.00
Starting Bid $1.00
Auction ID 711479
Watchers 2 watching
Viewed 259 times
Starts 6th Dec 2017 10:25pm PST
Ends 27th Dec 2017 10:20pm PST

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