A GRADE YELLOW PREHNITE CAB 67.4 CTS CG-1408

Item Information

Dimensions (mm) 41 x 24 x 10mm
Weight (carats) not provided
Colors

PREHNITE CABOCHON

BRIGHT LEMON YELLOW COLOUR

A GRADE HIGH CLARITY

PERFECT FOR SETTING IN JEWELRY

WEIGHT:67.4 CTS APPROX

SIZE: 41 X 24 X 10MM APPROX

Prehnite is a phyllosilicate of calcium and aluminium with the formula: Ca2Al(AlSi3O10)(OH)2. Limited Fe3+ substitutes for aluminium in the structure. Prehnite crystallizes in the orthorhombic crystal system and most oftens forms as stalactitic or botryoidal aggregates, with only just the crests of small crystals showing any faces, which are almost always curved or composite. Very rarely will it form distinct, well individualized crystals showing a square-like cross-section, like those found at the Jeffrey Mine in Asbestos, Quebec, Canada. It is brittle with an uneven fracture and a vitreous to pearly lustre. Its hardness is 6-6.5, its specific gravity is 2.80-2.90 and its color varies from light green to yellow, but also colorless, blue or white. In April 2000, a rare orange Prehnite was discovered at the famous Kalahari Manganese Fields in South Africa. It is mostly translucent, and rarely transparent.

1d 18h 48m 56s

Buy Now $35.00
$
Shipping $4.00
21 Days via Standard Shipping
0 bids placed so far
Add to Watch List Ask a Question * All prices in USD

Audit Information

The Gemstone Sheriff program allows our members to request an audit on any auction, which is completed by an independent gemologist who assesses the accuracy of the item description and pictures.

Request Audit

Pricing & Details

Bid Increment $1.00
Starting Bid $35.00
Auction ID 169648
Watchers 1 watching
Viewed 735 times
Starts 9th Dec 2016 3:02pm PST
Ends 12th Dec 2016 3:00pm PST

Shipping & Insurance

Provider Shipping Transit
Express Shipping $4.00 7 Days
FedEx $4.00 7 Days
Registered Shipping $4.00 21 Days
Standard Shipping $4.00 21 Days
Shipping Insurance all providers $20.00 (optional)

Hello! Gem Rock Auctions is a global marketplace offering beautiful gemstones from professional gemstone cutters, dealers & miners. Register for $10 off your first purchase.