PARCEL 3 CABOCHON L LABRADORITE100.4 CARATS RT908

Item Information

Dimensions (mm) 33 x 19 x 7mm
Weight (carats) not provided
Colors
Certified Gemstone

PARCEL 3  NATURAL LABRADORITE

SOURCE MAGDAGASCAR

GOOD CABOCHON

SIZE L33 X19X 7  MM

 

 

Labradorite ((Ca,Na)(Al,Si)4O8), is a feldspar mineral, an intermediate to calcic member of the plagioclase series. It is usually defined as having "%An" (anorthite) between 50 and 70. The specific gravity of Labradorite gemstones ranges from 2.71 to 2.74. The refractive index ranges from 1.555 to 1.575.

Twinning is common in Labradorite. As with all plagioclase members, its crystal system is triclinic. Three directions of cleavage are present, two of which form nearly right-angle prisms. Labradorite occurs as clear, white to gray, blocky to lath-shaped grains. It's found in common mafic igneous rocks such as basalt and gabbro, as well as in anorthosites.Red Labradorite gemstones is also called Oregon sunstone. Red Labradorite Andesine is a member of the Feldspar group. Andesine is a rich Red.  Red Labradorite - Andesine, has a hardness of 6 to 6.5 on the Mohs scale

The geological type area for natural Labradorite is Paul's Island, near the town of Nain in Labrador, Canada. It occurs in large crystal masses in anorthosite and shows an iridescence or play of colours. The iridescence is the result of light refracting within perthitic lamellar intergrowths resulting from phase exsolution on cooling.

10h 37m 42s

Buy Now $29.50
$
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 $30.00
Auction ID 268913
Watchers 1 watching
Viewed 486 times
Starts 3rd Dec 2016 7:02pm PST
Ends 4th Dec 2016 7:00pm PST

Shipping & Insurance

Provider Shipping Transit
FedEx $25.00 5 Days
Registered Shipping $15.00 10 Days
Standard Shipping $4.00 21 Days
Shipping Insurance all providers $7.00 (optional)

About Gem Traders

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