45.60 CTS LABRADORITE STONE -WELL POLISHED [STS2084]

Item Information

Dimensions (mm) 29.8 x 20.7 x 9.7mm
Weight (carats) 45.6 carats

LABRADORITE

This is a natural untreated oval stones well polished and ready to be set or wire wrapped. This stone is directional so it loves to be moved in your hand.It is hard to capture the beauty of these stones and the back has been well polished to reflect the colour.


Labradorite  a feldspar mineral, is an intermediate to calcic member of the plagioclase series.. The streak is white, like most silicates. The refractive index ranges from 1.555 to 1.575. Twinning is common. As with all plagioclase members the crystal system is triclinic and three directions of cleavage are present two of which form nearly right angle prisms. It occurs as clear, white to gray, blocky to lath shaped grains in common mafic igneous rocks such as basalt and gabbro, as well as in anorthosites.

The geological type area for 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 colors. The iridescence is the result of light refracting within lamellar intergrowths resulting from phase exsolution on cooling in the Boggild miscibility gap.

Gemstone varieties of labradorite exhibiting a high degree of iridescence are called spectrolite; moonstone and sunstone are also commonly used terms, and high-quality samples with good iridescent qualities are desired for jewelry.

 

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$7 david01
$6 merlin268
$1 merlin268
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Pricing & Details

Bid Increment $1
Starting Bid $1
Auction ID 1378628
Watchers 3 watching
Viewed 58 times
Starts 27th Dec 2020 6:09pm PST
Ends 17th Jan 2021 6:09pm PST

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