10465.00 CTS PURPLE&GOLD LABRADORITE SPECIMEN -MADAGASCAR [STS2065]

Item Information

Dimensions (mm) 195 x 110 x 57mm
Weight (carats) 10465 carats
Colors
Type
  • Specimen
LABRADORITE PURPLE
Mined at Fort Dauphin Madagascar -Africa 
A  purple&gold tone  in this specimen is very unique. This specimen does have a play of other colours. 
well polished.

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 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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$1,450 bassetpet
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Pricing & Details

Bid Increment $1
Starting Bid $1,500
Auction ID 1363752
Watchers 3 watching
Viewed 844 times
Starts 21st Sep 2022 3:25pm PDT
Ends 24th Sep 2022 9:46pm PDT

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