Specimen #2451

Name: Oligoclase

Type: Gem

Locality: Tanzania

Favorite? N

Fluorescent? N

Size: 5.78 mm

Weight: 0.82 ct

Acquired: 2012-07-12

Source: Arkenstone Auction

Label: N

Comment: This rare Feldspar species is not often seen in gems from any locality. It is only found in a few places in the world as clean stones. This gem is virtually eye clean, and has quite a bit of "life" to it for a smaller stone. It has a nice "Square Brilliant" cut, and actually has a very slight greenish overtone. This is confirmed Oligoclase, and not Anorthite or Orthoclase. This is the real deal, so don't miss out.

Minerals: Oligoclase ((Na,Ca)(Si,Al)₄O₈)

There is one picture on file

M02451-01.jpg:

Oligoclase, Tanzania - FOV: 6.1 x 9.1 mm - 0.82 cts - 41 stacked images