inclusions

Colorless topaz with needle inclusions. Round brilliant cut, 3.78 cts, 9 mm, Myanmar. © The Gem Trader. Used with permission.

The wulfenites in this specimen contain inclusions that make one side of their crystal surfaces brown. The other sides are lustrous red. 8.3 x 7.3…

Round brilliant-cut demantoid with “horsetail” inclusions, 0.87 cts, 5.7 mm, Russia. © The Gem Trader. Used with permission.

This peridot, cut from a pallasite meteorite found in Indonesia, features some needle-like inclusions — crystals trapped within the gem —…

Russian demantoid with horsetail inclusions, 0.38 cts, 4.3 x 3 mm. Photo courtesy of liveauctioneers.com and Jasper52.

Brilliant, oval-cut demantoid with horsetail inclusions. 2.67 cts, 8.27 x 6.81 x 5.71 mm, Ural Mountains, Russia. © Rob Lavinsky, www.iRocks.com.…

Sometimes during a crystal’s formation, a new layer grows over a transparent crystal. When the growth of the original crystal resumes, it’s…

A haüyne crystal (2 mm) with a small gas bubble inclusion in its lower left area. (The pinkish crystals are nepheline; the matrix is augite). San…

Phenakite contains the rare element beryllium. A few of these rare gemstones have been found to contain as inclusions another rarity, a recently…