Peridot (sometimes called chrysolite) is the gem-quality form of olivine, a silicate mineral with the formula (Mg, Fe)₂SiO₄. Its green color depends on the iron content within its structure. Peridot is typically found in silica-deficient rocks, such as volcanic basalt and pallasite meteorites. Ludwigite, a magnesium-iron borate mineral (Mg₂FeBO₅), typically occurs in magnesian iron skarn and other high-temperature contact metamorphic deposits. It is often associated with magnetite, forsterite, clinohumite, and borates like vonsenite and szaibelyite.

This particular specimen features a sharp, well-formed, double-terminated peridot crystal that is transparent, lustrous, and displays a rich lime-green color. Included within the crystal are acicular sprays of black ludwigite—a rare magnesium-iron borate—and magnetite. The peridot’s sharp termination and good size, combined with its transparency and striking green color, make it a highly dramatic piece in person. This is an exceptionally fine gem crystal for the species, with excellent color, superb termination, and added interest from the ludwigite inclusions.

Specifications

Mineral:
Peridot with Ludwigite Inclusions 

Miniature Size Mineral:
LWD: 3.6 x 2 x 2 cm

Weight: 14 grams 

Locality:
Supat Valley, Kohistan, Pakistan.