First discovered in 1902, gem-quality Grandidierite is extremely rare and is found only in Cap Andrahomana, Madagascar. Translucent specimens have also been found in New Zealand, Norway, and Suriname.

Spessartine gem quality stones are rarely larger than 5 ... It is composed of 27 jadeite beads. Painite is a dark red or brownish-orange red. Only three stones were known until 2001, and only ...

The value of kyawthuite is currently listed as priceless. The world's second-rarest gem, a mineral called painite, is valued at US$50,000 to $60,000 a carat. Oof. The world's only known piece of ...