Phenakite contains the rare element beryllium. A few of these rare gemstones have been found to contain as inclusions another rarity, a recently discovered mineral, perettiite-(Y). This 0.64-ct, rectangular step-cut phenakite contains needle-like inclusions of this mineral. © The Gem Trader. Used with permission.
Article: Uncommon Elements Make Uncommon Gemstones
Credit: The Gem Trader
|Natural or man made||Natural|