From the world's richest deposit of bismuth, this extremely heavy specimen has mirror bright, metallic silver crystals of the element bismuth. Some are full crystals, I believe, parted along contact planes; although many are partial crystals or fragments, but the piece is extremely rich overall with crystals, to 2 cm in length. The luster is blinding, like metal out of a fabricator. The weight is really shocking...bismuth is HEAVY stuff! This little rock masses over 800 grams, about 2 pounds! There is a hint of iridescence and the faintest hint of lavender.