Unheated & Unoiled
Most rubies and sapphires are heated and most emeralds are oiled. These pieces are recorded as untreated: unheated rubies and sapphires, and an unoiled emerald. Untreated stones are rarer and valued accordingly.
Most rubies and sapphires are heated and most emeralds are oiled. These pieces are recorded as untreated: unheated rubies and sapphires, and an unoiled emerald. Untreated stones are rarer and valued accordingly.
