Aquamarine Straight Drilled Tumbled Natural Crystals measure approximately 15x11mm to 25x15mm in size, have a dull luster due to the natural unfaceted state of the crystal, the gem bodies have a rough nugget-like surface produced from natural growth processes, the crystals have an opaque quality with heavy internal features, and their untreated color shows a greenish blue hue for an astonishing group of organic Aquamarine.