Dioptase with Calcite Gemstone Carvings They are considered to be

They are considered to be “living fossils” because of the great similarity between modern and fossil forms

Crystalline Gold is purchased not for its spot market value but for its rarity

Although most hair remains are orange in color

Quartz occurs in crystalline masses

it may very well have been that Neanderthal and Modern Man could have seen each other's camp fires between the Straight of Gibraltar

Dioptase with Calcite Gemstone Carvings They are considered to beDioptase crystals are emerald green and translucent. The mineral got its name from the Greek words for "to see" and "through" because of the ability to see internal cleavage planes of the small crystals. The mineral forms in rhombohedral crystals (usually less than 1cm in size) with a chemical composition of CuSiO3 (H2O).