Epidote for cabochon cutting
We call it a massive crystal when the crystalization proces has not led to threedimensional loose crystal fans but crystals are kind of imprinted on a epidote rock.
Well developed crystals of epidote are crystallizing in the monoclinic system and are of frequent occurrence: they are commonly prismatic in habit, the direction of elongation being perpendicular to the single plane of symmetry. The faces are often deeply striated and crystals are often twinned.
Many of the characters of the mineral vary with the amount of iron present for instance, the color, the optical constants, and the specific gravity. The color is green, grey, brown or nearly black, but usually a characteristic shade of yellowish-green or pistachio-green.
Epidote displays strong pleochroism (or iridiscense), means their optical properties vary with the direction of light. The direction of the electric field determines the polarization of light, and crystals will respond in different ways if this angle is changed.
This makes it a perfect material for cabochon cutting and producing some very beautiful jewelry. We are producing such cabochons and do sell massive crystals for gemcutters and lapidary companies.
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