This mineral, a hydrated aluminum phosphate, sometimes displays a particular inexperienced hue, starting from a pale, yellowish-green to a deep, emerald inexperienced. Its colour arises from the presence of chromium and vanadium inside its crystal construction. Typically present in lots or nodules with a cryptocrystalline or microcrystalline texture, it could actually additionally show a botryoidal or reniform behavior. A vitreous to waxy luster characterizes polished specimens, including to their visible enchantment.
The distinctive attributes of this enticing materials have led to its widespread use in lapidary work, notably for cabochons, beads, and carvings. Its relative softness, sometimes measuring between 4.5 and 5 on the Mohs hardness scale, makes it comparatively straightforward to work with, whereas its inherent magnificence lends itself to varied inventive purposes. Traditionally, it has been prized for its decorative worth, with archaeological proof suggesting its use in adornments by varied cultures all through historical past. Its inherent aesthetic qualities proceed to be appreciated in modern jewellery design.
