Chrysoprase is a gemstone variety of chalcedony or cryptocrystalline quartz, colored by trace amounts of nickel. Its color varies from apple-green to deep green.
Greek chrysos = golden or yellow plus prason = leek alluding to green color.
QUARTZ:
Quartz appears to be from the German “Quarz” but that word’s origin is not known. The name quartz possibly comes from a Saxon word meaning cross vein ore, while some it is instead derived from the Slavic word kwardy (hard). The Greeks had originally named Quartz, Krystallos, the word for ice, but this soon came to mean any crystal. The gem varieties of quartz have been used as gemstones and other ornamental objects for thousands of years.
OPAL
More than any other gem, each opal is unique. No other stone has as rich and varied a folklore. Opals are also the most delicate gems commonly worn.
Opal has derived its name from the Sanskrit word 'upala'. But there is a confusion about it, since another school of gemologists claim that the opal stone derives its name from the Latin word, 'Opalus'. Among the Romans, it is generally referred to as 'Cupid Paedros' meaning a beautiful child that signifies love.
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