Prized Western Australian Chrysoprase Natural Dark Green Tumbling or Cabbing Rough - 540 carats (4 oz) 112 grams. Gem Quality. Your 4 oz Bag of Genuine Natural Chrysoprase will look similar to the above shown images. Each unique 4 oz Bag averages 2-4 chunky Individual Pieces (depending on weight) that average in size 1" to 1 3/4". Some bags may only hold 1 larger stone.112 grams total. We import direct From a Western Australian miner. Chrysoprase, is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel. Its color is normally apple-green, but varies to deep green.Chrysoprase is cryptocrystalline, which means that it is composed of crystals so fine that they cannot be seen as distinct particles under normal magnification. This sets it apart from rock crystal, amethyst, citrine, and the other varieties of crystalline quartz. Other members of the cryptocrystalline silica family include agate, carnelian, and onyx. Unlike many non-transparent silica minerals, it is the color of chrysoprase, rather than any pattern of markings, that makes it desirable. The word chrysoprase comes from the Greek χρυσός chrysos meaning 'gold' and πράσινον prasinon, meaning 'green'. !WARNING! Choking hazard-adult supervision suggested.