Carat (English:Carat) as a unit to measure the level of weight gemstones such as ruby, topaz, diamond, zircon, garnet, etc., which is a unit of measurement used widely all over the world. And was set to use as a unit in the international gem weights and measures used in the world.A unit of weight standard for the measurement of weight of gems. Which is compared to the metric system is 1 carat is equal to 0.2 g, or if the measurements at the purity of gold, the purity, 99.99% 24 carat
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