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What is the weight of 10 carots total weight marquise cut loose opal lot Each opal measures approximately 4x2mm?
Wiki User
∙ 12y ago
The is one factor missing .... how many stones make up the 10 carat total ? without this , the question is nonsensical. Rod Keady
Actually, carat is a measure of weight already. It is the same as 200 milligrams. So 10 carats would be 2 grams.
That is not a lot. Opal has a specific gravity around 2, so that means it has twice the density of water. Two grams of water is about 2 cubic cm, so 2 grams of opal would be about 1 cubic cm volume. Since some opal has a specific gravity of up to 2.25 or so, the volume of opal could be as little as 0.88 cc.
That means, however, that you have quite a few of these small opals. Probably as many as 20 or 30 -- maybe more. Since they were cut, you really only have a small slice of opal in each cut, topped by a cabochon of crystal quartz. The specific gravity of quartz is higher than that of opal, which probably reduces how many stones you have, but still, you should have quite nice number of them. 4mm x 2mm is the perfect size to set in a ring or in earrings.
Raymond Griffith
Wiki User
∙ 12y ago
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