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| What is a Carat? |
Although we think of carat as a size, carat is actually a measure of weight-two hundred milligrams to be exact. Most jewelers refer to one carat as 100 "points." This means that a 75-point diamond would be three-quarter carat or 0.75ct. The reason we think of carat as a size, rather than a weight, is that two diamonds of the same weight and cut will generally look to be about the same size. This is not the case, however, when comparing carat weight between diamonds and other gems. For example, emerald is less dense than diamond. So if you were to compare a 1.0-carat round emerald with a 1.0-carat brilliant cut diamond, the emerald would be larger - just as a pound of feathers would be much larger than a pound of lead. For more information about loose gemstones, visit our store to speak with our expertise.
Codes inside my wife's ring!
I was once asked by a fellow that his wife had a diamond ring that she got as a present many years ago. He wanted to know more about it, what it is worth and etc...
He said, "On the inner side of the band there are two numbers engraved which I suppose indicate something about the diamond as well as the band, but I don't know what."
It says 090 on one side. The other engraving is not as readable but I think it says T100.
He wanted to know, if I could tell him what those numbers meant.
So, my respond was if you really want to know what it is worth, bring it to our store since we are the independent jeweler in your town. If the ring is of any great value (over $1000), you should have it appraised for insurance purposes.
As for the markings, without physically being able to measure the stone I could not say for sure, but the 090 might indicate that the ring contains 0.90 carats of diamonds. The markings may also refer to the lot number the ring came from, the style number of the casting, the manufacturer's trademark or any number of other things.
Generally the inside of a ring is stamped with an indication of the type of metal the ring is made from in either European (950, 925, 900, 750, 525, 416 register, English register (Plat, SS, PD, 18k, 14k, 10k) or some combination of the two. Perhaps what you thought was T100 is actually one of the above. |
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