"Mandarin garnet" specimens are the most in demand and the most expensive. Spessartine gem quality stones are rarely larger than 5 to 7 carats in weight. The mineral is also found in Africa, India, ...

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Although both are "made, not mined," moissanite gemstones and lab-grown diamonds are NOT one in the same. Here are some of the key differences between these two natural diamond alternatives.

Emerald, which is a gemstone almost 20 times rarer than diamonds, came in fourth place in Massachusetts, with a total of 175,145 monthly U.S. searches.

Sophia Hirsh of Hirsh London gives expert advice on investing in colour gemstones and reveals some lesser known winners.

In fact, these diamonds are so rare that a single mine in Australia has been the source of almost 90 percent of the colored gemstones sold worldwide. How these rare diamonds came to be has always ...

In 2016, jeweler Olivia Young of Ouroboros sold a red spinel ring for £6,000 ($7,700). Last year, the client’s insurance company paid out £30,000 ($38,400) to replace it. Experts say that this ...

Though people are increasingly turning to lab-grown diamonds, because they’re supposedly more sustainable than the mined alternative, 75% of customers shopping for colored gemstones still prefer ...