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

Found only in the Mererani Hills of Tanzania, this gemstone is a thousand times rarer than diamonds. Tanzanite captivates with its striking blue-violet hue, a colour so deep and unique that it has ...

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 ...

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.

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.

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 ...

Cubic zirconia are denser and heavier than diamonds of the same size. For example, a 6.5-mm diamond is about 1 carat, while a 6.5-mm cubic zirconia is about 1.7 carats.

By Sarah Royce-Greensill, CNN (CNN) — In 2016, jeweler Olivia Young of Ouroboros sold a red spinel ring for £6,000 ($7,700). Last year, the client’s ...