16.28 ct Green Tourmaline - Emerald Cut

At 16.28 carats, this tourmaline from Brazil carries its green color through an emerald cut, measuring 17.1 x 13.5 x 7.4 mm.

Tourmaline takes a wider range of color than almost any other gem species, because its crystal will accept so many different coloring elements. Brazil has been one of the most prolific colored-gemstone sources in the world for a century, and still turns up new material on a regular basis. It is heat-treated, a common and honest preparation across the colored-stone trade, disclosed on every listing.

Few stones reach this combination of size and quality, and fewer still come to market. We will tell you everything we know about it before you decide.