What’s a Merelani Mint garnet? It’s basically a light green grossular garnet, not dark enough green to be called a Tsavorite. The coloring comes from vanadium. The name comes from the Merelani region of Tanzania, although those light green garnets are also found in nearby Kenya. Grossular garnet has a relatively high refractive index which helps the gems achieve a high level of brilliance.
This gem is cut in a classic square cushion design. Its an extremely brilliant design that shows a great deal of scintillation and some dispersion. The gem measures 6.5 x 5.0 mm mm and weighs 1.67 carats. The color of this garnet shifts with the lighting, from a light to medium mint green in daylight to more pure intense apple green under fluorescent lighting. No matter what type of light it has an almost neon glow to it. The gem is eye clean, although it does have some tiny inclusions typical of this material–the macro images here are similar to the view through a 10x loupe.