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By Gavin Clarke
Reviewed By Andreas Zabczyk
Rare Garnets: Tsavorite, Spessartite and RhodoliteGarnet has historically been highly regarded for its very good hardness (7 to 7.5 on the Mohs scale) and great brilliance. The height of garnet popularity was undoubtedly during the 18th and 19th centuries in Europe, where Bohemian garnet jewelry was all the rage. Discover our extensive range of loose garnet gemstones for sale. ![]() Rhodolite, Tsavorite, Spessartite Garnet & Demantoid Garnets
Garnet is commonly seen as an affordable, dark-red gemstone, often with a noticeable brownish hue. While this description applies to many garnets, there are rarer varieties with breathtaking colors that are highly coveted by collectors. These exceptional garnets have sparked a significant resurgence in the market. Spessartite, the distinctive orange-red garnet, is colored by manganese and, in redder specimens, by iron as well. Found in Nigeria, Mozambique and Namibia, this garnet has been in good supply recently, a situation that experts warn is likely to be temporary. Many different grades of spessartite are currently available, with moderately included material selling for attractive prices. However, very clean mandarin orange spessartite is quite valuable, especially in large sizes. Discover our collection of loose spessartite garnet for sale. ![]() Pear-Shaped Spessartite Garnet Gems
Tsavorite, a rare grossular garnet, departs even further from the traditional red garnet. Tsavorite garnet is a recent discovery, found for the first time in the 1960s in the border area where Kenya and Tanzania meet. Fine tsavorites are an intense medium green color; a few resemble fine emeralds. Tsavorites may be moderately included, but the finest specimens are eye clean. Large tsavorites are quite rare; even stones weighing up to two carats are not abundant. Tsavorites range in color from light-green to very dark-green. Like so many colored gemstones, tsavorite garnet was popularized by Tiffany & Co., who started a special campaign in 1974 to promote it. The promotion only increased the rarity of this already scarce gem. At one time tsavorite was being mined from 40 different areas throughout Tanzania and Kenya. Today there are only four mining ventures that produce commercial quantities. View our selection of loose tsavorite garnet for sale. Rhodolite is a beautiful pink to violet-red garnet. Its name is derived from the Greek word, "rhodon", which means "rose colored". It was assigned its name by George Frederick Kunz after the mountain rhododendron of North Carolina, which has a similar color. By composition, rhodolite garnet falls somewhere between almandine and pyrope. It is not considered a specific garnet subgroup in itself, but describes garnets of the rose or pink rhododendron color. Top quality pink rhodolites are mined in Sri Lanka, Tanzania and Zimbabwe. Large gemstones are rare, but we are sometimes lucky enough to cut some very large rhodolite stones weighing over 10 carats from high quality Tanzanian rough. Discover our extensive range of loose rhodolite garnet for sale. ![]() Rhodolite Garnet Gemstone
In addition to spessartite, tsavorite and rhodolite, there are a few other rare garnets that we always look for, but rarely find. Demantoid garnet, a captivating green gemstone, possesses a unique charm. It exhibits a slightly yellow-brown hue, distinguishing it from tsavorite, yet its exceptional refractive indes and remarkable dispersion set it apart. This rare gem is exclusively found in Russia and Namibia, making it an extraordinary find. Another gemstone of great rarity is the color change garnet, a mesmerizing blend of spessartite and pyrope garnet. Its striking ability to transition from a vibrant blue to violet surpasses even the renowned alexandrite in intensity. Although we occasionally come across small quantities of these remarkable gems, they are always in high demand and quickly sell out.
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