Friday, September 19, 2008

An exceptional Tsavorite. Flawless, absolutely top color grade

An exceptional 1.22ct tsavorite. Flawless, and absolutely top color grade. This is a classic Kenyan tsavorite from the Tsavo region - emerald green unlike the Tanzanian material which tends to be more yellow green.

Lots of brilliance and very well cut. See it at Multicolour.com!

Sunday, July 20, 2008

Tsavorite - Story of the Favorite Gemstone Jewelry

Discovered in 1967 by the now legendary Scottish geologist, Campbell R. Bridges, tsavorite has quickly found favor as a precious colored gemstone of choice. Its brilliant green colors have overcome its lack of romantic lore and ancient history. Native to the dry grasslands of the high-plateau frontier between Kenya and Tanzania, tsavorite first came to light in the famed tanzanite producing area of Lelatema. Discovered as small green crystal pieces and granules inside geode like formations, gemological tests showed that these stunningly beautiful crystals were in fact a variety of green grossular garnet.

Showing high transparency and beautiful green color, gem dealers and jewelers quickly displayed interest, but the problem was that tsavorite deposits were small, and Tanzanian laws at the time restricted mineral exports. Bridges and other reputed gem prospectors such as Peter Morgan and John Saul speculated that more tsavorite deposits would be found across the border in Kenya. With intuition and some luck paying off in 1971, Bridges rediscovered tsavorite for the second time within the boundary of Kenya’s fabulous Tsavo Game Reserve.

Prospecting around the same area of the Tsavo Reserve as Bridges, Peter Morgan went on to discover the first substantial tsavorite deposit in the Taita Hills. Straddling the prominent Kide Hill, the Lualenyi Mine produced the first commercial amounts of tsavorite. Under the more laissez-faire and unrestrictive laws of Kenya, mining and exporting commenced and the world began to receive its first taste of this beautifully colored gem.

Ever the creative opportunist with East African gems, Henry Platt of Tiffany & Co., New York, named the brilliant green gemstone "Tsavorite", after the beautiful savannah parklands where it was rediscovered. In 1974 at Platt’s behest, Tiffany’s started a marketing campaign that helped propel tsavorite to the fine jewellery favorite .

With beautiful green hues similar to the very best emeralds, the jewelry world was enamored by tsavorite’s charms. While some 50 deposits have been found in Kenya, Tanzania, Madagascar and even Zambia, only a handful of small mines produce commercially viable quantities. Production is highly unpredictable with large crystal sizes seldom being recovered – all helping to add to the gemstone’s cachet as a genuinely rare jewel.

Thursday, April 17, 2008

Cute Tsavorite Rabbit

Tsavorites are relatively hard so they polish well. Like all garnets, they are singly refractive and as a result can be especially brilliant. Suitable in any kind of jewelry tsavorites offer excellent value and utility at a price more affordable than emeralds, especially in smaller sizes. Clean stones over 10cts. in size are extremely rare and much more expensive, which makes this hand carved tsavorite rabbit must-have collectible item

Much of the recent productions has centered around Voi, Kenya but some tsavorite has also been found near Arusha, Tanzania in the block D tanzanite deposit near Meralani as well as occasional stones in the Tunduru gem gravels in southern Tanzania.

It is interesting to note that since the darker material is from Kenya and the lighter colors are from Tanzania, the Kenyans insist that only the darker stones should be called tsavorites.

Wednesday, March 5, 2008

What makes Tzavorite so desirable?

The color scale shown by tzavorite gemstones from pale green via intensely bluish green to deep green, – colors which have an invigorating and fresh effect on the senses. The gemstone is also coveted because of its high brilliance. Like all other garnets it enjoys an especially high light refraction index. Not without reason, then, did old legends claim that garnets where difficult to hide. Their sparkling light was reported to be visible even trough clothes.

Contrary to other gemstones, tzavorites are not heated or oiled. This is not necessary for this gemstone. Like all other garnets it is a piece of immaculate and pure nature. Another positive characteristic is its robustness. Although showing a hardness similar to emerald - it is far less sensitive in its handling. This is not only important for cutting and setting the stone, but also for wearing.

Tzavorite is less likely to become damaged or to splinter even as consequence of abrupt or incautious impact. It is excellently suited for the favoured style of "invisible setting", where stones are set closely joined, and which cannot be recommended for emeralds. Due to its high brilliance, tzavorite here is an equal match for the classical gemstones like diamond, ruby and sapphire.

Wednesday, June 20, 2007

Why is it called Tzavorite?

Naming gemstones is performed according to certain rules. Modern mineralogical nomenclature demands that gemstones are given a name ending in "ite". To honour the Tzavo National Game Park and the Tzavo river running through this area, Henry Platt , the former president of Tifany & Co, who accompanied the gemstones rise to popularity, had suggested the name Tzavorite. Sometimes, however, Tzavolith is used but both denote the same stone. The ending "lith” is simply the Greek word for "stone”.

Sunday, June 17, 2007

Tsavorite a is a valued collectors gemstone due to its rarity and its beauty

Tsavorite garnet was first discovered in Tanzania in 1968, and was named after Tsavo National Park. It is located near the border between Kenya and Tanzania. A member of the garnet group, the species is grossularite and the variety is tsavorite.

Tsavorite is said to be the most valued variety of this species. Although Tsavorite is the name usually associated with the darker green garnets, there is no universally accepted standard that designates which shade of green qualifies a stone as tsavorite.

Although the attractive green color of Tsavorite was initially thought to be associated with the presence of chromium, it is now known that vanadium causes the color and some stones contain no chromium at all.

Tsavorites are relatively hard so they polish well. Like all garnets, they are singly refractive and as a result can be especially brilliant. Suitable in any kind of gemstone jewelry, tsavorites offer excellent value and utility at a price more affordable than emeralds, especially in smaller sizes. Clean stones over 10cts. in size are extremely rare and much more expensive.

Tuesday, January 9, 2007

An exceptional gemstone, most likely the largest fine color clean tsavorite in the world was discovered near Arusha, Tanzania


The largest in the world tsavorite was found at the border of the original block B tanzanite mining area (Block B extension), at a depth of 160 meters. The area is locally known as Karo. The uncut stone weighed 185 grams and was examined by Dr. H. Hanni of SSEF Swiss Gemmological Institute during a recent trip to Arusha. The stone was preformed and facetted at the Multicolour Gems office in Chantaburi and certified by Dr. A. Peretti at the GRS Gemresearch Swisslab in Bangkok. The impressive size and saturated color combined with remarkable clarity and transparency put this stone in a class of its own. According to Dr. A. Peretti's report, -- "One Magnificent Gemstone".

Even tsavorites over 2 cts. in size are considered to be rare so an amazing stone like this will certainly end up with a collector or in a museum. The stone is step cut with good proportions and superior transparency and measures 42.11 x 36.46 x 28.34 mm. The GIA color was graded as G 4/5 - G 4/6 (medium tone, strong to vivid saturation) using the GIA 324 color comparison set. Although difficult to verify, our research indicates that at 325.13 carats, this stone is the probably the largest and definitely the largest clean tsavorite in the world. In a smaller size, material like this would be much lighter in color but in such a large size, the tone darkens to that illusive jello green that every connoisseur of tsavorite asks for -- not too light and not too dark.