Spessartine is one of the more beautiful Garnets out there, especially because it occurs in larger stones. The material is only found from a handful of localities in top gem quality material. This particular stone is from East Africa (probably Tanzania) and has a very attractive, deep red color. The gem has a "Cushion" cut and is virtually eye clean. The color is really superb in this stone, and these gems are rarely found over 4 carats in any quantity. This gem would make a superb addition to any Garnet collection.
crystals, i.e., Colorado, Russia and Brazil predominantly. Recently there was a limited find of what is some of the most exciting new Amazonite on the market. This material yielded crude crystals for the most part, but the color was superb, and many of them were translucent, which is uncommon in Amazonite. This particular stone is a beautiful blue-green color, translucent "Oval" cut gem. This stone would make a great addition to a Feldspar suite, or even an Amazonite gem collection.
The deposits around Ouro Preto have produced what are some of the most colorful and widely recognized natural color Topaz in the world. The color of these gems earned them the name "Imperial", and is oft deserved. The majority of these gems occur in a rich orange color, but they also occur in pink and purple hues as well. This gem is a very attractive Imperial Topaz with a beautiful natural light pink shade. This color is not common to these gems. The stone has a "Cushion" cut and is virtually eye clean. These gems are becoming harder and harder to obtain since so much of the material never reaches the open market.
Zircon occurs in a wide range of colors, and this particular stone has an appealing greenish-golden hue. The stone is very slightly included, and the color is excellent, especially in a stone this size. The stone has a standard "Step Oval" cut which is typical for most Zircons you see. These gems have been coming out of Sri Lanka for many years now, and they are still so diverse in color that one can assemble a great collection displaying all the colors of Sri Lankan Zircons.
Spessartine occurs in all shades of red and orange, and this particular stone is a nice blending of the two shades. This stone has an "Oval" cut and is only very very very slightly included with great saturation of color. I've only seen a handful of these stones from this dangerous area on the Indian/Pakistani border, and this is one of the finest quality gems of the material that I have encountered.
This rare oxide is almost never seen in cut stones, and for any rare stone collector I can't imagine that you'd want to pass up this chance to add a very rare cut stone like this to your collection. The stone itself it opaque, but it’s a very hard to find gem of a rare species that is not often faceted. This stone would fit in very well amongst a black” stone collection. It might be small, but you'd be hard pressed to find another one. Most rare gem dealers don't even have a piece of this material to cut let alone to offer for sale in the finished product. This is one of the very few facetted Bixbyite stones that I've seen. A nice gem for a good price that will allow you cross one off your checklist of rare stones.
Last but not least is one of the most classic gem grade Feldspars in the world. These Orthoclase gems and crystals have been around for some time. The locality in Madagascar for this material is actually an old Dana locality. The stone is a very pleasing yellow color with a Cushion cut. This stone is from a very old stash of gem rough, and is only very very slightly included. Gem quality Feldspars are not common, especially in stones over 12 carats like this!
Perhaps the most famous and valuable of the color change” gems is Alexandrite. This gem was named after the Russian Czar Alexander II as the stone was originally discovered on his birthday. To this day, the finest Alexandrite gems are still found in Russia, though not in great quantity. The defining characteristic of a top Alexandrite gem is the strength and degree of which the stone changes color. Superb gem will exhibit a strong blue-green color in daylight and a plum-purple-red in incandescent light. This slightly included, Oval” cut gemstone shows nearly 100% color change, and is gorgeous in person. This is good sized stone by Alexandrite standards, as gems over 5 carats are considered to be quite large.
Pollucite is a very rare Cesium bearing Zeolite mineral, and one of the very few facettable Zeolites in the world. Cut stones are extremely rare, and are highly sought after by collectors. Strangely, this Zeolite is most often found in granitic pegmatites as opposed to Igneous deposits like most Zeolites. In recent years, some great gem quality Pollucites have been coming out of Afghanistan, and it really did a lot to help bolster the supply of gem Pollucites in the world. This gem is a remarkable, very slightly included, colorless stone with a Pear cut. This material is prized for its rarity, and all great rare stone collections need to have a good Pollucite in them.
The color in this stone is really unique. It's somewhere between a light colored Emerald and a darker colored Aquamarine. The stone is a good mix of blue and green, and somewhat reminds me of the color seen in the Copper-bearing Tourmalines from Nigeria. Almost all Beryl contains some kind of a chromaphore that causes the different color (i.e., iron, chromium, manganese etc) but you rarely see Beryls that carry a trace of Vanadium. Honestly, I have only seen a few of these stones over the years, and they're always small, but the color is really pleasing. This stone is virtually eye clean with a Rectangle cut. A great stone for Beryl collectors.
Another wonderful rare gem! Nambulite is a Manganese silicate that is only found in a few world localities, the most famous being the Kombat mine near Tsumeb. This material is almost never seen in cut stones, and the best crystals came out of the ground long ago, never to be mined again. All of the best cut stones are buried away in collections now. This material has a distinctive orange-red or pinkish-red color and most collectors do not have a cut Nambulite in their collections. Now this stone is translucent, not true gem quality, but you rarely see these gems available for purchase, so I think that scarcity of this stone makes up for the fact that it isn't as gemmy as some would like. The stone has a Round cut and I’m sure it will find a home in somebody’s rare stone collection.
Natrolite is one of the very few facetable Zeolites in the world. This stone is from the recent collecting at Bound Brook, New Jersey. This gem is an exceptionally rare, virtually eye clean, hard to find, "collector's" stone. The fact that the stone is so clean makes it pretty special. The cut on this stone is a Oval cut. If you're a serious gem collector, you need one of these in your collection, especially if you like to collect gems from North America, or simply from the United States.
Gaspéite is a somewhat rare carbonate named after the Gaspe Peninsula in Canada. The material is virtually always opaque, and is this is one of the few faceted stones of this material that I've seen. The color of Gaspéite is a very attractive light green, and this stone is no exception. The gem is opaque with an Elongated Cushion cut, but for rare stone collectors, this would make a great addition to any rare stone collection, especially considering that it’s a colorful stone.
This is a wonderful Chrysoberyl "Cat's eye" gem. This stone exhibits a fine green-yellow color. The "eye" in the stone has a great "milk" appearance, creating that highly sought after "milk and honey" effect that is often seen in these gems. There is also a slight golden flash on the perimeter of the stone as well. This stone is one of better and more attractive "Cat's eyes" that I've offered in recent years. I want to point out that this stone is incredibly bright and does not look "dirty" like so many others can be.
Ussingite is a colorful member of the Sodalite group usually showing a light pink or violet hue. It was named after Niels Viggo Ussing who was a professor of mineralogy at University of Copenhagen. Most Ussingite, despite the pretty color, is translucent at best, but I've only seen a few facetted stones of this material, and it is extremely rare. This stone is amazingly translucent and has a pleasing purplish-pink color with a standard Marquise cut. Another great rare gem to add to your collection.
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