Gemstones

USI Gems presents a collection of natural gemstones from around the world. We will not display or sell any type of artificial, synthetic or simulated gemstone. Here is an online gemstone gallery for you. As gemstones are sold, they are replaced, and new gemstones are added frequently. If you are looking for something in particular, we take requests and do our best to provide them.
 

Alexandrite is the gemstone most noted for it's color changing abilities. Shades are greenish in natural light, and reddish to violet under artificial light. Alexandrite is extremely rare. Look out for alexandrite which is too clean, or at a price which seems too low, it's probably synthetic.

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Alexandrite

Aquamarine is a beautiful gemstone. From the light blue of the sky to the deep blue of the sea, aquamarines shine over an extraordinarily beautiful range of mainly light blue colors. The shades of aquamarine leaves the gemstone designer free to bring out the brilliance of the gem with fine grooves, notches, curves and edges.

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Aquamarine

Although Sapphire is found in a many colors, blue sapphire is the color most people think of when sapphire is mentioned. Very light to very dark shades of blue are available at USI Gems The more vivid colors (without being too dark) are the most valuable.

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Blue Sapphire

Beautiful green color of emerald is unique in the world of gemstones. Emerald's precious green color is caused by small amounts of chromium and enhanced by traces of iron. Unlike other beryls, emeralds often contain inclusions and other flaws. These flaws are not looked on as negative aspects for emerald like they would be for other gemstones.

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Emerald

Garnet gemstone is known as the stone for a successful business. It is believed that if a garnet  cure depression. Garnets can be used to make a person popular and have self-esteem when worn as jewelry. It helps protect one on trips. Garnets bring constancy to friendships. Garnets are also known for stimulating success in business.

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Garnet

For the thousand of years the ruby has been considered one the most valuable gem stone on earth. It has every thing a precious stone should have magnificent colors. Excellent hardness and outstanding brilliance in addition to that it is as extremely rare gemstone.

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Ruby

Spessartite

Tanzanite is a very extraordinary gemstone. It occurs in only one place world wide. It's blue surrounded by a fine girt of purple is a wonderful color. It has rapidly become one of the most coveted gemstone in the world.

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Tanzanite

Tourmaline are gems with as incomparable variety of colors. The reason according to an Egyptian legend is that the tourmaline on it's long wayfaring up from the center of the earth. Passed over a rainbow tourmaline traveled along a rainbow. And on it's way it collected all the colors of the rainbow So that is why it's presently referred to as the " Gemstone of the Rainbow."

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Tourmaline

The brilliance green tsavorite is young gemstone with a very long geological history. It is native country is Bush land along the border between Kenya and Tanzania.

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Tsavorite