Gemstones Updates

Gemological Information Article

Collecting Gemstones

By Lee MacRae

The term gemology refers to the profession, science, and even art of evaluating and identifying gemstones from natural diamonds to loose gemstones. Many people take up gemology as a hobby. They become interested in collecting and evaluating items like loose gemstone or natural diamonds. A number of these hobbyists start to visit various locations close by to hunt for raw or rough gemstones. Some hobbyists will learn to cut or tumble the gemstones they find. If this hobby interest you read along as we show you the various aspects of gemstone collecting.

The first step in starting the hobby of collecting gemstones the intelligent way is by acquiring knowledge about them. By taking a look in your local bookstore you can find books on the subject that will make you an informed buyer.

First on your list to consider will be the color of the gemstone. You'll want the gemstone that is as close as possible to the pure colors of the spectrum. We are talking about violet, orange, yellow, green, blue, and red. In general terms, the prices of very dark are very pale precious and semi precious stones are lower in value.

The cut of your gemstone is one of the most important traits when you value gemstone. The stone has to be cut with precision to reflect the light properly. A gemstone with an improper cut will never be able to reflect light consistently. Tone, color saturation, and color hue will never look consistent.

A third consideration is the stone's clarity. This means the stones purity or the lack of internal inclusions, particles or spots inside the crystal. Without a doubt, zero flaws are hard to find and make your stones very valuable.

Next comes size and weight. All gemstones [except for pearls and corals] are priced by the carat. One carat is the equivalent of 0.2 grams You should know however that size and weight and gemstones are not the same. Density or specific gravity can very. Take a diamond that weighs 1.00 carats and you will see that a similar sized ruby or sapphire is 1.20 carats.

Collecting various gemstones can be a great hobby. And there are so many different types in gemstones you can collect. You could try collecting Malachite, Chalcedony (bloodstone) or Benitoite for example. The choice and beauty and variety is almost endless. And if you like a hands on hobby you can go gemstone hunting and find the raw materials instead of buying them. Take the example of the United States. In New York you can find Beryl, Brown Tourmaline, Rose Quartz as well as Fresh Water Pearl.

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The Star of India, at 563.35 carats, is the largest and most famous star
sapphire in the world. Formed some 2 billion years ago, it was discovered,
allegedly more than 300 years ago, in Sri Lanka, where excellent sapphires are
still to be found in deposits of sand and gravel left by ancient rivers.
Industrialist and financier J. P. Morgan presented the sapphire to the New York
Museum of Natural History in 1900. Today, the Star of India is one of the most
renowned objects in all of the Museum's collections.
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Very Good Grade diamonds: This grade also has high brilliance and scintillation,
but expect them to be a bit darker in the center or around the edges. In some
cases a diamond can have top brilliance and scintillation, but be down graded by
its pattern. The stone above has a splintery pattern that prevents it from being
graded excellent.
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Quartz that is formed of multigrained microcrystals, not just of one single crystal, is called chalcedony. The name is applied to many well-known varieties of gemstones. They are found in all 50 states and come in many colors and color combinations. Unlike quartz, chalcedony does not look clear and glassy but waxy and translucent. It refers specifically to translucent white, blue, pale grayish-blue, purple, pink, yellow, orange, red, or solid-colored chalcedony other than carnelian, sard, or Chrysoprase, which are naturally-colored chalcedony varieties. Most chalcedony used in jewelry, as with the stones used by James Avery, is color-enhanced for a more consistent color. It ranks 6.5 to 7 on the Mohs Scale of Hardness which means it is fairly durable to wear as jewelry.
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