Factors Affecting Gemstone Carat Weight

Exclusive Summary About Gemstone Carat Weight By Allen Jesson

Gemstone Material

A 1 carat ruby is smaller than a 1 carat emerald. A gemstones denseness level can make it carry greater weight even though it has a smaller size than other gemstones with the same carat weight.

Gem Shape or Cut

The shape and cut can occasionally affect the carat weight.

Table Diameter

The table diameter is often considered important only for measuring or evaluating the brilliance of a given gemstone, but what few people realize is that it can affect the gemstones carat weight as well.

Girdle Thickness

Thick girdles not only reduce brilliance and light yield but negatively affect the gemstones color as well.

Crown Height

Acceptable crown height for gemstones is between 11.0 to 16.2% of the girdle diameter. Greater crown height often means greater carat weight.

Pavilion Bulge

The pavilion is the bottom portion of a faceted gemstone. Greater bulge usually means heavier carat weight.

Culet Size

This is the facet at a gemstones tip.

Finding the Right Carat For You

Exclusive Summary About Gemstone Right Carat By Dan Joines

Carat, in the jewelry industry, is the term used to measure a diamond's weight. When taking about smaller diamonds than weigh less than a carat, the measurement is often expressed in points, for a total of 100 points per carat. So a diamond that is .25 carat is equal to 25 points.

For example, a 2-carat diamond would fetch a heftier price than 2 1-carat diamonds of the same quality. This is why diamonds that pass the 1-carat mark are usually much more expensive, since gemstones of this carat are much more rare.

Calculating the price per carat is a great way to compare costs of similar diamonds.

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Hematite Magnetic Jewellery

Exclusive summary About Hematite Magnetic Jewellery By David Nivala

Hematite jewelry is no different in that when polished, hematite has a shiny look and is easy to work by the craftsman who make it.

Hematite is a mineral consisting of iron (III) oxide. Magnetic hematite is also available and has been turned into jewelry used for therapeutic purposes.

The benefits are said to be two fold:

1. Wearing fashionable magnetic jewelry allows non-invasive treatments to occurred without anyone knowing, and

2. The treatments can be easily transferred to other parts of the body.

Magnetic Therapy is considered safe for all except for:

1. Children under the age of seven

2. Pregnant Women

3. Individuals with pacemakers

4. Individuals with certain patches

5. When undergoing certain electronic tests

Hematite - Fashion Jewelry

The use of Hematite, for instance, in jewelry dates back to the ancient Egyptians. Red Ochre, the red colored clay is based on this same mineral.

Hematite (sometimes spelled Heamatite) is a mineral form of Iron(III) Oxide. Hematite is harder than pure iron but more brittle. High quality hematite is found in large quantities in England, Australia, Canada, Brazil and the Lake Superior region of the United States.

Hematite has two characteristics that make it ideal for the manufacture of jewelry. The quality of jewelry available varies greatly. Hematite jewelry is produced by many manufacturers throughout the world and the finished products does vary, due to the color variations.

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Spinel - Rare and Spectacular

Exclusive Summary About Spinel Gemstones By Nigel Makin

The Spinel Gemstone is the forgotten jewel of the Gemstone world, it is not a birthstone and it has no association as an anniversary gem. Spinel Gemstones are available in just about all colors but it is the Ruby-like red variety that is the most coveted and sought after. Synthetic Spinel has been made for nearly a hundred years; they imitate not just Spinel but Ruby also.

Types of Spinel.

Balas Spinel...This is a pale red variety of the Gemstone that has wrongly been called Balas Ruby in the past.

Hercynite...Is also a dark green to black member of the Spinel group,and again iron is its coloring agent.

Gahnite...Sometimes called Zinc Spinel, this variety comes in blue, violet or dark green to black.

Picotite...Also called Chrome Spinel this is the yellowish brown, dark green or black variety.

Many famous Gemstones that were thought to be Rubies, are actually Spinels. The "Black Prince's Ruby" in the English Crown and the "Timur Ruby" in a necklace in the English Crown Jewels are both Spinels.

The Wide World of Gemstones

Exclusive Summary About Spinel Gemstones By Ron Nash

Most people know the world of gemstones as comprised of precious gems and semi-precious gems. The precious gems include diamond, ruby, sapphire and emerald; and semi-precious gems includes the more common stones such as amethyst, topaz and garnet.

What's behind the growing interest in rare and exotic gems? Many of the lesser-known gems are relatively inexpensive. That makes them economically attractive for jewelry designers. The precious gems can always be found, but many semi-precious stones, such as demantoid garnet and alexandrite, are actually rarer than diamond or ruby.

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