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Definition
Although semiprecious stones are ranked below the gemstone category, they also belong to specific classes of gems. The cutting and polishing process used to enhance the gems are the same. However, if the commercial market does not consider the stones to be rare or fine, they are then categorized as semiprecious stones.
Categories
Garnet, amethyst, turquoise, lapis lazuli, moonstone and peridot are a few semiprecious stone categories. The less expensive semiprecious stones are then categorized and subdivided. These include malachite, chrysoprase, carnelian and agate. As the stones continue to be polished and cut, tumblestones are created. These are readily available at retail new age shops.
Luster
Once the semiprecious stones are polished, a specific luster appears. For example, jasper, turquoise and carnelian have a waxy luster surface. Serpentine and peridot have a greasy surface. Opal and dolomite have a pearly surface.
Color
The locality of the rocks add to the intensity of the color. For example, turquoise, which can be sky blue, blue-green or greenish gray is found in parts of the world such as the United States, Australia, Chile, China and Mexico as well as France, England and Germany. The outdoor elements contribute to the color shades produced within the stones.
Jewelry Design
Pendants, bracelets, rings, brooches, belt buckles and earrings are a few jewelry pieces created with semiprecious stones. Jewelry designers mix the semiprecious stones with decorative spacers as well as connectors. Exotic looking pieces are created at a relatively inexpensive price in comparison to precious jewelry designs offered to consumers.