Molten silver is poured into the cavity and allowed to solidify. Sand, mixed with a binder to hold it together, is pressed around a wooden pattern that leaves a cavity in the sand. Wax or plastic replicas of the parts are molded in accurate metal molds. Top of the line casting equipments are utilized to produce the silver jewellery. When the whole mold is heated, the replica melts, leaving behind a cavity into which silver is poured.

A carat measures fine gemstones and the weight of diamonds. Each has its own unique brilliance. Larger diamonds, such as those on diamond engagement rings, will usually carry a greater weight in carats than smaller stones, such as those found in diamond tennis bracelets. Look for diamond fine jewelry in which the diamond itself has a carat weight. Diamonds may be round brilliant, oval, tiffany, marquise, pear-shaped, heart-shaped, cushion cut , emerald cut, trilliant, radiant, or princess cut. Make sure the diamond is not cubic zirconium.

Gemstone is durable enough to be enjoyed for generations. However certain rocks, such as lapis-lazuli and organic materials are not minerals, but are still used for jewelry, and are therefore often considered to be gemstones as well. Most gemstones are hard, but some soft minerals are used in jewelry because of their luster or other physical properties that have aesthetic value. Rarity is another characteristic that lends value to a gemstone.

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