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.

Each link or bond is the same length, and the tetrahedral formation is therefore completely regular. Theoretically a perfect diamond crystal could be composed of one giant molecule of carbon. After the magma cooled, it solidified into kimberlite, where the precious rough diamond is still found today. It is the strength and regularity of this bonding which makes diamond very hard, non-volatile and resistant to chemical attack.

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