Sterling Silver Marcasite Created / Simulated Gem
Sterling SilverSterling silver, also called fine silver, is a beautifully lustrous cool-toned precious metal favored in fine jewelry among other products. The most reflective of all metals (excluding mercury), sterling silver looks stunning by itself and brings out the best hues in an array of colorful gemstones.
Sterling silver can be polished to a higher sheen than platinum. In fact, Ag, the chemical symbol for silver, comes from a word that means “white and shining.” The surface of silver can boast that shiny, polished appearance, or can be brushed, satin, matte, sandblasted, antiqued or oxidized (chemically blackened).
In order to be called sterling silver, a metal must be made up of a minimum of 92.5% pure silver and 7.5% alloy (meaning other metals), including but not limited to copper and nickel. The alloy is added to pure silver to make the metal more durable, tougher and harder. Sterling silver is designated a fineness of “925.” Pieces with sterling silver may be marked “sterling.”
Finishes on Sterling Silver
Finishing, or plating, is a common treatment with sterling silver. Popular types of plating are rhodium plating, gold plating and anti-tarnish plating. Plating is used to extend the life and sheen of the jewelry. After sizing or buffing a piece of jewelry with a machine, it must be re-plated to restore the finish.
Rhodium Plating: Rhodium plating is a complex and laborious process that enhances the luster and beauty and extends the life of silver. A member of the platinum metal group, rhodium is often used as a finishing touch on silver jewelry. It's a shiny silvery metal with a very white and reflective appearance, much like mercury. It's also very hard, so it withstands much wear and tear, resists natural tarnishing and wonderfully mimics the brilliant finish of freshly polished silver.
Caring for Sterling Silver
Sterling silver becomes tarnished as the result of a natural chemical process that occurs when sterling silver is exposed to chemicals in the air, rubber, wool and latex. Humidity also plays a role in accelerating tarnishing. It's easy to keep your sterling silver sparkling, though, by taking a few steps to prevent tarnish and other wear and tear.
Avoid exposing sterling silver to direct sunlight and harsh chemicals, including chlorine, ammonia, hair products, perfumes, cosmetics, perspiration and strong jewelry cleaning solutions.
Periodically wash sterling silver with mild dish soap and warm water. Rinse well and dry completely with a soft cloth before storing because moisture can cause tarnish.
Lightly polish sterling silver frequently with a soft silver-polishing cloth, avoiding abrasive cloths completely.
Tarnish is easy to remove when it first forms as a yellowish tint, but becomes more difficult to remove when it becomes brown and black. Remove tarnish with a silver polish cream, avoiding immersing pieces with gemstones in tarnish-removal solutions.
Minimize scratches on sterling silver by storing it in its own compartment in your jewelry box or in a cloth pouch. Sterling silver may also be stored in sealed polyethylene bags.
Marcasite, a name derived from the Arabic word for pyrite, is the term applied to small polished and faceted stones inlayed in sterling silver. Their color is usually described is being pale bronze, looking rather gray with a greenish tint. A multi-colored tarnish may exist as a result of oxidation. With a metallic luster and opaque crystals, marcasite ranks 6.0-6.5 on the Mohs Scale. Occurrences are worldwide, especially in the United States, Mexico, France, Peru, China and Russia.
Created/Simulated Stones: How are created or simulated gemstones different from natural gemstones? Natural gemstones are created by the forces of nature and must be discovered, usually by digging in the ground or sifting through a riverbed. Most of these natural gemstones can also be created in a laboratory; they are called created or simulated gemstones. They can be physically—in mineral and chemical contents—identical to their naturally occurring counterparts.
The purpose of creating gemstones in a laboratory isn’t necessarily to reduce the costs, but rather to produce larger, more perfectly formed stones. Because even lab-created diamonds can be very expensive, there are some diamond alternatives on the market that are commonly used to give jewelry the look of authentic diamonds, but which are much less costly. Cubic zirconia and Signity Star® are examples of lab-created gemstones that, to the unaided eye, look identical to natural diamonds.
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