Tobin is proud to offer a wide range of the finest gold, silver, and platinum jewelry. From classic gold necklaces to sophisticated platinum rings, we are dedicated to helping you find the perfect piece. We invite you to visit our showroom and see the breathtaking quality and diversity of our precious metal collection.
Yellow Gold vs. White Gold vs. Platinum
Pure, solid gold is 24 karats (24K). Because pure gold is soft, it is typically mixed with stronger alloy metals to make it more durable. The higher the proportion of gold, the higher the karat value. The number of karats identifies the exact proportion of gold to alloy metal; for instance, fourteen karat (14K) gold is comprised of 14 parts gold mixed with 10 parts of an alloy metal. While most jewelry is marked with a karat quality, it is not required by law. Below the karat quality, you should find the name or the U.S. registered trademark of the company that stands behind the karat quality.
Both yellow and white gold are measured by the percentage of gold within the piece. For instance, both 18 karat white gold and 18 karat yellow gold contain 75% percent pure gold. The only difference is the proportion of other metals in the alloy mix. Yellow gold is pure gold mixed with alloy metals like copper and zinc, while white gold is an alloy containing pure gold and white metals like silver and palladium. White gold also has a thin coating of rhodium, a bright platinum metal.
Platinum is a rare metal that is valued higher than gold. In jewelry, it is typically mixed with other precious metals called “platinum group metals.” These metals include iridium, palladium, ruthenium, rhodium and osmium. Unlike gold jewelry, platinum is marked by a unit based on parts per thousand. For instance, the marking 800 Platinum (800 Pt) indicates that the piece is 80% platinum and 20% other platinum group metals.