Platinum Jewelry

Rarer than Gold

Platinum, white in color, is a highly desirable metal and rarer than gold. It is a common choice for engagement rings and wedding bands due to its purity, durability, beauty and finish.

Purity of Platinum

Platinum is the purest of the precious metals. People who are sensitive to other precious metals usually do not have reactions to platinum because of its purity. Each piece of platinum jewelry at Sidney Thomas is stamped to indicate the percentage of platinum. Pt1000 is pure platinum, while Pt900 is 90 percent platinum or 900 parts per thousand. Any jewelry with at least 95 percent platinum will be stamped with "Platinum" or "Plat."

Platinum Jewelry

Durability of Platinum

Platinum is heavier and stronger than the other precious metals. It is more malleable as well. These two qualities make it a good choice for securing a diamond or precious gemstone. Platinum makes an exceptional choice for heirloom jewelry that will be passed down generation to generation.


Platinum is adored by many because the precious metal gets better with age. No mass is lost when platinum is scratched and over time it develops a patina sheen, which has a satiny vintage look. Although a patina finish is desired by most, platinum's original shine can be restored by polishing it with a soft cloth.

Platinum Jewelry Care

Although chemicals do not affect platinum the way they do other precious metals, care is still recommended, especially when platinum is set with diamonds and other precious gemstones. Clean your platinum jewelry with a mild soap, warm water and a soft-bristled brush. We recommend storing your platinum jewelry in its Sidney Thomas presentation box.

Sidney Thomas Platinum Collection

Platinum's unmatched strength and classic color make it a perfect choice for an engagement ring or wedding band from the Sidney Thomas collection.

A Brief History of Platinum

Ancient Egyptian artifacts consisting of platinum suggest that the metal was used thousands of years ago. Although, when it was discovered by Spaniards in Ecuador in 1590 it was disregarded as an inferior metal, most likely because it did not melt at a similar temperature as gold. Platinum has a very high melting point. In the 1700s, a professor in Paris found a method for melting platinum. Kings began commissioning platinum objects in the late 1700s because they felt the pieces were superior to ones crafted with gold. The use of platinum in jewelry became more popular in the 1870s. Although, platinum usually accented other metals rather than serving as the main metal. Platinum was commonly used to create prongs for gemstones, a practice still used today in fine jewelry.

A new invention in the late 1800s made working with platinum much easier. During the Edwardian period (1900-1915), platinum jewelry became hugely popular. World War I caused a platinum scarcity in the market. The precious metal's full glory returned after the war ended during the Art Deco period (1920s).