FTC Guides About Platinum Jewelry
- Dec 19, 2018
- 0 comments
- by Robert Kohler
Platinum About Platinum Jewelry Platinum jewelry is rarely 100% pure platinum. Usually, the platinum is mixed with similar metals or non-precious base metals. Generally, the higher the percentage of pure platinum, the higher the value of the jewelry. Metals used in platinum jewelry usually fall...
FTC Guides on Diamonds
- Dec 19, 2018
- 0 comments
- by Robert Kohler
Diamonds Diamonds A diamond’s value is based on four criteria: Color often is graded on a scale established by the Gemological Institute of America (GIA). On the GIA scales, color is rated from D to Z, with D at the top. Cut refers to the...
FTC Guides on Pearls
- Sep 21, 2018
- 0 comments
- by Robert Kohler
Pearls can be natural, cultured, or imitation. Natural pearls are made by oysters and other mollusks. Cultured pearls also are grown by mollusks, but with human intervention: an irritant introduced into the shells causes a pearl to grow. Imitation pearls are man-made with glass, plastic,...
FTC Guides on Gemstones
- Sep 21, 2018
- 0 comments
- by Robert Kohler
Gemstones There are three primary types of gemstone products: Natural gemstones occur in nature and can be rare and expensive. Laboratory-created stones — which also are referred to as synthetic, laboratory-grown, or manufacturer-created — have the same chemical, physical, and visual properties as natural...
