A diamond of 100 carats or more is not issued a specific term, so it is simply called a diamond. It is, however, common for large diamonds of that size to have individual names, such as the famous 112-carat "Hope Diamond."
Other large famous diamonds include "The Paragon," a 137.82-carat, seven-sided cut diamond. Another prominent example is the "Koh-I-Noor," a 105.60-carat diamond residing in the modern British crown jewel collection. It is common for large diamonds to have considerably more carats prior to being cut, but the trade-off for the loss is a fine-quality gem with plenty of visual appeal.Learn More
The imprint "18k HGE" on gold essentially means that the gold is costume jewelry with little or no value. "HGE" stands for "hard gold electroplated," which means the object is not solid 18 karat gold throughout. "18k" refers to the type of plating used on the outer surface of the object.Full Answer >
Olympic gold medals are required to be made of sterling silver covered with at least 6 grams of pure gold, according to About.com. Each gold medal must have a diameter of at least 60 millimeters.Full Answer >
Gold stamped "925" is probably gold-plated sterling silver. The "925" is part of a precious metals hallmark system, but only silver is denoted "925," or 92.5 percent, pure.Full Answer >
Clean gold that is lightly soiled or tarnished with dish soap and a toothbrush. Use a brush with soft bristles to avoid scratching the gold.Full Answer >