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.Know More
Pure gold is 24 karats, or 24k. Therefore, 18 karat or 18k gold is 75 percent pure gold. However, if something has “HGE” stamped on it, it means that the object is made of a less valuable metal, such as copper, with a thin layer of gold on the surface to make it look like it’s made of solid gold. It’s only the thin layer on the surface of the object that has the 18-karat density. Electrochemical processes are used to bind the gold to other metals.
Gold plate is often used in costumes to save costs. It’s difficult to tell whether something is made of pure gold just by looking at it from a distance, so gold plating can be a good substitute. The gold plating also means that high percentages of gold, such as 18 karat, are used with gold plating at a cheaper cost when compared to a much lower karat that is solid gold.Learn More
Blue diamonds are rarer and more expensive than white diamonds, according to How Stuff Works. Less than 1 percent of all diamonds are blue and they are rarely put up for sale.Full Answer >
Smoky topaz is the name for a type of gray, black or brown quartz, but it's not a type of topaz. Professional jewelers maintain that the smoky topaz gemstone doesn't exist. Quartz is a type of silicone dioxide, and amethyst and citrine are gemstones made of quartz.Full Answer >
Examine a sapphire under strong light with a jeweler's loupe to look for scratches, bubbles and light reflections that indicate the stone's origins. If in doubt, a certified gemologist can give a definitive answer as to whether or not the stone is genuine.Full Answer >
Restore the shine of marble floors or counter tops by buffing with a polishing compound. For scratches and grooves, use sandpaper to remove the grooves, then buff with the polishing compound.Full Answer >