A real emerald will radiate green light when placed in a glass pot filled with water while an imitation will not. Another way to tell the difference is to place a drop of water on the stone. If it spreads out, the emerald is not real.Continue Reading
Emeralds must always be medium to dark green. Lighter colors are not considered emeralds, but instead are called green beryl. As with other gemstones, the value of an emerald decreases if there are visible flaws that affect the stone's clarity and transparency. Generally, the larger the emerald, the more it will cost. Emeralds are difficult to cut because they contain many very small cracks which make them prone to breakage.
Synthetic, or man-made, emeralds generally sell for between $500 and $1,000 per carat, which is extremely low for this type of stone. For many, this can be a sign that the stone in question is not a genuine emerald. Many sellers will try to pass off a synthetic stone as real because the chemical composition of the two stones is very similar.
Besides the tests listed above, the only real way to find out if an emerald is natural or synthetic is to take it to a gemologist for testing.Learn more about Precious Metals & Gems
The most reliable ways to test gold content are with an electronic gold-testing machine or with acid testing. Electronic machines test the metal's conductivity and can be accurate up to 24 karats, and acid mixes test the metal's chemical reactions to indicate purity to an accuracy of over 18 karats. The acids used to test gold quality are very corrosive and are not as exact as electronic testers.Full Answer >
Faux pearls are man made, or fake, pearls There are various ways to make fake pearls, including using fish scales and wax.Full Answer >
One of the easiest ways to tell if an object is gold or brass is to look at the size. Most large objects are not made of gold.Full Answer >
Some ways to identify the stamp marks on silver include taking the piece to an expert appraiser or looking at an online or printed encyclopedia of marks. These marks are called "hallmarks," or sometimes "maker's marks," and convey a good deal of information about the piece.Full Answer >