Ruby Rubies are red corundum, the same mineral that is sapphire in any other color. Rubies are considered to be the queen of the gem world, and high quality rubies often command higher prices per carat than diamonds. Rubies are mined in Myanmar (Burma), Thailand, Sri Lanka, Vietnam, Africa, Afghanistan and Central Asia, though most high quality rubies come from Burma. Rubies are the equivalent of sapphires on the Mohs hardness scale, ranking a 9, second only to diamonds. This makes them an excellent choice for jewelry as they are resistant to chipping and scratching, though they still require special care to maintain their beauty. Learn more about the July birthstone Ruby buying guideA high quality ruby is pure red, with no orange or purple overtones. The richer and clearer the red, the more valuable the gem. Make a point of viewing the ruby under natural light to judge its color properly. Some rubies show a marked fluorescence in natural light, seeming to shimmer. This quality will add to the value of the gem. Look for rubies with no inclusions that are visible to the naked eye - with one exception. 'Silk', fine, regular inclusions in the stone, will give a star effect when the stone is cut in a cabochon. A stone with the right degree of silk will be of higher value than a clean stone. Rubies display well in almost any type of cut, but avoid cuts that are shallow or poorly faceted. Many rubies that aren't suitable for faceting are still beautiful when cut in a cabochon or pillow shape. Do expect to pay for rubies of gem quality, though. After imperial jadeite, rubies are the most expensive gems in the world. Watch for the following terms which may mislead you into thinking that you are buying a ruby:
Caring for rubiesRubies are sturdy stones, but are still vulnerable to breakage and chipping. The same cautions should be applied to them as to any other precious gem. Everyday caution Remove ruby jewelry before engaging in any work that might bang the stones against hard objects. Don't use hairspray, makeup, lotions and the like while wearing rubies. They can leave residue on the ruby that will dull their shine. Some rubies may have been filled or treated to hide surface scratches or inclusion. Avoid using household chemicals or abrasives when wearing them. Cleaning rubies Ruby jewelry should be wiped with a soft, dry cloth often to remove dust and residue that will mar its sparkle. For more intense cleaning, use warm water and mild dishwashing detergent in solution. Soak the piece for 15 minutes, then clean with a soft brush. Use a toothpick to clean in hard to reach places. Rinse with clear water and examine under good light for any remaining residue. If there is any, repeat the process. Dry ruby jewelry thoroughly before wearing or storing. Storing rubies Because of the hardness of ruby jewelry, it's important to protect other gems stored with it. Store your ruby jewelry in soft cloth pouches in a jewelry box. Avoid exposure to extreme temperature changes which can crack the stone. |
