Saturday, October 27, 2007

All about Onyx!

•What is onyx?
Onyx is a form of the quartz mineral chalcedony that occurs in many colors and in semitranslucent to completely opaque forms. The gemstone commonly called “black onyx” is chalcedony that has been dyed completely black, thereby eliminating the natural color bands that often occur in chalcedony, similar to those found in agate. Black onyx is one of the commemorative gemstones for the 7th wedding anniversary.

•Where is onyx found?
The noble stone onyx (a gemstone must surely be held in high regard to be carved into chess pieces, as is onyx!) in all its forms and colors, and in all varieties of translucency and color banding intensity, is found in every country on earth.

•Color
Natural onyx occurs in many colors. including red, orange, apricot, several shades of brown and cream, and in variations of these hues. Sardonyx, a combination of sard (a brownish-red chalcedony) and onyx, is usually the color of rust with white color banding. Black onyx, as noted above, is chalcedony dyed pure black. Other dyed varieties of onyx include the colors blue, green, and red.

•Shape
Onyx is cut and polished into beads of all shapes; carved into cameos and intaglios, cut and polished into both cabochons and flat-top, nonfaceted stones; and fashioned into figurines and chess pieces. Onyx’s striking color and smooth texture make it an especially appealing medium for carvings and figurines.

•Durability
Onyx is a hard 7 on the Mohs Scale and is a relatively tough stone to work with. It is suitable for regular wear in rings, earrings, pendants. although colored onyx with distinct banding is going to be more vulnerable to chipping because of its layered nature.

•Quality
Onyx is plentiful and affordable and its quality is therefore determined by the intensity (and personal appeal) of its color, the smoothness of its texture, and the absence of surface imperfections like cracks or pitting. Interestingly, in many cases, the “value” of a particular piece of onyx sculpture or jewelry will increase if there is obvious craftsmanship or a superior artistic element to the piece. For instance, an intricately carved, artistically superior onyx cameo will be worth more, and will be considered of higher quality, than a cameo of lesser craftsmanship. All black onyx is usually considered of equal quality as long as the color is uniform and the cutting of the stone is competent; the value of black onyx increases proportionately for the larger stones.

•Legend and lore
According to legend, onyx can relieve pain when placed on the bellies of women in labor, as well as protect its wearer from the “evil eye.” Onyx is also reputed to balance the “female energies” present in everyone, both male and female. The darker onyx stones are said to enhance the power energies of males; the lighter onyx stones are “gentler” stones and will more readily empower women than men.

•Care
Do not clean your onyx jewelry in an ammonia-based jewelry cleaner. Instead, soak it in a mild soapy solution and rinse it thoroughly under warm to hot water. Dry your onyx jewelry with a soft cloth and do not store it in direct sunlight. Also, black onyx, because of its dyed nature, should not be exposed to intense, direct sunlight or heat, immersed in chemical solutions, nor should it be worn while swimming or showering.