Buying Diamonds Without Being Ripped Off
By Sam Serio
Buying diamond jewelry can be fun, exciting and confusing.
Whether youre considering a gift of diamond jewelry for someone special or as a
treat for yourself, take some time to learn the terms used in the industry. Heres
some information to help you get the best quality diamond jewelry for your money, whether
youre shopping in a traditional brick and mortar store or online.
A diamonds value is based on four criteria: color,
cut, clarity, and carat. The clarity and color of a diamond usually are graded. However,
scales are not uniform: a clarity grade of slightly included may represent a
different grade on one grading system versus another, depending on the terms used in the
scale. Make sure you know how a particular scale and grade represent the color or clarity
of the diamond youre considering. A diamond can be described as flawless
only if it has no visible surface or internal imperfections when viewed under 10-power
magnification by a skilled diamond grader.
As with other gems, diamond weight usually is stated in
carats. Diamond weight may be described in decimal or fractional parts of a carat. If the
weight is given in decimal parts of a carat, the figure should be accurate to the last
decimal place. For example, .30 carat could represent a diamond that weighs
between .295 - .304 carat. Some retailers describe diamond weight in fractions and use the
fraction to represent a range of weights. For example, a diamond described as 1/2 carat
could weigh between .47 - .54 carat. If diamond weight is stated as fractional parts of a
carat, the retailer should disclose two things: that the weight is not exact, and the
reasonable range of weight for each fraction or the weight tolerance being used.
Some diamonds may be treated to improve their appearance
in similar ways as other gemstones. Since these treatments improve the clarity of the
diamond, some jewelers refer to them as clarity enhancement. One type of treatment -
fracture filling - conceals cracks in diamonds by filling them with a foreign substance.
This filling may not be permanent and jewelers should tell you if the diamond youre
considering has been fracture-filled.
Another treatment - lasering - involves the use of a laser
beam to improve the appearance of diamonds that have black inclusions or pots. A laser
beam is aimed at the inclusion. Acid is then forced through a tiny tunnel made by the
laser beam to remove the inclusion. Lasering is permanent and a laser-drilled stone does
not require special care.
While a laser-drilled diamond may appear as beautiful as a
comparable untreated stone, it may not be as valuable. Thats because an untreated
stone of the same quality is rarer and therefore more valuable. Jewelers should tell you
whether the diamond youre considering has been laser-drilled.
Imitation diamonds, such as cubic zirconia, resemble
diamonds in appearance but are much less costly. Certain laboratory created gemstones,
such as lab-created moissanite, also resemble diamonds and may not be adequately detected
by the instruments originally used to identify cubic zirconia. Ask your jeweler if he has
the current testing equipment to distinguish between diamonds and other lab-created