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Glossary

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Laser Inscription
With today’s laser technology almost anything can be inscribed on the girdle of a diamond. Traditionally this will be the grading certificate number from the GIA, HRD or others. This is generally done at the time of grading by the grading company. Other companies offer services that include adding wedding dates and names.
Light Yellow
A trade term used by some dealers to cover a wide range of colors in the low end of the diamond color-grading scale. Stones in the broad classification show a very obvious yellow tint to the unaided eye.
Lot
(a) A group of rough diamonds offered for sale by the Diamond Trading Co. to firms invited to view its “sights.” A lot usually includes a wide variety of material. (b) Also applied by diamond merchants to their regroupings of these diamonds according to color, make, and comparative freedom from imperfections after fashioning.


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