Education
Fancy Color Valuation (7.38)
Two similar lab reports may seem to be identical stones, but when the items are compared side by side, subtle differences may be apparent.
Fancy Color Valuation (7.38)
Two similar lab reports may seem to be identical stones, but when the items are compared side by side, subtle differences may be apparent.
Natural Fancy Colors (7.37)
Natural fancy colors can be extremely valuable, even in the very common yellow hue.
Natural Fancy Colors (7.37)
Natural fancy colors can be extremely valuable, even in the very common yellow hue.
Irradiated Diamond Valuation (7.36)
Irradiated diamonds are valued by their appeal after the treatment is completed.
Irradiated Diamond Valuation (7.36)
Irradiated diamonds are valued by their appeal after the treatment is completed.
Americium-241 (7.35)
At least one U.S. patent employs the use of americium-241 to irradiate diamonds, causing green color changes by having direct contact with the radioactive component in the early 1970s and...
Americium-241 (7.35)
At least one U.S. patent employs the use of americium-241 to irradiate diamonds, causing green color changes by having direct contact with the radioactive component in the early 1970s and...
Radioactive Residue (7.34)
All three of these irradiation methods do not leave any detectable radioactive residue in the stone after treatment. This was not always true.
Radioactive Residue (7.34)
All three of these irradiation methods do not leave any detectable radioactive residue in the stone after treatment. This was not always true.
Van de Graaff Generator Method (7.33)
Depending on the original stone color, the Van de Graaff generator method is capable of producing bluish hues.
Van de Graaff Generator Method (7.33)
Depending on the original stone color, the Van de Graaff generator method is capable of producing bluish hues.