Irradiated Blue Diamonds

We often receive lab irradiated diamonds at the laboratory that have either natural or laboratory grown origins e g.

Irradiated blue diamonds.

Laboratory certificates mention treated. Irradiation achieves vivid yellow blue green and black colors while hpht typically results in yellow or purple pink hues. After a first transformation via irradiation the color can be changed again by. Irradiated yellow diamonds usually come in orange yellow and darker shades of yellow color whereas hpht processed yellow diamonds tend to be bright yellow.

Although irradiated diamonds have color they still have the same refractive index because they are natural diamonds. Irradiated diamonds are genuine diamonds that exhibit an intense color change such as blue pink green etc after being exposed to a strong radiation treatment. The clarity of the diamonds range from vs1 i3 and they weigh from 0 50 carat and up to 5 carat. There is no formal test for a grass roots level jeweler or gemologist to positively identify irradiation of a diamond to impart an artificial color perhaps the best identification method is to apply experience looking at diamond colors and knowing that natural blue diamonds are.

Photos by diego sanchez left and sally eaton magaña right. Irradiation low temperature annealing. Irradiated diamonds come in blue green canary yellow or even pink as well as many other colors. Irradiated diamonds are sensitive to heat and jewelry repair procedures recutting and repolishing can change their colors.

This 1 00 ct fancy deep greenish blue diamond left owes its color to artificial irradiation which is also evidenced by the color concentration at the culet right. Irradiated diamonds are all some shade of green black or blue after treatment but most are annealed to further modify their color into bright shades of yellow orange brown or pink. This is a controlled heating and cooling process which is often used after irradiation to change a diamond s color to brown orange or yellow. The colors range from blue green orange and yellow colored diamonds.

Caratsdirect2u has close to 100 options of clarity enhanced laser drilled or color irradiated diamonds. Because colored diamonds called fancy colors are so rare and in high demand irradiation is a laboratory process used to produce the same type of effects or similar color for a much less expensive price. Will grade and certify irradiated diamonds and can also laser inscribe the diamond to notify any potential buyer that the diamond has been irradiated. Irradiated identification tools required.

Because this process is permanent the g i a.