Gemstone treatment
Irradiation, Diamond
Can produce green, blue, black, yellow, orange, or pink colors. Color may appear concentrated near the surface or along facet edges depending on method.
01
What to look for
Can produce green, blue, black, yellow, orange, or pink colors. Color may appear concentrated near the surface or along facet edges depending on method.
02
What it means
Irradiation changes diamond color by creating color centers, often followed by annealing. Disclosure is required.
03
Expert move
Natural green diamond and irradiated green diamond can be difficult to separate. Laboratory testing is essential for valuable stones.