Thought to result from distortion in the crystal lattice, similar to the mechanism behind pink, sometimes combined with hydrogen. It is not fully settled science, which is itself a measure of how few stones there are to study.
How large do natural purple diamonds get?
Rarely large. Most that reach the market are well under a carat, and a strongly saturated purple above one carat is exceptional. Buyers should calibrate expectations to the material that actually exists.
What is the difference between purple and violet in a diamond?
Violet sits closer to blue on the spectrum and is rarer still. Laboratories assess them separately, and a report reading violet rather than purple describes a genuinely different and scarcer color.
Do purple diamonds usually have a modifier?
Almost always — pinkish purple and grayish purple are the most common. A purple without any modifier is extremely unusual and priced as such.
Which cuts suit purple diamonds?
Radiant and cushion, as with other fancy colors, because brilliant faceting deepens the apparent saturation. In a color this scarce, cutters prioritise retaining color over ideal proportions.
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