A considered guide to natural fancy color diamonds, their geological origins, gemological classification and exceptional rarity.
Discover how nature creates color within diamond, how laboratories describe it and what distinguishes an important stone.
An introduction to hue, tone, saturation, natural color origin and the principal factors that determine rarity and value.
Read the articleFrom nitrogen and color intensity to modifiers, cut and expert selection.
Discover yellowCrystal distortion, modifying hues and the qualities behind their extraordinary rarity.
Discover pinkBoron, depth of color and the science behind one of diamond’s rarest hues.
Discover blueNatural radiation, surface color and the complexity of confirming color origin.
Discover greenRed, violet, orange and other exceptional colors found only in extraordinary circumstances.
Explore rarity