Diamonds
Natural Green Diamonds — radiation-tinted rarities
Natural green diamonds derive their color from natural irradiation (exposure to radioactive materials or radiation fields) which alters the diamond’s crystal lattice near the surface — producing green hues. This natural irradiation over geological timescales is uncommon; many “green” diamonds on the market are artificially irradiated (treated), so certified natural-green stones are especially prized. International Gem SocietyOnly Natural Diamonds
Market prices (guidance and auction examples)
• Auction precedent: “The Ocean Dream” (a 5.51 ct bluish-green) reportedly sold for US$8.9M — that is about US$1,615,245 per carat (8,900,000 ÷ 5.51 ≈ 1,615,245). Astteria
o Calculation: 8,900,000 ÷ 5.51 = 1,615,245.01 USD/ct.
• Market guidance: natural green diamonds commonly command hundreds of thousands to millions per carat, depending on tone, saturation, and size; truly exceptional green stones can reach $1M+/ct or more in auction contexts. The Diamond ProOnly Natural Diamonds
______________
Rarity: Natural greens are among the rarest color classes—some sources say they are less than 0.1% of all fancy colored diamonds submitted for grading. Only Natural Diamonds
Why collectors pay a premium• Genuine natural radiation coloration is rare and scientifically interesting; colorful examples with even tone and high clarity are quite collectible. Certification (GIA et al.) proving natural origin is essential and drives price. International Gem Society
