|Natural & Synthetics||10||10||3.53||3.51||2.417||2.417||–||I||.044|
Colors: Colorless, gray, yellowish brown, brown, yellow, blue, pink, orange red purple green black
Transparency: Transparent to Opaque
UV long: Inert to strong, most colors, blue phosphorescence possible. Black inert. Yellow to greenish yellow phosphorescence in synthetics.
UV short: Inert to strong, most colors, blue phosphorescence possible. Black inert. Yellow to greenish yellow phosphorescence in synthetics.
Absorption Spectrum:Cape series, 415.5nm, other lines possible. Brown and green, 504nm and often 415.5nm, other lines possible. Yellow, 504nm. Pink, only a vague band centered on 563nm. Irridated yellow, 415.5nm, 497nm, 504nm and 597nm.
Polish Luster: adamantine
Fracture: step like
Fracture Luster: adamantine
Toughness: Very good
Size: To large
Rarity: Colorless, very common. Brown, somewhat common, other colors rare.
Heat Sensitive: No
Enhancements: Irradation, detect by spectrum. Coating, laser drilling, fracture filling. Detect with magnification.
Natural Diamonds: Adamantine luster, sharp facet edges, bearded girdles, naturals on girdle, crystal inclusions, trigons, no see through effect.
CVD Diamonds: line at 737nm.
HPHT Diamonds: hour glass of graining, inclusions with metallic luster…