Padparadscha Sapphire

Related: Corundum Varieties

Color-Change SapphirePink SapphireRubySapphireStar RubyStar SapphireWhite SapphireYellow Sapphire

Key Differentiators

• Unique pinkish-orange to orangey-pink hue — named 'lotus flower' color
• Strong orange-red LW UV fluorescence — stronger than most other sapphires
• Corundum hardness 9 separates from spessartite, hessonite, and orange topaz
• No facet doubling — separates from orange tourmaline
• Dichroic — two distinct pleochroic colors visible in dichroscope

Natural vs. Synthetic

Synthetic padparadscha sapphire is commercially available (Flame fusion (Verneuil), Hydrothermal). Distinguishing natural from synthetic typically requires microscopic examination of internal features.

• Microscopy — inclusions: Natural: rutile silk needles (at 60°/120°), zircon crystals with stress halos, fingerprint healing fractures, liquid inclusions, angular or hexagonal color zoning. Sri Lankan material may show native-element inclusions. Synthetic: Flame fusion: curved growth striae and gas bubbles (diagnostic). Hydrothermal: nail-head spicules or visible seed plate. Exceptionally clean stone with vivid orange-pink color should raise suspicion.
• UV Fluorescence — LW (365 nm): Natural padparadscha sapphire: strong to very strong orange-red LW UV fluorescence. One of the most strongly fluorescent sapphires — especially Sri Lankan material. Synthetic: Flame fusion synthetic orange-pink corundum often shows moderate to strong orange fluorescence also — not conclusive alone. Hydrothermal synthetic tends weaker. Florescence character alone does not separate natural from synthetic; microscopy is required.

Common Simulants

• Spessartite garnet (orange): Spessartite: isotropic (singly refractive); RI 1.790–1.815; SG 4.12–4.18; no dichroism; shows garnet absorption spectrum; softer (7–7.5).
• Hessonite Garnet: Hessonite: isotropic; RI ~1.742; SG ~3.65; no dichroism; characteristic heat-haze inclusions under magnification.
• Orange topaz (Imperial): Topaz: biaxial positive; RI 1.619–1.627; SG 3.53; perfect basal cleavage; no matching dichroism; softer (8 Mohs).
• Orange-pink glass: Isotropic; gas bubbles under loupe; no dichroism; SG variable; conchoidal fracture.

Commonly Confused With

Commonly confused with: Spessartite Garnet, Hessonite Garnet, Topaz, glass.

Treatments

• Heat Treatment (common; may or may not include beryllium diffusion)
• Beryllium Diffusion (to add or intensify orange — detectable only by SIMS lab analysis)

Price Context

Price context is approximate. GemID is not an appraisal tool. Results are indicators, not certified valuations.

About Padparadscha Sapphire

Pinkish-orange to orangey-pink corundum variety; color must show both pink and orange in balance. Primary source: Sri Lanka; also Madagascar and Tanzania. Strong LW UV orange-red fluorescence from Cr contribution. Beryllium diffusion treatment (adds or intensifies orange) is undetectable without SIMS analysis — laboratory certification is required for premium stones.