Pink sapphire is a variety of corundum prized for its delicate color ranging from pale pink to intense pink, caused by traces of chromium in its crystal structure.
9硬度（满分10）
Heat TreatmentHeat treatment is very common for pink sapphires and improves color and clarity. This treatment is permanent, stable, and widely accepted in the market. Prices are more accessible than untreated stones.
Untreated (No Heat)Entirely natural and untreated pink sapphires are very rare and highly valued. They command significantly higher prices and should be accompanied by a laboratory certificate (GIA, GRS, SSEF) confirming no treatment.
Beryllium DiffusionLess common treatment that modifies surface color through element diffusion. Must be disclosed as it significantly affects the stone's value.
