Golden yellow sapphire is the most prestigious variety of yellow sapphires, prized for its rich, warm color evoking gold and sunshine. This rare gem combines exceptional brilliance, durability and a vibrant golden hue.
9硬度（满分10）
High Temperature Heat TreatmentHeat treatment is the most common method to improve color and clarity of yellow sapphires. This permanent and stable process is considered an accepted industry practice. Heating destroys 'feather' type inclusions present in natural stones.
Untreated (Natural)Untreated golden yellow sapphires are much more valuable and rare. They retain their natural 'feather' type inclusions which serve as proof of their natural state. These stones must be accompanied by a recognized laboratory certificate (GIA, GRS, SSEF) attesting to the absence of treatment.
DiffusionLess common treatment that modifies the stone's surface color. This treatment must be disclosed as it significantly affects value. Rarely used for quality yellow sapphires.
