Editing Sapphire (section)

===Parti sapphires===

Particolored sapphires (or bi-color sapphires) are those stones that exhibit two or more colors within a single stone.<ref name=GIA/> The desirability of particolored or bi-color sapphires is usually judged based on the zoning or location of their colors, the colors' saturation, and the contrast of their colors.<ref name="International Gem Society">{{Cite web |title=Parti Sapphires: the Colored Gemstones for 2021 |url=https://www.gemsociety.org/article/parti-sapphires-the-colored-gemstones-for-2021/ |access-date=20 May 2021 |website=International Gem Society |language=en |archive-date=20 May 2021 |archive-url=https://web.archive.org/web/20210520002707/https://www.gemsociety.org/article/parti-sapphires-the-colored-gemstones-for-2021/ |url-status=live }}</ref> Australia is the largest source of particolored sapphires; they are not commonly used in mainstream jewelry and remain relatively unknown. Particolored sapphires cannot be created synthetically and only occur naturally.<ref name="International Gem Society" />