Sapphire gemstones are available in a wide variety of colors including black, purple, orange, yellow, green, pink, and blue. Sapphires that are not colorless, black, and blue, are commonly called ‘parti sapphires’ or ‘fancy sapphires’. However, note that sapphire gemstones are not available in red color.
The trace elements that are present inside corundum mineral are responsible for the different color shades of diamond sapphire rings. Some of the elements present inside corundum minerals are copper, magnesium, vanadium, titanium, chromium, and iron.
Most of the naturally occurring sapphire gemstones do contain a few inclusions and other flaws. So, diamond cutters usually treat these stones with chemicals or heat to change its color and to improve its clarity. As a result, sapphire gemstones show variations in intensity, shade, and hue
Customers who are planning to buy a blue diamond sapphire ring should make sure to check out the diamond certification documents of the ring, as it will help them to identify the color enhancement processes performed on the gemstone.