This popular member of the gemstone species corundum is available in a rainbow of colors with the exception of red, which is ruby. Blue sapphire is the most popular of all colored gems. This versatile gem is very durable and available in an exciting array of colors, sizes and shapes, making it the perfect alternative to a diamond for engagement rings. Sapphire is the birthstone for September and is designated for the 5th and 45th wedding anniversaries.
Sapphire - Square
AAA: Intense blue color; well cut and eye clean AA: Good blue color (light or dark); well cut and eye clean A: Ranges from a medium light to dark blue color, good cut and clean or minor inclusions B: Light to dark blue color with good to fair cut and minor to moderate inclusions