: The gem reached modern heights of fame through Princess Diana's 12-carat engagement ring , which is now worn by Catherine, Princess of Wales [6, 9, 29].
One of the largest faceted gem-quality blue sapphires; near flawless [14, 24]. Smithsonian Museum [14] 563.35 carats Sapphire Blue
: A well-proportioned cut is essential to bring out the stone's brilliance and prevent it from looking dull or "inky" [24, 25, 29]. : The gem reached modern heights of fame
Blue Sapphires Stone: Prices, Qualities, Treatments & origins! Private Collection [14]
If you are looking for a high-quality piece, experts at the GIA and Brilliant Earth suggest focusing on these "4 Cs":
: While most sapphires have natural "inclusions," look for eye-clean stones where no flaws are visible to the naked eye [4, 15, 29].
The largest known blue star sapphire in the world, discovered in 2016 [14, 17]. Private Collection [14]