5.72 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This beautiful transparent 5.72 carat cushion shape blue sapphire measures 11.36 x 9.95 x 5.22 mm, and features a mixed brilliant cut that balances sparkle with depth of color. The stone exhibits vivid color intensity and an excellent polish, presenting a rich, saturated blue that is characteristic of fine Ceylon material. Origin Ceylon, Sri Lanka, the sapphire is a gem variety of corundum, composed of aluminum oxide with trace iron and titanium that produce the blue hue, and it has been heat treated to enhance and stabilize color, a widely accepted and permanent enhancement in the trade. Clarity is graded as very very slightly included when evaluated at eye level, meaning the stone appears clean to the naked eye with only minor internal features visible under magnification, an attribute that preserves both visual appeal and light performance for an educated buyer seeking investment quality as well as everyday beauty.

From a durability and practical use perspective this sapphire ranks at nine on the Mohs hardness scale, making it second only to diamond in hardness, and significantly harder than common jewelry gems such as topaz at eight and quartz at seven, which ensures exceptional resistance to scratching and abrasion in daily wear. This level of hardness makes the stone well suited for rings, pendants, and heirloom pieces, and its substantial 5.72 carat weight and cushion proportions provide a commanding presence in a variety of settings, while a protective bezel or halo design can further secure the stone and showcase its vivid blue. At The Natural Sapphire Company we emphasize transparent grading information, documented origin, and clear disclosure of treatments, and this sapphire exemplifies those standards, combining notable weight and excellent polish with a rare Ceylon color profile and a clarity grade that will satisfy discerning collectors and connoisseurs. For buyers who prioritize long term value, durability, and certified provenance, this cushion blue sapphire represents a well documented and visually striking choice.