5.36 Ct. Blue Star Sapphire from Ceylon (Sri Lanka)

When you are searching for a singular gemstone that ends the quest for something remarkable, you want clarity, provenance, and visual impact. Many buyers begin looking for an engagement gem that feels timeless, or a rare piece for a collection that will be admired for generations, only to find stones that lack character, documentation, or the presence that a true star sapphire offers. This beautiful semi translucent blue star sapphire, offered by The Natural Sapphire Company, answers those needs with confidence. It is a statement gem that brings together a vivid blue tone, a classic cabochon silhouette that displays a clear star effect, and full laboratory verification by GIA. For anyone who values authenticity and wants to avoid guesswork, this sapphire provides the reassurance of certified origin, documented treatment status, and the kind of visual drama that makes an engagement ring unforgettable, or a collection complete.

The gem itself is an exceptional example of Ceylon star sapphire material, weighing 5.36 carats, with an elegant oval shape and exact dimensions of 10.48 x 8.34 x 6.13 mm, which make it large enough to show presence on the finger, yet ideal for a refined setting. It is cut as a cabochon to emphasize the asterism, and its semi translucent body allows light to interact with the silk inclusions that form the star. The color is classified by the lab as Blue, and the stone shows vivid color intensity that reads deep and saturated, while still allowing the star to float across the surface. Clarity is graded as slightly included when evaluated at eye level, which is typical for natural star sapphires and contributes to the strength of the star, and the polish is excellent, giving a smooth, reflective dome. Importantly the gem has no enhancement, and the GIA certification confirms both its natural origin in Ceylon Sri Lanka and its untreated nature, details that matter for rarity and long term value.

If you are imagining this sapphire as the centerpiece for an engagement ring, there are elegant design options that will make the star the hero of the piece. A simple, low bezel setting in platinum or 18 karat white gold will protect the cabochon dome and keep the star centered and visible as the hand moves. For a more classic, vintage inspired look, a halo of small brilliant diamonds can enhance the blue without overpowering the star, and a slightly raised gallery allows light to reach the stone for a lively face up appearance. For collectors who prefer to keep the gem loose, it is an excellent addition to a cabinet that favors natural, untreated material from respected origins, and its GIA report preserves its marketability. This sapphire is durable enough for regular wear with proper care, and because no enhancement has been applied, its appearance will age naturally, making it a meaningful heirloom.

At The Natural Sapphire Company we understand that acquiring a stone with this level of presence and documentation can feel like the end of a long search, and we are committed to helping you make it yours with confidence. We can provide a copy of the GIA report, additional close up images, and a video that shows the star in motion so you can see how the asterism behaves under different lighting and angles. Our team can also work with you to design a setting that respects the stone geometry and secures the cabochon for everyday wear, or advise on insurance appraisal and secure shipping for collectors. If you seek a rare, vivid, Ceylon origin star sapphire that is certified, untreated, and beautifully finished, this 5.36 carat oval cabochon is an ideal solution, and The Natural Sapphire Company stands ready to assist you in bringing it into the piece you have imagined.