0.54 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 0.54 carat round blue sapphire is a compact example of classic Ceylon color and fine workmanship, presented by The Natural Sapphire Company. The stone measures 5.03 x 4.99 x 2.96 mm, and it is cut in a mixed brilliant style to balance brilliance with color saturation. The gem is transparent, with a medium intense blue tone that reads vivid under daylight and retains a lively presence in indoor lighting. Clarity is graded as very very slightly included, evaluated at eye level, which means the gem appears clean to the naked eye with only minimal inclusions apparent on close inspection. The polish is excellent, providing crisp facet junctions and mirror like surfaces that enhance the stone s internal reflections. This sapphire has been heat treated, a stable and widely accepted enhancement in the trade that improves color uniformity and visual appeal while leaving the gem structurally sound.

When assessing quality for an informed buyer, several objective factors make this sapphire notable. The mixed brilliant cut intentionally combines facets that maximize return of light, while allowing a deeper distribution of blue color within the pavilion and crown, which is particularly effective in stones of this size. The dimensions are well proportioned for a round 0.54 carat gem and produce an attractive face up size on the finger. The very very slightly included clarity grade evaluated at eye level confirms that the stone is essentially eye clean, so the beauty of the color and cut is not compromised by visible inclusions. Medium intense color intensity sits in a desirable range for Ceylon sapphires, offering a balance between lively saturation and a pleasing lightness that reads elegant in both modern and classic settings. Heat treatment is disclosed, and in professional practice this treatment is permanent and improves long term marketability, when performed by experienced lapidaries under controlled conditions.

The journey of this sapphire begins high in the historic gem gravels and primary deposits of Sri Lanka, often referred to by its ancient name Ceylon. Artisanal and small scale mining operations have long been the source of many of the islands finest sapphires, where careful sifting and washing of alluvial gravels produces rough material with varying colors. The rough that yielded this particular gem would have been identified for its promising hue, then sold through regional cutters and dealers to specialists who understand how to reveal the best color with minimal weight loss. Selecting a mixed brilliant cut for a round stone of this size is a deliberate choice, because it allows the cutter to preserve carat weight while optimizing the return of blue tones from within the crystal. After preforming, the sapphire underwent a controlled heat treatment to stabilize and intensify the color, a step that has been used for decades across Sri Lanka and other sapphire producing regions. Following heat treatment, precision faceting and excellent polish were applied to create the crisp appearance you see today. The Natural Sapphire Company then inspected and photographed the finished gem, verifying dimensions, weight, cut attributes, color appearance, clarity grade, and disclosure of enhancement, and integrated the sapphire into our inventory with full provenance of origin listed as Ceylon.

For the educated buyer this sapphire represents a confluence of desirable attributes, useful both for everyday wear and as a considered addition to a collection. Sapphire rates nine on the Mohs scale, offering exceptional durability for engagement rings and heirloom pieces, while the transparent clarity and excellent polish ensure lively sparkle under movement. The medium intense Ceylon blue is a historically sought after palette that tends to appeal to connoisseurs who value hue and tone over artificially deep saturation. The mixed brilliant round shape reads slightly larger on the finger than some other cuts at similar carat weight, due to its efficient table and crown proportions, making it a smart choice for settings where visual impact is important. We recommend classic solitaire or halo settings to showcase the color and clarity, or a three stone arrangement where this gem can be the subtle, luminous center. The piece can be accompanied by independent gem testing upon request, and we are transparent about the heat treatment disclosure and origin. At The Natural Sapphire Company we stand behind the sourcing and the quality assessment of every stone, and we welcome inquiries about mounting options care guidance and certification to help you make a fully informed purchase.