0.57 Ct. Blue Sapphire from Ceylon (Sri Lanka)

One transparent 0.57 carat round blue sapphire, dimensions 4.65 x 4.67 x 3.37 mm, faceted with a mixed brilliant cut, clarity graded very very slightly included at eye level, vivid color intensity, excellent polish, heat treated, origin Ceylon Sri Lanka. The mixed brilliant design pairs a brilliant style crown with a modified pavilion geometry to optimize light return and color saturation, producing clean facet junctions and controlled scintillation. The table is proportioned to present a vivid face up color while the moderately deep pavilion, approximately 72 percent of the average diameter, concentrates blue saturation and minimizes windowing, so the stone reads richly colored even in small, elegant settings. Precise facet alignment and the excellent polish amplify internal reflections and create sharp light performance that is consistent from tabletop to pavilion tip.

Although the clarity is graded very very slightly included, the stone presents an effectively flawless appearance to the unaided eye, and this apparent flawlessness enhances its beauty from every angle. Minute inclusions are confined and do not interrupt light pathways, allowing the vivid Ceylon blue to display even, saturated hue and strong tone across the face of the gem. The excellent polish yields crisp, mirror like facets that elevate brilliance and contrast, creating lively flashes with each movement. Heat treatment is a stable and commonly accepted enhancement that intensifies the cornflower to royal blue characteristic of Sri Lankan sapphires, improving tone and uniformity without compromising structural integrity. Given the corundum hardness and the gem s balanced proportions, this sapphire will perform reliably in bezel or prong settings, maintaining its polished facets and vivid face up color through daily wear. At The Natural Sapphire Company this piece is presented for connoisseurs who value exacting craftsmanship and optical performance, a compact yet powerfully colored sapphire that reads flawless to the eye and offers superior light behavior, saturation, and durability for refined jewelry applications.