4.43 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent, GAL certified blue sapphire weighs 4.43 carat, and is fashioned into a classic cushion shape with exact dimensions of 10.85 x 8.04 x 5.43 mm. The cutter employed a mixed brilliant strategy, combining a brilliant crown with a step pavilion to balance scintillation and color depth, and to maximize the apparent saturation from both face up and face down viewing angles. The pavilion depth yields an approximate depth ratio of 57.5 percent, a proportion that supports strong light return while preserving weight, and the excellent polish enhances facet crispness and clean windowing. Clarity is graded eye clean when evaluated at eye level, which means the stone shows no significant inclusions to the naked eye, allowing the vivid color intensity to read evenly across the table. Origin is Ceylon Sri Lanka, a source renowned for medium to vivid blue tones with a touch of violet, and the sapphire has been heat treated, a standard and stable enhancement that improves tone and clarity without compromising durability. A GAL certificate accompanies the stone, documenting weight, measurements, clarity observations, treatment disclosure, and origin attribution.

For custom settings this 4.43 carat Ceylon sapphire performs exceptionally well with color neutral white diamonds as complementary stones, where small brilliant cut melee set as a halo or pavé shoulders will amplify scintillation without competing with the rich blue. Tapered baguette side stones or tapered step cut baguettes echo the pavilion geometry, reinforcing optical symmetry and providing a refined transition in a three stone or ring shank composition. For contrast, a thin bezel of warm 18 karat yellow gold or rose gold will introduce a subtle warmth that lifts the vivid blue, while platinum or 18 karat white gold will present a modern, high contrast silhouette that emphasizes tone and saturation. Pink sapphires or padparadscha accents can introduce a contemporary color dialogue, while green emerald accents will create a dramatic complementary pairing. When designing a custom piece, consider a low profile bezel to protect the girdle while allowing the crown facets to read freely, or a cathedral setting that permits side light to play across the mixed brilliant facets, showcasing pleochroic flashes between blue and slight violet. The Natural Sapphire Company can provide CAD visualizations and stone matching for side stones to ensure facet orientation and color balance are optimized for maximum brilliance and color harmony.