3.69 Ct. Blue Sapphire from Thailand

This oval shape blue sapphire, weighing 3.69 carat, measures 10.33 x 8.32 x 4.77 mm, and is a superb example of how structure creates exceptional sparkle. Cut in a mixed brilliant style, the pavilion and crown facets are calibrated to corundum body refractive properties, so light that enters the stone is guided and returned as lively flashes rather than lost through the sidewalls. The intense color intensity and excellent polish amplify contrast between deep blue flash and bright facet scintillation, giving each movement a lively tapestry of light. With a clarity grade of very slightly included at eye level, transparency remains high, so internal reflections travel unimpeded, creating a depth and brilliancy that mass market stones with heavy inclusions simply cannot produce. Heat treated in a stable, industry accepted process to bring out the rich blue, and originating from Thailand, this sapphire combines natural material quality with expert enhancement and finishing, making it a refined choice from The Natural Sapphire Company.

Compared to other sapphires on the market, this stone stands apart because of the way its mixed brilliant cut maximizes light return for sapphires specifically, rather than relying on generic cuts designed for diamonds. Many commercial sapphires are cut shallow or with large facets that mute scintillation, while this sapphire’s carefully proportioned crown and pavilion facets create both lively pinpoint flashes and broad flashes of color, leveraging corundum pleochroism to show different blue tones as the gem moves. The excellent polish reduces surface light scattering, so sparkle is sharper and more energetic than typical pieces, and the very slightly included clarity preserves long range sparkle without visible flaws. For buyers who compare value and visual performance, this gem offers a rare balance of intense color, clean transparency, and cutter expertise, delivering a sparkle that is unmatched among stones in its class. From an investment and aesthetic standpoint, choosing this sapphire from The Natural Sapphire Company means selecting a gem where structure, cut, and finish were prioritized to achieve superior light performance and enduring beauty.