6.85 Ct. Bi Color / Parti Sapphire from Ceylon (Sri Lanka)

When you are searching for a single stone that will end the pursuit of perfection, whether you are choosing an engagement ring that will be worn every day, or selecting a rare gemstone to anchor a growing collection, this cushion shape bi color parti sapphire answers that need with clarity and confidence. We present a transparent 6.85 carat sapphire, measuring 10.65 by 9.42 by 6.64 mm, sourced from Ceylon Sri Lanka, and treated by heat to stabilize and enhance its natural tone. At The Natural Sapphire Company we understand that buyers want more than measurements, they want assurance that the gem will perform in light, in setting, and throughout a lifetime of wear. This sapphire meets those expectations with an intense color intensity, an eye clean clarity grade evaluated at eye level, and an excellent polish that gives the stone a refined mirror like surface. The cushion outline gives a soft, timeless silhouette, and the bi color parti character delivers two distinct yet harmonious hues that can be shown off every time it catches light.

The geometric faceting of this gem is the technical heart of what makes it shine, and it has been cut in a mixed brilliant style to maximize light play. The cutter has combined a brilliant facet arrangement on the crown with a more deliberate pavilion geometry to harvest light and send it back as scintillation and flash. Those crown facets create a lively surface sparkle, while the pavilion planes act as converging mirrors that focus and return light through the table. The careful angles and facet proportions are calibrated so that every ray contributes to brilliance, rather than leaking away, and the result is a dynamic interplay of fire and sparkle across the bi color zones. Because the sapphire is parti in color, the faceting not only amplifies brilliance, but also sculpts the way the yellow and green tones move and shift as the stone is tilted, making the color change part of the performance rather than a static trait. Excellent polish finishes those planes, eliminating surface disturbance, and preserving maximum light return, which is especially important in a larger gem where facet precision defines presence and personality.

For someone designing the ideal engagement ring, or seeking a showpiece for a collection, this sapphire offers both practical and aesthetic solutions. The 6.85 carat weight and the 10.65 by 9.42 by 6.64 mm proportions give a generous face up appearance, while the cushion shape with gently rounded corners provides a flattering footprint on the finger. The mixed brilliant cut balances intense sparkle with internal depth, meaning the stone reads as lively at a glance and rich when examined closely. Settings that keep the crown exposed will allow the sapphire to exhibit its full light performance, and choices in metal can further elevate the parti character. A warm yellow gold mounting will echo and deepen the yellow notes, while a cooler white metal can emphasize the green spectrum and add contemporary contrast. If you prefer a secure, low profile option for everyday wear, a well designed bezel can still allow light into the pavilion and maintain the stone as the focal point. At The Natural Sapphire Company we can advise on settings that preserve the stone s geometry and let its mixed brilliant faceting do the visual work.

Choosing this bi color parti sapphire means acquiring a gem that solves multiple desires at once, rarity, performance, and versatility. Its origin in Ceylon Sri Lanka ties it to a long heritage of beautifully colored sapphires, and the documented heat treatment is a widely accepted enhancement that improves color stability while retaining the natural character of the crystal. The eye clean clarity at normal viewing distance removes concern over visible inclusions that can interrupt sparkle, and the excellent polish confirms the stone was finished with the care necessary to ensure long term brilliance. If your need is for an engagement stone that will continue to enchant every day, or a collector s piece that stands out for both color and cutting, this sapphire is a definitive solution. Contact The Natural Sapphire Company for a private viewing, to request detailed photography or video, or to discuss custom settings, and we will guide you through the next steps with gemological expertise and attentive service.