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

This listing presents a transparent, rough shape bi color parti sapphire weighing 10.22 carats, with exact dimensions of 26.41 x 11.63 x 4.96 mm. The stone remains in its natural rough form, with no faceting or finished cutting style applied, and the cut field is listed as N A. It exhibits a light color intensity, and the parti or bi color character means that two distinct color zones are present within the same crystal, a trait that is prized for its individuality and design potential. The polish on the natural surfaces has been assessed as excellent, which speaks to the quality of the crystal faces and the ease with which a cutter can evaluate internal features and plan an optimal orientation. This piece is untreated, with no enhancement recorded, and it originates from Ceylon Sri Lanka, a classic provenance that is respected by connoisseurs and gemologists for producing sapphires with fine crystal habits and attractive color zoning.

From a clarity and grading perspective this sapphire is graded as very slightly included when evaluated at eye level, which indicates that any inclusions are minor and do not materially impede the stone s transparency or visual appeal to the unaided eye. Typical inclusions in sapphires from Ceylon include fine rutile needles silk and isolated mineral crystals, and these features can contribute to the gem s character without compromising durability. The long dimensions and thin profile as recorded provide important information for cutters and for buyers considering either preserving the specimen as a collector s rough or proceeding to a bespoke cut. For cutting considerations the parti coloration requires careful orientation to maximize the most appealing color contrast while retaining weight. Because the piece is transparent with excellent surface polish, a skilled cutter can often achieve a pleasing balance between color display and weight retention, or alternatively leave the specimen as a natural crystal for collectors who prize intact Ceylon rough.

For an educated buyer this sapphire offers multiple aspects of value. The absence of enhancement places it in the higher tier of natural material, because untreated sapphires from Ceylon are sought after for their provenance and their suitability for certification by major gemological laboratories. The bi color parti nature increases its rarity relative to single tone stones, especially when the color zoning is attractive and can be showcased in a final stone or in a bespoke jewel design. From an investment and collection perspective the 10.22 carat weight in rough form is substantial, and the recorded measurements allow accurate planning for expected yields and possible final shapes. The Natural Sapphire Company stands ready to assist with professional cutting advice, optional pre cutting imaging, and recommendations for independent gemological reports to document origin and natural state. Please contact us for higher resolution images, discussion about potential cutting options, or to request a formal assessment so that you may make a fully informed decision about this exceptional Ceylon parti sapphire.