2.13 Ct. Yellow Rough Sapphire Crystal from Ceylon (Sri Lanka)

This translucent 2.13 carat yellow sapphire from Ceylon Sri Lanka measures 19.33 x 3.77 x 3.51 mm, and presents in a rough crystal cut with an excellent polish. Its clarity is graded very slightly included at eye level, a grade that will satisfy the educated buyer who values natural character with minimal impact on visual performance. Color intensity is light, offering a warm, sunny hue that reads as classic Ceylon yellow, and the stone is free of any enhancement, a significant factor for collectors and connoisseurs seeking untreated natural material. At The Natural Sapphire Company we emphasize provenance and integrity, and this sapphire carries the geological pedigree of Sri Lanka, a source renowned for producing sapphires with good transparency and lively tone. The dimensions and rough crystal silhouette make it ideal for bespoke settings that celebrate the stone as a natural crystal, while the excellent polish ensures maximum surface brightness and refined hand feel.

When evaluating reflective qualities, corundum sits in a distinct optical space, with a refractive index around 1.76 to 1.77 and a characteristic adamantine to strong vitreous luster, a combination that delivers brisk light return and lively scintillation under facet play. This yellow sapphire, even in a rough crystal cut, demonstrates superior brilliance and durability compared with common yellow gems such as citrine and yellow beryl, which have lower refractive indices and therefore softer light performance. Compared with yellow topaz, which has similar visual warmth, sapphire offers greater hardness and more persistent light return over time. In contrast to White Opal, which shows a diffuse play of color and a refractive index near 1.44 to 1.46, the sapphire exhibits directional brilliance and sharper facet contrast rather than opal like internal color fire. Against blue or padparadscha category sapphires, a light yellow stone will show less depth of color saturation, but its reflective quality remains competitive because of corundum crystal optics and the excellent polish applied. For the discerning buyer who values untreated origin graded material, this Ceylon yellow sapphire combines natural charm, reliable clarity grading, and strong reflective performance, making it a compelling choice for collectors and custom jewelers alike.