2.06 Ct. Multi Color Cabochon Crystal Opal (Jelly Opal) from Ethiopia

This offering from The Natural Gemstone Company is a 2.06 carat Crystal Opal, Jelly Opal, presented as a round cabochon, with dimensions 8.99 by 8.73 by 4.96 millimeters. The cutting style is classic cabochon, exhibiting a high, well centered dome and a fully polished convex surface. Clarity is graded as eye clean at normal viewing distance, and the specimen shows medium color intensity with transparent to translucent bodytone typical of crystal opal material. The stone is untreated, with no enhancements, and is sourced from Ethiopia, a provenance known for producing lively, fine grained precious opal material. The polish quality is excellent, producing a smooth, mirror like finish across the dome that maximizes the opal s inherent play of color while maintaining crisp surface integrity at the girdle and lower pavilion junction.

From a lapidary and gemological perspective this cabochon reflects careful proportioning and execution. The average diameter of approximately 8.86 millimeters paired with a height of 4.96 millimeters yields a dome height to diameter ratio of approximately 0.56, categorizing the cut as medium to high dome, which is optimal for showcasing internal diffraction phenomena in crystal opal. The cutter preserved a consistent convex curvature, minimizing windowing and dark zones, while centering the play of color to produce balanced flashes across the crown. Optical behavior shows a predominantly green and blue play of color with secondary bluish violet and subtle pink wash, arranged in a patchy to broadflash pattern that responds dynamically to changes in illumination and viewing angle. The internal structure responsible for this play of color is the regular array of silica spheres typical of precious opal, and the material s translucency allows for internal layering effects that enhance depth and three dimensionality of color. Surface condition is pristine, with excellent polish eliminating lap marks and micro abrasions, and the girdle area is continuously finished to facilitate secure setting without introducing stress concentrations.

Practical considerations for setting and long term care are straightforward given the gem s physical properties. Opal typically ranges in hardness around five and a half to six and a half on the Mohs scale, and this crystal opal benefits from the cabochon form and substantial dome for improved resistance to impact, though care should be taken to avoid sharp blows and severe thermal shock. The absence of enhancements increases its desirability to collectors and connoisseurs seeking natural material, and the eye clean clarity makes it well suited to prominent bezel or half bezel settings that protect the girdle while allowing light to excite the internal play of color. For jewelry design recommendations consider low profile settings for rings to reduce leverage on the stone, and secure bezels or custom cups for pendants and earrings where the cabochon s dome can be shown off. Cleaning should be gentle, using warm water with mild detergent, avoiding ultrasonic cleaners and steam, and avoiding prolonged exposure to harsh chemicals and direct heat. For institutional or retail presentation The Natural Gemstone Company can provide detailed documentation of the dimensions, carat weight, clarity grading, and origin, and this piece will appeal to designers and collectors who appreciate the technical merits of proportion, polish, and the intrinsic optical phenomena that define quality crystal opal material.