1.39 Ct. Multi Color Black Opal (Dark Opal) from Australia

This specimen is a Black Opal also known as Dark Opal, one opaque 1.39 carat fancy shape gem originating from Australia, presenting dimensions of 10.43 by 6.43 by 3.14 millimeters. The cutting style is Tablet, executed to preserve the maximum play of color from a relatively thin opal seam while maintaining a stable profile for mounting. The tablet cut produces a broad, low domed surface with minimal crown height, which in this instance accentuates surface color patches and broad flash rather than faceted sparkle. Color intensity is classified as intense, with clearly saturated green and blue dominance complemented by warm red and orange flashes in select orientations. The surface finish is an excellent polish, free from polish pits or abrasions, and the piece is unenhanced, so no dyeing, impregnation or heating has been applied. The body tone is dark, providing a high contrast background that amplifies the diffraction colors typical of premium Black Opal material.

From a technical optics perspective this multi color Black Opal demonstrates well defined play of color arising from ordered silica sphere diffraction within the opal matrix. The tablet cut is intentionally shallow to align the plane of color with the viewing surface, maximizing apparent brightness at common viewing angles. At 3.14 millimeters depth the stone retains sufficient thickness to avoid light leakage that can desaturate color, while minimizing bulk for low profile settings. The irregular fancy shape is advantageous for bespoke designers as it allows for asymmetric mounting that showcases dominant color patches. Color distribution is patchy to broad rather than pinfire, indicating larger coherent domains in the internal structure and producing more stable color across viewing angles. The strong green blue palette with occasional red flash suggests multiple diffraction orders are present, a hallmark of high quality Australian Black Opal.

Cutting and finishing techniques were chosen to balance material yield with optical performance. The tablet cutting approach requires precise control of lap curvature and sequential grit progression to achieve a uniform polish across a broad plane without introducing curvature induced banding. The excellent polish observed is a direct result of progressive micron stage abrasive finishing and final optical compound lapping, producing a uniform specular reflection that does not mask the internal color. Edge geometry has been maintained with a gently tapered profile, permitting secure bezel seating while limiting exposed brittle margins. Given its opaque to translucent backing and natural dark body tone there is no need for backing or doublet construction, preserving full natural material for collectors who prioritize unenhanced specimens. The dimensions 10.43 by 6.43 millimeters yield a length to width ratio well suited for rings and pendants, while the 1.39 carat weight assures a noticeable presence without excessive bulk.

In application this Black Opal offers strong versatility, performing elegantly in both casual and formal contexts when set with complementary metals and mounting styles. For rings a low profile bezel or partial bezel with minimal prong support will protect the tablet edges while exposing the broad face for optimal color viewing. For pendants and earrings the tablet shape can be oriented to emphasize dominant color fields, and for inlay work the shallow profile integrates seamlessly into metal channels. Care considerations follow standard opal handling protocols, recognizing opal hardness in the mid range of the Mohs scale and sensitivity to rapid temperature change, aggressive solvents and ultrasonic cleaners. Cleaning with mild soapy water and a soft brush is recommended, and secure setting to prevent edge knocks will preserve the excellent polish. The Natural Gemstone Company confirms Australian origin and no enhancements, and we can provide additional imaging and mounting guidance to ensure this Black Opal is showcased to its technical and aesthetic advantage.