1.29 Ct. Multi Color Semi-Black Opal from Australia

One beautiful semi black opal, 1.29 carat, freeform shape, multi color play, presents a rare combination of size, color intensity, and surface quality that makes it immediately attractive to the discerning buyer. This specimen measures 13.32 x 9.57 x 1.76 mm, with a polished cut that enhances its surface reflections, and it is graded as opaque with a clarity grade of eye clean, evaluated at eye level. The color intensity is recorded as intense, and the polish is assessed as excellent. The opal is of Australian origin, and there has been no enhancement applied, a trait that is increasingly valued by collectors and custom jewelers. The Natural Gemstone Company offers this stone with full transparency about its characteristics, and with provenance that supports its classification as a semi black opal, a category prized for the way its darker body tone deepens and vibrates with spectral color.

To an educated buyer, the most important aspects of an opal are its play of color, body tone, clarity, and any treatments or enhancements that may have been applied. This opal shows a lively, multi directional play of color against a muted, darker ground, consistent with semi black material, and the intense color intensity indicates strong, saturated flashes that will remain visible under varied lighting conditions. The eye clean clarity means that at normal viewing distance, no inclusions or surface pits distract from the color, a critical attribute when the stone will be set close to the eye in jewelry. The excellent polish is also significant, because opal is a hydrated amorphous form of silica, and surface finish influences both the apparent depth of color and the stone s resistance to micro abrasion. Because this opal has not been treated or impregnated, you are seeing natural play of color and natural body tone, which is a premium attribute for connoisseurs who prioritize authenticity and long term value.

The freeform shape and the stone s specific dimensions make it particularly well suited to custom jewelry, because freeform opals allow designers greater freedom to create settings that complement the unique outline and color zoning of the gem. At 13.32 mm in length and 9.57 mm in width, the opal sits in an ideal size range for a statement ring or a pendant that balances presence with wearable comfort, and the thickness of 1.76 mm suggests that the cabochon is moderately thin, which invites design choices that protect the stone while showcasing its surface. For rings, a protective bezel or a low profile bezel cup will secure the edge and reduce the risk of chipping, while allowing the intense color flashes to be viewed from multiple angles. For pendants and earrings, a bezel or custom gallery with contrasting metal will enhance the semi black ground, making the reds, greens, and blues read with greater vibrancy. Designers can also exploit the asymmetry of the freeform to create modern settings that follow the stone s silhouette, or to orient the color play so that it interacts dynamically with the wearer s movement. The multi color palette of this opal pairs beautifully with both warm and cool metals, with yellow gold emphasizing reds and oranges, and white gold or platinum accentuating blues and greens, giving buyers and jewelers practical options to match the piece to a bespoke aesthetic.

When evaluating provenance and long term care, the Australian origin of this semi black opal is an important quality marker, because Australia remains the source for many of the most stable, vividly colored black and semi black opals. The absence of enhancement, confirmed by our assessment, means the stone has not been stabilized, dyed, or otherwise modified, which enhances its appeal to collectors focused on natural material. From a practical perspective, opal requires mindful setting and care, because its hydrated structure makes it sensitive to abrupt temperature and humidity changes, and because thin edges can chip if left exposed. We recommend settings that offer edge protection, routine cleaning with mild soap and water and a soft cloth, and avoidance of ultrasonic cleaners or harsh chemicals. At The Natural Gemstone Company we document our stones with clear measurements, carat weight, clarity grading at eye level, and origin, and we are available to consult with your jeweler or our in house design team on the best mounting approach for longevity and visual impact. If you are commissioning a custom piece, we can provide high resolution images, orientation guidance for the strongest color display, and suggestions for metal choice and setting style so that the resulting jewelry highlights the intense color and natural character of this semi black opal.