3.75 Ct. Semi-Black Opal from Australia

Introducing a striking Semi-Black Opal from The Natural Gemstone Company, a translucent, multi color gem that captures attention with its vibrant play of color, weighing 3.75 carat and measured precisely at 15.17 x 9.15 x 4.21 mm. This oval shaped stone is fashioned in a tablet cut that maximizes the surface face, allowing the internal fire to breathe across its broad expanse. The clarity grade is very slightly included, evaluated at eye level, which means you will enjoy a clean appearance to the naked eye, while any minor character marks are natural reminders of the gem origin. The color intensity is intense, and the polish is excellent, producing a smooth and lustrous surface that enhances the shimmering greens, blues, and occasional violet flashes. This opal has no enhancement, and it is sourced from Australia, a region renowned for producing some of the finest opals in the world. As with every gem from The Natural Gemstone Company, this Semi-Black Opal has been selected for its combination of beauty, integrity, and presence, a perfect choice for collectors and designers who seek a gem that tells a story the moment it is seen.

Observe the most captivating qualities of this opal as it moves under light, the play of color appears to float within the stone, shifting from sea green and neon green to electric blue and soft violet depending on the angle. The tablet cut helps to broaden the visual field, producing large patches of color and dramatic color flashes that seem to come from just below the surface. Because the body is translucent rather than fully opaque, the hues have depth and a sense of motion, making the gem lively and engaging under daylight and warm indoor lighting alike. The intense color intensity means that the color carriage is strong and easily observed, even in a simple solitaire setting, while the very slightly included clarity gives the opal character without distracting from its overall visual impact. For gem enthusiasts, the combination of a semi dark body tone with vivid play of color is highly desirable, as it balances the best aspects of darker black opals with the luminous charm of lighter crystal opals. This particular piece stands out for its palette harmony, where greens dominate with complementary blues and purple accents, a combination that presents beautifully to the eye and photographs exceptionally well.

When considering design and use, the stone size and shape lend themselves gracefully to a variety of jewelry applications, from a classic ring center to an elegant pendant or statement pair of earrings. At 15.17 mm by 9.15 mm, the oval tablet presents a broad aesthetic that reads larger on the finger or in a pendant than a typical cabochon of similar weight, making it an ideal focal point for a bespoke setting. Because opal is a softer gem relative to sapphires and diamonds, we recommend protective settings that reduce exposure to knocks and abrasion, such as a bezel or a raised gallery with secure prongs. Metals like 18 karat yellow gold bring warmth to the green and violet play of color, while white gold and platinum provide a contemporary contrast that enhances the cooler blue flashes. Accent stones such as small diamonds or green sapphires can be used sparingly to frame the opal without competing with its natural spectacle. For care, avoid exposure to household chemicals and abrasive cleaners, remove opal jewelry before heavy activity, do not use ultrasonic or steam cleaners, and store the piece separately in a soft pouch, ideally with a slightly humid environment if long term storage is anticipated to protect against drying and crazing. These simple steps will preserve the intense color intensity and excellent polish that make this gem special.

At The Natural Gemstone Company we take pride in offering ethically sourced, untreated gems of exceptional beauty, and this Australian Semi-Black Opal is no exception. Our team carefully evaluates each stone for cut, clarity, color, and overall integrity, and we are happy to provide detailed information about origin and enhancement status upon request. We can assist in arranging professional mounting in the style you prefer, recommend qualified jewelry designers, and provide secure shipping and insured delivery to ensure the gem arrives safely. For collectors who value traceability and condition, we can document the clarity grade of very slightly included, the tablet cut, the precise dimensions of 15.17 x 9.15 x 4.21 mm, and the confirmation of no enhancement, so you can buy with confidence. If you would like additional photos, a video under different light, or help visualizing the opal in a custom setting, please contact us, and one of our gem specialists will guide you personally through sizing, design, and care. This Semi-Black Opal is an invitation to own a piece of natural artistry, a gem that captures light and imagination, offered to you by The Natural Gemstone Company with the attention and service that discerning buyers deserve.