1.51 Ct. Boulder Opal from Australia

One elegant and confident specimen from our collection is a beautiful opaque boulder opal weighing 1.51 carats, presented in a cushion shape that measures 10.05 x 5.37 x 2.75 mm. This piece is tablet cut to maximize the surface play and to present a broad, even face for the color to shine, and it carries an intense color intensity that leaps into life as the stone moves. The gem shows a multi color display across the face with dominant greens and blues and subtle flashes of other hues, all sitting on the natural ironstone backing that defines a true Boulder Opal. The surface displays an excellent polish, giving a silky, reflective finish that amplifies the gem s natural fire, and the stone is unenhanced with no treatments applied, coming to you in completely natural condition from Australia, the classic and respected origin for high quality boulder opal.

Visually this opal is a study in vibrant movement and depth, with broad brush strokes of green and blue that seem to flow across the tablet cut surface and create a painterly effect that is both modern and timeless. Because the opal is a boulder variety, the ironstone base is visible at the edges and on the pavilion, which adds a natural contrast and makes the color appear even more saturated by comparison. The cushion profile combined with the tablet cut offers a generous surface area for color play while retaining a low profile, which makes this gem ideal for designs that require a stable seat within the setting. In natural light and under direct light the stone will reveal new facets of color, and indoor lighting will bring out interesting subtleties, so the wearer will enjoy a shifting performance that is never the same twice. At 1.51 carats the stone is substantial enough to be the focal point of a custom ring or pendant, yet compact enough to be incorporated into refined everyday pieces, and the exact dimensions of 10.05 x 5.37 x 2.75 mm make it straightforward to set in a bezel, a flush mount, or a bespoke frame that highlights the tablet cut face.

As specialists with deep experience in gemstones, we at The Natural Gemstone Company recommend this boulder opal for collectors and designers who value authenticity, natural character, and dramatic color play. The natural ironstone backing of a boulder opal gives it additional stability compared with some other opal types, and because this gem has not been enhanced it retains the full natural provenance and material integrity that discerning buyers seek. For jewelry use it performs beautifully in low profile bezel settings and in custom mounts where the ironstone edge can be incorporated into the design as a contrasting element, and because of the cushion shape and tablet cut it is especially suited to pendants, artisan rings, and inlay work. Care is straightforward, and simple measures such as avoiding harsh chemicals and extreme heat will keep the polish and play of color at their best, while routine gentle cleaning with a soft cloth will remove surface oils and maintain brilliance. If you are designing a piece, our team can advise on compatible metal choices and setting styles, as warmer metals like yellow gold will emphasize the green and gold flashes, while white metals will create a cooler contemporary aesthetic that highlights the blue tones.

When you choose this opal from The Natural Gemstone Company you are selecting a natural Australian boulder opal that has been evaluated and presented with transparent details so you can design with confidence. We stand behind our gems with clear information about origin, treatment status, cut, and measurements, and we are happy to assist with custom design advice or secure shipping and packaging options. This 1.51 carat cushion shape multi color boulder opal, with its tablet cut, intense color intensity, excellent polish, and natural ironstone character, represents a rare and expressive choice for anyone seeking an opal that combines bold visual impact with genuine natural provenance. If you would like to proceed with this gem or request additional views and mounting suggestions, please contact our team and we will guide you through the next steps to bring this remarkable opal into your collection or into a finished jewelry creation.