1.38 Ct. Cabochon Boulder Opal from Australia

This exquisite Boulder Opal from Australia is a captivating example of natural beauty and thoughtful cutting, a 1.38 carat oval shape multi color opal with dimensions 10.34 by 7.01 by 2.92 mm, presented in a classic cabochon cut. The gem is opaque with medium color intensity and an excellent polish that gives the surface a mirror like sheen under light. As an enhancement this stone is a doublet, skillfully assembled to showcase the thin yet vibrant opal layer against a dark backing that increases contrast and visibility of color. The play of greens and flashes of complementary hues dance across the surface as you turn the stone, and the oval silhouette and cabochon dome maximize the visual impact for rings, pendants, and bespoke settings. At The Natural Gemstone Company we present this opal with full transparency about its doublet construction and Australian origin, offering a gemstone that brings natural formation and lapidary skill together in a wearable art piece.

What sets this Boulder Opal apart from other gemstones and opal types on the market is its internal microstructure and the way the cut and backing amplify that structure. Opal produces its signature play of color when uniform silica spheres are stacked in an ordered grid, creating microscopic gaps that diffract and interfere with incoming light. This diffraction separates light into distinct flashes of color that move and shift with perspective, a phenomenon that glass simulants, common opal, and most synthetics simply cannot reproduce with the same depth and natural randomness. In a doublet the genuine opal layer is preserved and presented against a dark backing that enhances the spectral play, producing brighter and more contrasting flashes than the same thin slice would show on its own. The cabochon cut and the excellent polish serve a functional as well as aesthetic purpose, smoothing the surface so light enters and exits cleanly, and allowing internal diffraction to be seen without surface scattering. Compared to solid precious opal the doublet offers a better value for certain material thicknesses, because it uses a thin but high quality color bar without sacrificing brilliance, and compared to synthetic options this natural Boulder Opal retains the subtle irregularities and organic character collectors and designers prize.

Choosing this Boulder Opal from The Natural Gemstone Company offers advantages in quality, value, and uniqueness that help you make an informed purchase. The medium color intensity and multicolor pattern deliver an elegant balance, suitable for designs where play of color should complement rather than overpower the overall piece. As a boulder opal doublet it combines natural Australian provenance with practical durability and affordability, making it an excellent choice for a statement ring or a refined pendant. For settings we recommend protective bezel work for daily wear, and a slightly raised profile for occasional show pieces to allow the light that creates the play of color to reach the stone freely. Care is straightforward, avoid prolonged exposure to water and harsh chemicals, and do not use ultrasonic cleaners, because the layered construction requires gentle handling. At The Natural Gemstone Company we stand behind the description and origin of every gemstone we offer, and this Australian Boulder Opal doublet is presented with honest detail so you can feel confident in its value and character, a superior choice for anyone seeking a naturally vibrant opal that combines rarity, beauty, and intelligent lapidary presentation.