12.70 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

At The Natural Gemstone Company we understand that a gemstone is more than a number on a certificate, it is a living piece of the earth, prized for its character and provenance, and this 12.70 carat round shape yellow moonstone is a fine example of that principle. This translucent gem measures 13.86 x 13.78 x 9.12 mm, and has been hand fashioned into a classic cabochon cut to showcase its soft glow and adularescence, with a clarity grade of very slightly included evaluated at eye level, a light color intensity that reads as a warm, sunlit honey rather than an overstated hue, and an excellent polish that gives the surface a glass like sheen. There is no enhancement, so what you receive is wholly natural, unheated, untreated, and sourced from Ceylon, Sri Lanka, a region renowned for producing moonstones with pure character and reliable clarity. Compared to many mass market moonstones that are either dyed, filled, or over polished until they lose their natural depth, this stone retains an honest translucency and internal life that responds to the light with a gentle, ethereal shimmer, and its substantial 12.70 carat weight puts it in a category where size meets quality, making it a rare find among round cabochon moonstones on the market today.

The story of this moonstone begins in the gem rich soils of Ceylon, Sri Lanka, where generations of miners, cutters, and traders have developed a careful eye for quality. Small scale miners working in alluvial deposits hand collect the rough, washing gravel and pebbles to reveal potential crystals, then pass promising pieces to experienced sorters who judge color, translucency, and internal structure. This particular rough was chosen for its uniform yellow tone and translucence, then transported to a cutter who specializes in cabochons, a traditional form that best reveals the stone s internal glow. The cutter preformed the round shape, taking great care to preserve as much weight as possible while allowing the dome to present the moonstone s characteristic shimmer. Final stages included a meticulous sequence of grits to achieve the excellent polish, and a final quality check at eye level to confirm the very slightly included clarity grade and the absence of any surface treatments. Throughout this journey The Natural Gemstone Company maintained traceability back to the mine, and ensured that the stone was handled ethically and responsibly, preserving its natural state without enhancement so that its provenance from Ceylon Sri Lanka remains both a point of origin and a mark of authenticity.

When you compare this yellow moonstone to other options available in the market you quickly see where its strengths lie. Lab created alternatives may offer predictable color and zero inclusions, but they lack the lived in subtleties and natural adularescence that collectors and designers prize, and they cannot claim a natural, enhancement free origin. Treated or dyed moonstones may present louder color, but that intensity often masks the stone s internal chatoyance and can compromise long term value. Even compared to other natural moonstones, this 12.70 carat round cabochon stands out for balance, the practical dimensions of 13.86 x 13.78 x 9.12 mm make it ideal for a statement ring or a refined pendant, and the very slightly included clarity grade is a clear advantage over more heavily included stones that can read dull or cloudy once set. The light yellow color is unique without being garish, offering a warm, modern alternative to more common white or grey moonstones, and because it is unenhanced customers receive full value for what they pay, both in beauty and in integrity. For designers and collectors looking for a stone that blends rarity, ethical sourcing, and a ready to set shape, this moonstone is an exceptional choice. Contact The Natural Gemstone Company to learn about viewing options, recommended settings, and certification details, and let us help you place this rare Ceylon yellow moonstone where it will be appreciated and admired for generations.