6.55 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

I am pleased to present this exquisite blue flash moonstone from The Natural Gemstone Company, a semi translucent oval cabochon weighing 6.55 carats, with dimensions of 15.80 x 8.55 x 6.13 mm, carefully cut and polished to showcase its best optical qualities. This gem displays a delicate blue adularescence that glides across the surface when tilted under light, creating a soft lunar sheen that draws the eye. The cabochon cut enhances that floating blue flash, while the excellent polish gives the surface a mirror like smoothness that amplifies the gem's internal glow. Clarity is graded as eye clean at eye level, which means the stone presents a clean, luminous face to the wearer without visible inclusions to distract from the play of light. Color intensity is medium, providing a refined balance between a subtle body tone and a pronounced blue flash, ideal for jewelry that calls for elegance rather than bold color.

As a salesperson and gem specialist, I recommend this moonstone for designs that allow the adularescence to be seen from multiple angles, such as a central ring stone, a pendant where movement helps the flash to appear, or a bespoke pair of earrings with matching cuts. The oval shape and comfortable proportions make it well suited to both classic and contemporary settings. A bezel or soft claw setting will protect the gem while letting the light interact with its surface, and the cabochon profile gives a pleasing tactile feel against the skin. Given the 15.80 x 8.55 mm size, this moonstone will read as a significant presence on the hand when set as a ring, and as a luminous focal point in a pendant that catches light as you move. The combination of eye clean clarity and excellent polish ensures the adularescence is uninterrupted, producing consistent flashes of blue without competing internal reflections, which makes the stone especially desirable for collectors and designers who value clean optical performance.

This moonstone originates from Ceylon, Sri Lanka, a source long admired for producing high quality feldspar gems with attractive adularescence. The provenance contributes to the gem's story and appeal, connecting it to classic sources of fine gemstones. Importantly, this specimen has no enhancements, which means the color and optical effects are entirely natural, offering a purer expression of moonstone character and an assurance that what you see is the gem in its natural state. Natural, unenhanced moonstones with strong, even adularescence and eye clean clarity are less common, and they command attention from buyers who appreciate authentic gemstones. For pairing suggestions, consider surrounding the moonstone with small white diamonds to accentuate the blue flash, or use soft rose gold to add a warm contrast that deepens the gem's serene glow. White gold or platinum will give a cooler, contemporary look that harmonizes with the blue highlights, and delicate halo settings can elevate the perceived size while preserving the moonlike quality of the stone.

Caring for moonstone requires a gentle approach, because feldspar has a hardness of about 6 to 6.5 on the Mohs scale and can be sensitive to sharp knocks and thermal shock. Avoid ultrasonic cleaners and steam cleaning, and protect the stone from repeated hard impacts and prolonged exposure to harsh chemicals. Clean your moonstone with warm soapy water and a soft brush, dry it with a lint free cloth, and store it separately to prevent abrasion from harder gems or metals. At The Natural Gemstone Company we stand behind the authenticity and natural origin of our gemstones, and we are happy to provide additional information, high resolution images, and assistance with custom settings. If you would like to see the stone in person, discuss mounting options, or request a formal report, please contact us and we will guide you through the best choices for showcasing this beautiful blue flash moonstone.