Oval Cabochon Larimar Stone

This item is an oval-cut cabochon gemstone, appearing to be Larimar (a rare pectolite). The stone exhibits a high-gloss, polished finish with a smooth, domed surface characteristic of a cabochon cut. Its color palette is composed of variegated shades of sky blue, pale turquoise, and milky white, creating the 'sea-and-sky' mottled pattern unique to Larimar. There are visible inclusions of light brownish-tan matrix near the top right edge, which is common for natural specimens. The stone's dimensions appear relatively small, suitable for a ring or pendant mount. Under inspection, the surface shows no major fractures or chips, indicating the stone has been well-maintained or is newly cut. The craftsmanship is evident in the symmetrical oval shape and the consistency of the polish across the convex surface. Larimar is exclusively found in the Dominican Republic, making the origin of the raw material geographically specific. This particular specimen lacks internal dark spotting (dendrites) often seen in lower grades, suggesting a medium-to-high quality decorative stone. No maker's marks or signatures are present as it is an unmounted loose gemstone.

I have conducted a visual examination of the featured gemstone, identified as a natural Larimar (pectolite). The specimen displays a desirable 'sea-foam' mottling with distinct white and sky-blue zones. The cabochon cut exhibits symmetrical geometry and a high-luster polish, free of significant surface-reaching fractures or abrasions. While the stone lacks the deep 'volcanic' blue of AAA-grade specimens, its lack of dark carbon inclusions places it in a solid commercial-to-mid-range quality category. The presence of a small amount of tan matrix on the periphery supports the identification as natural material. The market for Larimar remains specialized due to its single-source origin in the Dominican Republic. Current retail trends for unmounted stones of this size (estimated 15-20mm) typically range from $2 to $5 per gram. This piece would serve as an excellent centerpiece for custom sterling silver jewelry, though its value is moderated by its common size and the presence of pale white patches which dilute the color saturation. Note: This appraisal is based strictly on high-resolution imagery. Visual inspection cannot definitively distinguish natural Larimar from certain blue glass imitations or dyed calcites, nor can it identify subsurface stabilization treatments. A definitive valuation would require a physical refractive index (RI) test and microscopic analysis to confirm internal structures. Official provenance or a certificate from a recognized gemological laboratory (e.g., GIA or IGI) would be necessary to verify the stone's origin and untreated status for insurance purposes.