1.38 Ct. White Cabochon Moonstone from Ceylon (Sri Lanka)

This is a translucent 1.38 carat pear shape white moonstone, measured at 8.67 x 7.16 x 3.76 mm, executed as a cabochon with a high dome and a smooth, symmetrical outline. The dome height of 3.76 mm is proportioned to maximize adularescence, producing a soft, floating sheen across the near colorless body color. Clarity is graded as slightly included at eye level, with internal plate like structures typical of feldspar that contribute to the characteristic adularescent effect rather than detract from it. The polish is excellent, yielding clean specular highlights on the dome and a tactilely smooth girdle and pavilion junction. No enhancements have been applied, and the gem is of Ceylon Sri Lanka origin, which is consistent with a fine balance of translucency and spectral flash due to lamellar twinning in the orthoclase feldspar matrix.

For custom work, consider settings and complementary stones that emphasize the moonstone adularescence while providing precision contrast. A white metal mounting such as platinum or 18 karat white gold will emphasize blue or silvery flashes, while 18 karat yellow gold will warm the near colorless body and produce a classic, soft contrast. A frameless bezel with a minimal seat or a thin prong collet will allow light to interact with the dome, preserving the internal sheen, whereas a deep closed back will mute translucency. Faceted accents such as small brilliant cut diamonds in 1.0 to 1.8 mm sizes will add scintillation and outline the pear silhouette without overwhelming the cabochon surface. For color contrast, pair with medium to deep blue sapphires to echo blue adularescence, with pale aquamarines to harmonize cool tones, or with soft pink sapphires to introduce a gentle warm counterpoint. Tapered baguette sapphires on the shoulders will elongate the finger line when set as a ring, and a single bezel set pear moonstone flanked by two round brilliant diamonds provides a balanced three stone composition for an elegant ring or pendant.

From a craftsmanship perspective, allocate a precisely machined seat to accommodate the domed profile, with a subtle undercut to secure the stone without excessive pressure on the girdle. Use burnished bezel edges for a secure mechanical hold when durability is required, or fine shared prongs when optical openness is the priority. The Natural Gemstone Company can advise on gallery design, metal finish selection, and exact melee sizes to create a bespoke piece that respects the natural character of this Sri Lankan moonstone, and that combines technical precision with aesthetic balance.