2.54 Ct. Rainbow Moonstone from Ceylon (Sri Lanka)

This pear shape rainbow moonstone offered by The Natural Gemstone Company is a remarkably rare example in both size and color, weighing 2.54 carats with dimensions of 13.63 x 7.92 x 4.72 mm. The gem is faceted with a mixed brilliant cut, a choice that is uncommon for moonstones which are more frequently seen as cabochons, and this cutting style has been executed to emphasize both light return and the internal adularescence. The clarity grade is very very slightly included evaluated at eye level, which means the stone appears clean to unaided vision while retaining minute internal structure that contributes to its optical character. Color intensity reads as light, but what makes this piece exceptional for collectors is the purity of the base tone combined with distinct blue to pearly flashes, an outcome that is seldom achieved in faceted stones of this carat weight from Sri Lanka. The polish is excellent, and there has been no enhancement, reflecting a natural, untreated specimen from Ceylon Sri Lanka, a source renowned for producing moonstones with fine optical effects.

From an educational perspective the adularescence of this moonstone presents as a soft, floating glow that seems to move across or beneath the surface when the gem is tilted or when light shifts, producing ethereal blue and white flashes that travel from the pointed end toward the rounded base. This phenomenon is caused by light scattering from microscopic layers within the feldspar structure, and in this stone the effect is both distinct and coherent despite the faceted surface, which speaks to the cutter skill in aligning facets with the internal lamellar orientation. For the informed buyer this gem represents value for several reasons, including its uncommon faceting, clean eye level clarity, and the larger than usual size for a rainbow moonstone that still maintains a pleasing light color intensity. Its excellent polish enhances wearability and setting potential, making it an ideal centerpiece for a fine ring or pendant where the adularescence can be showcased, and collectors will note the rarity of finding a natural, unenhanced, faceted rainbow moonstone of this scale and quality.