21.93 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

One beautiful semi translucent 21.93 carat oval black moonstone is presented by The Natural Gemstone Company, a gem that combines substantial size with refined optical character, suitable for collectors and high quality design work. The stone measures 23.24 x 11.75 x 10.40 mm, and is expertly fashioned as a cabochon to enhance its surface luster and optical effects. Clarity is graded very slightly included, evaluated at eye level, indicating that the gem shows only minimal inclusions visible under careful unaided inspection, which does not detract from its overall appeal. The color intensity is vivid, giving the piece a strong, saturated presence, and the polish is described as excellent, a finish that maximizes reflective depth and tactile smoothness. There has been no enhancement, the gem is natural and untreated, and the origin is Ceylon, Sri Lanka, a source known for producing moonstones with excellent character and stable color profiles.

To an educated buyer, the interplay between cut, clarity, and polish is central to assessing value, and this moonstone exhibits favorable attributes across those categories. The cabochon cut is the traditional and preferred cut for moonstones, as it allows the sub surface phenomena to be appreciated without interference from facets, and it supports a continuous surface that emphasizes adularescence and sheen. Although black moonstone is typically studied for its dark body tone and subtle internal reflections, the vivid intensity reported here means the stone maintains a deep, consistent color while permitting a soft internal glow when illuminated. The clarity grade of very slightly included conveys that inclusions are present, but are minor in size and distribution, and they are not obtrusive under typical viewing conditions. This balance of strong color, clean presentation, and precise cabochon proportions is what distinguishes a commercial gemstone from one that commands premium recognition among gemologists and designers.

The origin of this moonstone, Ceylon Sri Lanka, contributes appreciably to its desirability and contextual value. Sri Lanka has a long established reputation for producing feldspar gemstones of fine quality, including varieties of moonstone that display reliable body color and appealing surface sheen. Provenance matters to the informed buyer because geological source can correlate with expected material behavior, stability, and historical market preference. A 21.93 carat oval cabochon in semi translucent material from Ceylon is relatively uncommon, particularly when delivered in an untreated state with excellent polish. Many comparable stones on the market may be stabilized, dyed, or subjected to heat treatments to alter tone or to mask surface characteristics, so the absence of enhancement in this example increases its standing for purists and collectors who prioritize natural state and integrity. For lapidaries and designers, the sizeable dimensions and uniform oval outline allow flexible use in statement rings, pendants, and bespoke pieces where a dominant central gem is desirable.

Practical considerations that affect long term satisfaction and preservation are equally important, and they are straightforward to manage with this specimen. Moonstone registers approximately 6 to 6.5 on the Mohs hardness scale, which means it is durable enough for many types of jewelry, but it benefits from protective settings and mindful wear to avoid abrasion and impact. The cabochon shape and excellent polish reduce the risk of surface chipping, yet designers often choose bezel settings or protective gallery constructions for everyday rings. Cleaning is best done with warm soapy water and a soft brush, avoiding harsh chemicals and ultrasonic cleaning which can stress internal structures in feldspar minerals. At The Natural Gemstone Company we stand behind our sourcing and grading practices, and we can provide additional details on provenance, recommended settings, and matching suggestions on request, enabling buyers to make informed decisions. For customers seeking a naturally beautiful and substantial black moonstone with clear documentation and careful handling advice, this 21.93 carat Ceylon cabochon represents a compelling option.