121.05 Ct. Moonstone from Ceylon (Sri Lanka)

This exceptional transparent green moonstone weighs 121.05 carats and measures 36.26 by 26.87 by 25.14 millimeters, presented in a fancy shape with a mixed brilliant cut and an excellent polish, with no enhancement. The clarity has been evaluated at eye level as very very slightly included, which means that under typical viewing conditions the pavilion and crown present with exceptional visual purity, and the few inclusions present do not interrupt the moonstone quality or its characteristic adularescence. The color intensity is medium, offering a true green hue that is lively yet balanced, neither washed out nor overly dark, and the combination of transparency and the mixed brilliant cutting style allows for superior light return and internal glow. Origin is Ceylon, Sri Lanka, a provenance that matters to educated buyers because Sri Lankan moonstones often display a rare combination of translucency, stable hue, and a clean body color that supports and amplifies the stone light phenomena. The Natural Gemstone Company presents this gem as a museum quality specimen ready for bespoke jewelry projects or for a collection that values natural, untreated materials.

When comparing the hue and tone of this Ceylon green moonstone to gemstones from other famous locations, clear distinctions emerge that help contextualize its rarity and appeal. Compared to Colombian emeralds which typically show a vivid, bluish green with high saturation, this moonstone exhibits a softer green with a cooler, more silvery sheen due to its adularescence, offering a subtler expression of green rather than the deep saturated green of Colombian specimens. Versus Zambian emeralds, which tend to carry a darker forest tone and higher body color depth, the moonstone remains in the medium intensity range, presenting a luminous face up color rather than a dense body tone. Burmese jadeite commonly displays an intense, almost neon green that is prized for its concentration of color and translucency, and the green moonstone differs by offering a gentler, more ethereal green that shifts under different lighting angles, an effect not characteristic of jadeite. If compared to Brazilian aquamarine or Madagascan tourmaline, which can show blue green tendencies, this moonstone maintains a purer green orientation combined with the classic moonstone glow, creating an appearance that is both botanical and lunar. In contrast to moonstones from India, which often show a more grayish base and less transparency, Sri Lankan moonstones like this piece are known for cleaner body color and superior clarity, and compared to specimens from Madagascar which can be paler and more translucent with a cool blue sheen, this stone carries a more distinctly green adularescence and medium tone that reads as more saturated and visually present in a variety of lighting conditions.

For the educated buyer and connoisseur, several objective factors make this moonstone highly valuable and investment worthy. The sheer scale at 121.05 carats places it in a very limited class of large, transparent moonstones that are suitable for significant display or high end bespoke settings. The mixed brilliant cut is a technical choice that enhances both scintillation and adularescence, creating an interplay of internal fire and the soft moon glow that collectors prize. Very very slightly included clarity at eye level denotes a gem that will register as essentially clean to most viewers, preserving brilliance and allowing the green hue to remain unobstructed, and the lack of any enhancement confirms that the gem is in its natural state, a key factor for long term value stability. Provenance from Ceylon adds a layer of desirability, as Sri Lankan material has a long historical reputation for producing the finest feldspar gemstones with attractive color and clarity. Practical considerations also support the stone value, the excellent polish maximizes the aesthetic appeal, and the dimensions enable dramatic yet wearable designs. The Natural Gemstone Company can assist with independent gemological certification and guidance on setting and care, noting that moonstone requires considerate handling due to its relative hardness and cleavage characteristics, and should be secured in protective settings and cleaned with mild soap and water rather than abrasive or ultrasonic methods. For collectors seeking a rare, naturally colored, large transparent moonstone with verifiable Ceylon origin and museum quality attributes, this piece represents a compelling opportunity.