1.21 Ct. Moonstone from Madagascar

This item is a natural rainbow moonstone of 1.21 carat, presented in an oval shape with precise dimensions of 7.74 x 5.75 x 5.21 mm. The gem is semi transparent, and it has been faceted with a mixed brilliant cut to balance scintillation and the characteristic internal glow of moonstone. Clarity is graded as slightly included when viewed at eye level, a quality typical of naturally formed feldspar that imparts character without affecting the stone s overall visual performance. Color intensity is medium light, allowing the adularescent shimmer to show clearly against a mostly colorless body. The polish is excellent, providing crisp facet junctions and reflective surfaces that enhance both brilliance and flash. No enhancement has been performed on this gem, and the material is sourced from Madagascar, a provenance known for producing competitively fine specimens of rainbow moonstone.

Optically, this stone demonstrates the phenomena that define moonstone appeal, including a soft adularescence and subtle spectral flashes that can present as blue, violet, and faint rainbow tones under changing light. The mixed brilliant cut optimizes light return through a combination of crown facets that reveal the adularescent sheen and pavilion facets that channel internal reflections, producing a lively yet refined display. The oval outline offers an elegant balance between length and width, making it adaptable for a variety of mounting styles and allowing light to travel across the gem surface in a way that sustains visual interest through movement. The medium light body color supports contrast without absorbing adularescent rays, and the excellent polish maintains facet clarity that translates into consistent sparkle under both diffuse and direct illumination.

From a practical standpoint this moonstone is suitable for fine jewelry with considered design and appropriate protective measures. As a feldspar mineral it has a Mohs hardness of approximately 6 to 6.5, and it may exhibit perfect cleavage in one or more directions, which makes it more vulnerable to sharp impacts than more robust stones. For daily wear settings a bezel or partially bezel protected mounting is recommended to reduce exposure to knocks and to help stabilize the stone against sudden pressure. Ultrasonic and steam cleaners are not advised for moonstone because of potential internal stress and cleavage sensitivity. Routine cleaning with warm water, a mild detergent, and a soft brush will preserve surface luster, and storage in a separate compartment or a soft pouch will minimize abrasion from harder gems and metals. When handled with simple care this specimen will retain its polished finish and optical charm for many years.

The natural origin and absence of treatments contribute to the long term visual stability and collector appeal of this rainbow moonstone. Stones treated by heating or irradiation can experience alterations over time, whereas an untreated example from Madagascar, such as this, will hold its natural color balance and adularescent properties indefinitely under proper care. The Classic oval form and mixed brilliant faceting reflect a versatile aesthetic that remains relevant across changing trends, and the slightly included clarity gives the gem a distinctive and authentic character that many connoisseurs prefer. At The Natural Gemstone Company we record provenance and gem characteristics to support informed selection and long term satisfaction. In considered settings that both protect and showcase the stone, its natural beauty will continue to captivate, revealing subtly shifting flashes of color and internal light that reward repeated viewing across years of wear.