1.86 Ct. Ruby from Burma (Myanmar)

This cushion shape, transparent ruby weighs 1.86 carat, and measures 7.02 x 6.45 x 3.88 mm. The cutting style is a mixed brilliant cut, which combines a brilliant facet arrangement on the crown with modified pavilion facets to balance saturated color with lively light return. The table and crown facets are proportioned to enhance face up brilliance while the pavilion depth yields a depth of approximately 57.6 percent, a proportion that supports strong internal reflection without excessive windowing. Clarity is described as very slightly included when evaluated at eye level, indicating minor internal characteristics that do not materially interrupt light transmission or the gem sillhouette when set. Polish is excellent across facet junctions and girdle, preserving crisp facet edges and maximizing specular reflection. Origin is Burma Myanmar, and the ruby has been heat treated, a stable and commonly accepted enhancement that improves color uniformity and clarity without altering the gemological identity of the corundum. The Natural Ruby Company presents this stone as a technically refined example of classical Burmese material, with rigour in cutting and finishing that speaks to experienced gem buyers.

Color is a pinkish red with intense color intensity, a balance between vivid saturation and slightly lighter tone that yields a lively appearance. The mixed brilliant cut intentionally preserves chroma within the pavilion while opening the crown to generate scintillation, producing a dynamic visual character as the viewing angle changes. In bright natural daylight, particularly under northern daylight or daylight balanced LED sources, the stone reads as a pure and transparent pinkish red with even color distribution across the table and crown facets, highlights appearing as brighter pink flashes against a deeper red body color. Under warm incandescent light, the stone will tend to skew slightly warmer, emphasizing red saturation and yielding richer, warmer red flashes driven by increased long wavelength illumination. In cooler artificial light, particularly high CRI cool white LEDs, the stone can show crisper, slightly pinker highlights, with facet contrast becoming more pronounced. The very slight inclusions act as minor scatterers that add subtle pinfire without clouding, so scintillation remains distinct and brisk across lighting conditions.

When considering jewellery application and optical performance, the mixed brilliant cut and precise facet polish permit strong performance in both open and closed mountings, though an open head or prong setting will maximize brightness and color transmission. Face up appearance benefits from the shallow to moderate depth, enabling the stone to present its intense color at standard viewing distances while maintaining light return for sparkle. In direct sunlight, expect increased brilliance and vivid red flashes as specular reflections from the crown facets flash against the rich body color, creating pronounced scintillation. In low ambient light, the intense saturation preserves visible color, producing a more velvety, concentrated red impression with fewer bright flashes. Heat treatment is stable and will not affect routine wear, however care for the gem is recommended by avoiding extreme rapid temperature changes and harsh chemical exposure to preserve polish and mounting integrity. The Natural Ruby Company provides this gemstone with full disclosure of origin and enhancement, and can advise on ideal setting options and complementary metal choices to optimize the optical balance between color saturation and light performance.