0.72 Ct. Green Sapphire from Ceylon (Sri Lanka)

The Natural Sapphire Company presents a single transparent green sapphire of refined proportions, weighing 0.72 carat. The stone is cut to an oval outline, with measured dimensions of 5.80 x 5.12 x 2.73 mm. The cutter employed a mixed brilliant faceting scheme, combining a faceted crown with brilliant style facets and a pavilion pattern that balances larger and smaller triangular facets into a coherent optical array. The clarity is described as very very slightly included evaluated at eye level, giving the gem a clean face up appearance under typical viewing conditions. Color is of medium intensity, registering as a clear olive to slightly yellowish green depending on light, and the surface shows an excellent polish. The sapphire is natural and has received no enhancement, and its documented origin is Ceylon Sri Lanka.

The geometric faceting of this mixed brilliant oval is the defining technical attribute that controls its light performance. The cutter has established a modest table facet relative to the crown height, which permits the crown facets to act as efficient prisms for incoming light. Those crown facets break and refract light into a spectrum of internal flashes while the pavilion facets are arranged to return that light through the crown with minimal leakage. The mixed brilliant arrangement uses variations in facet size and angle to generate a lively pattern of scintillation, rather than a uniform sheen. The oval silhouette further influences the distribution of light, elongating the bright zones along the long axis and concentrating smaller, more intense flashes along the short axis. The result is a gem that displays dynamic contrast between broad flashes of green tone and crisp pinpoint brilliance as the stone or the viewer moves.

Proportions and facet symmetry are central to maximizing this stone s optical potential. With a depth of 2.73 mm and average diameter near 5.46 mm the depth to diameter relationship is optimized for a balanced face up spread and adequate pavilion depth to promote return of light. Careful girdle control and consistent facet junctions reduce light loss through uneven surfaces, contributing to the overall clean appearance noted on inspection. The excellent polish enhances the gem s ability to exhibit both brilliance and fire, by minimizing surface scattering and allowing the facets to act as clear mirrors and prisms. Because the sapphire shows a medium color intensity the mixed brilliant faceting is particularly effective, as it maintains body color while permitting strong internal light play. In certain lighting the stone can reveal subtle pleochroic tendencies that are characteristic of corundum, shifting slightly between lighter olive and deeper green tones depending on the viewing angle and background.

From a practical perspective this 0.72 carat oval green sapphire is versatile for a range of settings that take advantage of its optical properties. In a solitaire or halo ring the oval shape and mixed brilliant faceting will produce an elongated flash pattern that complements linear designs, while in a pendant the stone will present a consistent and lively face up appearance against both light and dark backgrounds. The absence of enhancement preserves natural color and structural integrity for long term wear, and the very very slightly included clarity grade evaluated at eye level indicates stability under routine mounting. For those seeking documented provenance and expert handling during purchase and setting The Natural Sapphire Company can provide further gemological information and guidance on mounting to preserve the geometric integrity of the cut. This green sapphire is a measured example of how calculated faceting geometry, clean proportions, and natural material quality combine to produce a stone with controlled color and maximum light play.