4.22 Ct. Greenish Blue Sapphire from Ceylon (Sri Lanka)

This 4.22 carat round greenish blue sapphire is a compelling example of natural Ceylon corundum, with precise dimensions of 9.95 by 10.03 by 5.29 millimeters, a mixed brilliant cut, and an excellent polish. The gem is transparent, with a clarity grade described as very slightly included when evaluated at eye level, indicating only minor internal features that do not materially affect visual performance or durability. Color is a dark intensity greenish blue, a tone that provides depth and presence in larger sizes while retaining lively color when viewed face up. Importantly, this sapphire has undergone no enhancement, and its origin is Ceylon, Sri Lanka, a source historically prized for its fine blue sapphires. The mixed brilliant cut balances pavilion depth and crown facets to maximize light return in a round outline, and the excellent polish ensures clean facet junctions and strong surface luster, both attributes that educated buyers use to assess overall cutting quality.

For collectors and connoisseurs this sapphire is rare in two complementary ways, both size and color. A round, transparent Ceylon stone over four carats is uncommon, because sapphires of this tone typically occur in smaller parcels or are sold as lighter cornflower blues rather than darker greenish blue material. Equally notable is the dark greenish blue hue combined with no enhancement, a combination that is scarce in the market where heat treatment is commonly applied to intensify color. Compared to similar options, smaller sapphires of this shade are more frequently available, and larger stones are often heat-treated to achieve uniform saturation. The absence of enhancement here elevates the gem for discerning buyers who value natural color and documented origin, attributes that support both aesthetic value and long term collectability. From a practical standpoint, corundum’s hardness and stability make this stone well suited to everyday jewelry, particularly solitaire or halo settings that showcase its round mixed brilliant cut. The Natural Sapphire Company presents this stone as an investment quality, museum worthy example of Ceylon sapphire, ideal for buyers seeking rarity, natural color, and excellent cutting and polish.