4.14 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 4.14 carat oval blue sapphire, measuring 10.74 x 8.49 x 5.36 mm, is a transparent gem with vivid color intensity and an excellent polish, offered by The Natural Sapphire Company. The gem is fashioned in a mixed brilliant cut, a faceting scheme that optimizes light return while preserving color saturation, with a proportioned table and crown arrangement that enhances scintillation across the oval outline. Clarity has been assessed as very slightly included, evaluated at eye level, which denotes minor natural inclusions that do not detract from face up presence but provide diagnostic evidence of natural growth. Origin is Ceylon, Sri Lanka, a deposit known for producing sapphires with a distinctive cornflower to royal blue hue. The piece has been heat treated, a standard and stable enhancement in corundum, applied to improve color and clarity while maintaining structural integrity. As corundum, the sapphire exhibits a refractive index of 1.762 to 1.770, and a specific gravity around 3.99 to 4.00, attributes that support its strong brilliance and weight distribution for a 4.14 carat oval of these dimensions.

When compared to lab grown sapphires, this natural Ceylon stone offers several technical advantages that appeal to connoisseurs and collectors. Natural sapphires carry complex growth zoning, silk rutile inclusions, crystal inclusions, and trace element signatures, each acting as a fingerprint that can be correlated to geographic origin through gemological analysis, provenance that cannot be authentically reproduced in the growth environment of synthetic corundum. Heat treatment, when fully disclosed, is an accepted and durable enhancement that refines color without compromising the long term stability or the natural inclusion framework that attests to origin. Lab grown material can offer uniformity of color and lower inclusion load at lower cost, however synthetic growth tends to produce characteristic features such as curved growth lines or flux remnants in some processes, and a more homogeneous trace element profile, which reduces the layered complexity of natural stones. From an investment and rarity perspective, natural sapphires from classic localities such as Ceylon typically retain and appreciate in value due to limited supply and unique provenance. For buyers seeking technical refinement, verified origin, and the nuanced beauty that arises from natural formation, this 4.14 carat Ceylon oval from The Natural Sapphire Company represents a superior combination of craftsmanship, material quality, and documented authenticity.