6.16 Ct. Blue Sapphire from Ceylon (Sri Lanka)

As a representative of The Natural Sapphire Company, I am pleased to present a remarkable C.Dunaigre certified Vivid Blue Royal Blue sapphire, weighing 6.16 carats, in a classic oval shape with dimensions of 11.11 by 8.99 by 7.41 millimeters. This transparent sapphire exhibits a vivid color intensity that reads as a true royal blue, and it is finished with a mixed brilliant cut that balances scintillation with strong color saturation. The stone has a clarity grade described as very very slightly included, evaluated at eye level, and it displays excellent polish across the crown and pavilion facets. Origin is Ceylon, Sri Lanka, and the stone has undergone standard heat treatment, a stable enhancement that has been disclosed and documented on the accompanying C.Dunaigre report, which accompanies the piece for verification and provenance. The photographs included show the sapphire on the hand for scale, and they demonstrate both the depth of color and the stone's capacity to maintain brilliance under varied lighting conditions.

From a gemological perspective, this sapphire presents attributes that educated buyers look for when assessing rarity and investment quality. The vivid color intensity is the primary determinant of value in blue sapphire grading, and this specimen sits within the top tier for saturation, with a mid to slightly deep tone that preserves sparkle without appearing inky. The mixed brilliant cut has been used intentionally to create a balance between large table reflection and smaller crown facets, which enhances the perceived size and allows the hue to remain evenly distributed across the face of the gem. The clarity grade very very slightly included, evaluated at eye level, indicates that inclusions are minimal to the unaided eye, contributing to both transparency and light performance. The excellent polish further increases light return and face up appeal, while the 7.41 millimeter depth is well proportioned to the stone width and length, supporting a secure girdle and optimal facet symmetry. Heat treatment is disclosed, and in Ceylon sapphires this process is common and accepted by the market, as it stabilizes color and improves clarity without undermining the gem's long term durability.

For bespoke jewelry, this sapphire offers a wealth of design possibilities that will highlight its royal blue character while catering to refined tastes. Set in platinum or 18 carat white gold, a well proportioned halo of high color and high clarity round brilliant diamonds will provide maximum contrast, brightening the sapphire and increasing perceived size without competing with its color. A three stone design with tapered baguette diamonds or kite shaped side stones will create a strong axial emphasis that elongates the finger and complements the oval outline. If a warmer palette is desired, 18 carat yellow gold will impart a classic, regal feel, and can be paired with small yellow sapphire melee to create subtle color echoes that enhance the blue through juxtaposition. For a more colorful and contemporary composition, pairing this Ceylon sapphire with small vivid green tsavorites or emeralds creates a lush jewel tone combination, and using graduated light blue to medium blue sapphires as shoulder stones produces an ombre effect that reinforces the central stone's Ceylon heritage. In all scenarios, keeping accent stones modest in size relative to the 6.16 carat center will preserve the dominance of the royal blue sapphire, while carefully chosen diamond cut and quality will accentuate brilliance and allow the blue to remain the focal point.

When evaluating suitability for a signature engagement ring, a statement pendant, or a cuff style piece, consider that the stone's dimensions and mixed brilliant cut are versatile enough for secure bezel settings as well as classic four or six prong arrangements, with the thickness of the pavilion supporting protective settings for everyday wear. The C.Dunaigre certification and full disclosure of heat treatment ensure transparent provenance and market acceptance, and The Natural Sapphire Company stands ready to provide the laboratory report, high resolution imagery, and custom design consultations to realize your vision. For routine care, the heat treated sapphire is durable, but I recommend gentle cleaning with warm soapy water and a soft brush, avoiding strong acids and prolonged exposure to extreme heat, and if ultrasonic or steam cleaning is desired, consult with us first so we can confirm the suitability for the specific mounting. If you would like to see CAD renderings of design options that pair the sapphire with diamonds, emeralds, tsavorites, or contrasting yellow sapphires, or if you would like alternative metal suggestions and a price estimate for a custom setting, please contact The Natural Sapphire Company and we will guide you through each step to create a piece that showcases this exceptional royal blue sapphire to its fullest advantage.