21.10 Ct. Yellow Sapphire Crystal from Ceylon (Sri Lanka)

This is a remarkable semi transparent yellow sapphire weighing 21.10 carat, presented in a various shape with generous dimensions of 32.07 x 10.95 x 7.72 mm, a substantial size that immediately distinguishes it from the ordinary. The rough crystal cut preserves the stone s natural form and mass, allowing an appreciable presence on the finger, in a pendant, or as a centerpiece in a bespoke design, while the excellent polish gives finished facets and surfaces a refined, lively appearance. Clarity is graded eye clean, evaluated at eye level, which means that to the unaided eye the gem presents as free of distracting internal features, a highly desirable attribute for wearing jewelry. Color intensity is described as intense, a saturated, vibrant yellow that reads strongly in daylight and artificial lighting, and the stone is entirely without enhancement, free from heat treatment or diffusion, which significantly elevates its rarity and appeal to the discerning buyer. Origin is Ceylon, Sri Lanka, a classic and respected provenance for high quality sapphires, and for collectors and connoisseurs the combination of untreated material, Ceylon origin, substantial carat weight, and an intense natural hue is an important marker of value.

Though this sapphire is eye clean, it still carries internal characteristics typical of natural sapphires that act as unique identifiers and add to its natural character, invisible to the naked eye yet detectable under magnification and in gemological study. Fine silk, which is composed of microscopic rutile needles, can subtly influence the stone s interaction with light, diffusing brilliance and creating a soft glow that complements the intense yellow color without compromising transparency. Tiny mineral crystals and fine growth zoning often occur in Ceylon specimens and serve as internal fingerprints, allowing gemologists to corroborate natural origin and formation history. Fingerprint like inclusions and tiny healed fractures may also be present on a microscopic scale, and these features are not flaws in the conventional sense, but rather natural signatures that verify the sapphire s provenance and validate its untreated status, because many enhancements alter or mask such internal features. When examined with standard gemological instruments, these inclusions provide a reliable, scientific basis for identification, documentation, and long term provenance tracking, and they contribute to the story and uniqueness of this particular gem.

For an educated buyer evaluating rarity and long term value, the combination of substantial weight, intense natural color, eye clean clarity, excellent polish, rough crystal cut that retains weight and natural character, no enhancement, and Sri Lankan origin creates a compelling proposition. Large, untreated yellow sapphires from Ceylon are relatively rare on the market, particularly in sizes above 20 carats, and their value scales not just with carat weight but with the interplay of color saturation and clarity, attributes this stone displays in concert. The elongated dimensions make it especially suitable for bespoke designs that emphasize length and movement, such as dramatic pendants and cocktail rings that allow the intense color to read clearly from a distance, while the rough crystal cut gives a contemporary, organic aesthetic favored by collectors seeking individuality. At The Natural Sapphire Company we understand the importance of transparency and documentation, and we can facilitate independent verification and detailed reporting when required, so buyers can make informed decisions. For setting and wear we recommend protective design considerations that respect the stone s profile and thickness, such as partial or full bezel options for high wear pieces, and routine gentle cleaning to maintain the excellent polish and lively color over time. This untreated Ceylon yellow sapphire is both a beautiful wearable gem and a collectible specimen, offering a rare combination of natural integrity, identifiable internal features, and substantial presence that will appeal to connoisseurs and jewelers alike.