4.05 Ct. Purple Sapphire from Ceylon (Sri Lanka)

This purple sapphire is a C.Dunaigre certified example that brings together precise proportions, a vivid hue, and gemological transparency for discerning buyers. Weighing 4.05 carats, the stone is fashioned into an oval shape with dimensions of 10.57 by 8.40 by 5.38 millimeters, and it displays a mixed brilliant cut that balances scintillation and color saturation. The color intensity is described as intense, and the overall transparency is clear, allowing the purple to read strongly in a variety of light conditions. Clarity is graded as very very slightly included when evaluated at eye level, indicating that there are no eye visible inclusions that detract from the face up appearance. The polish has been judged excellent, which produces crisp facet junctions and strong reflections, and the sapphire has been heat treated, a standard and stable enhancement that improves color and clarity in a way that is broadly accepted by the trade and by informed collectors. The gem is sourced from Ceylon, Sri Lanka, a region renowned for sapphires that combine lively tone and saturation with a velvety color character, and this provenance is documented on the certification provided.

For an educated buyer the combination of attributes that this stone carries is significant in terms of both aesthetic performance and long term value. The very very slightly included clarity at eye level means that under typical viewing conditions the stone reads as clean, which is a premium attribute especially for stones that will be set as centerpieces. The mixed brilliant cut is chosen to enhance return of light while preserving the richness of color, so the pavilion facets work in concert with the crown to create both flash and a stable body color. The excellent polish maximizes optical performance, reducing light leakage that can diminish perceived brightness and color. Heat treatment is common for sapphires and, when disclosed and properly executed, results in a stable product that does not require further intervention by the owner. The Ceylon origin contributes to market desirability because Sri Lankan sapphires have a long history and a recognized profile, and the C.Dunaigre certification supplies independent confirmation of weight, dimensions, treatment disclosure, and origin, which supports transparency and provenance for collectors and custom jewelers alike.

The dimensions and shape of this sapphire make it particularly well suited to custom jewelry, because the oval silhouette is versatile, flattering, and efficient in terms of face up area versus weight. The measured length to width ratio is approximately 1.26, a proportion that provides a balanced, slightly elongated look that tends to visually lengthen the finger when set in rings, while remaining compact enough for pendants and vintage inspired settings. The depth of 5.38 millimeters yields a depth to average diameter ratio of approximately 56.7 percent, a proportion that sits comfortably in the range associated with good optical performance. In practical terms this means a generous face up size for its carat weight, and a pavilion that can be accommodated by common prong and bezel settings without excessive modification. At 4.05 carats this sapphire is large enough to be the definitive focal point of an engagement ring, a cocktail ring, or a pendant, yet the oval form also allows for elegant three stone layouts and halo designs that emphasize both color and brilliance.

When planning a custom setting for this stone there are several design and technical considerations that will optimize both beauty and durability. Prong settings with four or six claws will maximize light exposure to enhance brilliance and color, particularly when the stone is oriented with the long axis parallel to the finger in rings, which creates a flattering visual effect. A well executed bezel can offer a modern look and daily wear protection, but the seat must be designed to account for the pavilion depth to avoid lifting the stone excessively off the mounting. For clients seeking a vintage or Edwardian aesthetic, a delicate halo of small white sapphires or diamonds will magnify the face up presence and emphasize the rich purple tone, while platinum or 18 karat gold are both excellent metal choices for complementary warmth and strength. Because this sapphire is heat treated and stable, routine wear and normal jewelry repairs will not compromise the enhancement, however standard precautions for gemstones apply, such as avoiding prolonged exposure to harsh chemicals and extreme thermal shock. At The Natural Sapphire Company we are able to advise on exact bezel depth, prong placement, and gallery design based on the specific pavilion depth and crown measurements of this stone, and we welcome custom commission inquiries to ensure the final mounting showcases the intense purple color and exceptional polish to best effect.