4.05 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This exceptional round blue sapphire weighs 4.05 carat, and measures 9.17 x 9.04 x 6.14 mm, and it presents an ideal balance of size and proportion for a true statement gem. Its mixed brilliant cut was chosen to maximize lively sparkle while retaining a pleasing depth, and the result is a stone that captures attention at a distance and rewards close inspection. At eye level this sapphire is eye clean, meaning the clarity supports an unbroken field of intense blue without visible inclusions, a quality that many comparable stones at this carat weight do not achieve. The intense color intensity and excellent polish give the gem a velvety yet brilliant appearance that reads as luxury, and the transparent nature of the material ensures every faceted plane contributes to the overall performance. When you compare this sapphire to the common parcels on the market that often compromise on clarity or color at this size, this stone stands apart for its combination of presence and visual purity.

The mixed brilliant cut contributes to a dynamic interplay of light that rivals many step cut or shallow cuts in its ability to flash and scintillate. Because the pavilion depth is balanced with a generous table, the gem returns light with lively brilliance while preserving deep saturated color, a balance that is difficult to achieve in larger sapphires. Many sellers offer larger stones with muddy color or visible inclusions that disrupt the overall look, or smaller stones with brilliant color that lack the physical presence to make a statement. This sapphire was heat treated, a widely accepted enhancement that improves color stability and visual appeal without compromising durability, and this treatment is disclosed for full transparency. Coming from Ceylon Sri Lanka, the stone carries a provenance that often imparts that classic Ceylon character, a refined blue that can be more sought after than generic commercial material from less prestigious origins.

In practical wear and design terms the dimensions and clarity of this sapphire make it exceptionally versatile for high impact settings. In a solitaire mount the round shape and nearly nine millimeter diameter create a commanding focal point, and in halo or three stone arrangements the stone lifts surrounding diamonds by contrast, producing a luxurious impression without appearing crowded. For custom pieces the clean field and intense hue allow jewelers to explore open gallery settings that let light into the pavilion, or secure bezel settings that emphasize the bold silhouette, and the 6.14 mm depth provides comfortable security for prongs and bezels alike. Compared to unstable gems like emeralds or fragile gems like opal, sapphire is a top choice for daily wear thanks to its superior hardness and toughness, and this natural Ceylon sapphire offers the reassurance of long term resilience and sustained beauty that synthetic or glass imitations cannot match.

At The Natural Sapphire Company we focus on sourcing natural gemstones that combine aesthetic excellence with responsible disclosure, and this 4.05 carat Ceylon blue sapphire exemplifies that commitment. We present detailed measurements, cut description, clarity grading at eye level, origin information, and enhancement disclosure so you can compare this stone confidently to alternatives in the market. Where mass market options may hide origins or gloss over clarity issues, this sapphire is accompanied by information that supports its premium positioning and long term value. If you seek a centerpiece that will anchor a bespoke engagement ring, a remarkable pendant, or a symbolic statement piece, this sapphire delivers rare scale, exceptional transparency, and that intense Ceylon blue that collectors prize, and our team can assist with setting recommendations, certificate options, and secure delivery to ensure your purchase is both beautiful and informed.