3.64 Ct. Blue Sapphire from Thailand

One transparent, oval shape blue sapphire, a timeless jewel that carries the quiet dignity of centuries, is presented by The Natural Sapphire Company. This gem weighs 3.64 carats, and measures 11.09 by 8.61 by 4.58 millimeters, a classic oval silhouette rendered in a mixed brilliant cut that balances scintillation with depth. Clarity is described as very very slightly included, evaluated at eye level, a grade that assures an eye-clean appearance while preserving natural character. The sapphire shows a dark color intensity and an excellent polish, attributes that give the stone a rich, velvety blue that responds beautifully to light. Enhancement is by heat treatment, a stable and widely accepted process that improves color and clarity without altering the gem’s natural structure. Origin is Thailand, a country with a long heritage of skilled lapidary work and refined trade in sapphires, a provenance that adds a layer of history and geographic identity to the stone.

The proportions and overall size of this 3.64 carat oval sapphire make it exceptionally well suited for custom jewelry design. At 11.09 by 8.61 millimeters the stone occupies a commanding but elegant footprint, large enough to serve as a striking solitaire in a statement ring, yet refined enough to sit comfortably in a pendant or as the central element of a three-stone arrangement. The 4.58 millimeter depth gives the cutter room to maintain good light return while ensuring a secure setting is practical, and the mixed brilliant cut enhances fire and scintillation across the pavilion and crown facets. The oval shape is inherently flattering for wearable design, visually elongating the finger when set in a ring and offering versatility in orientation, either set north-south for classic lines or east-west for a modern silhouette. For custom mountings, prong settings highlight the most color and allow maximum light to enter the stone, while a low-profile bezel provides protection for daily wear and emphasizes the gem’s elegant outline. Because the stone is eye-clean and has an excellent polish, designers can confidently create open-backed settings that reveal the sapphire’s deep blue without distraction.

Design possibilities for this sapphire span the traditional to the boldly contemporary, a testament to its classical color and proportion. In an antique-inspired halo, the dark blue center will read as regal and enduring, surrounded by a ring of fine white diamonds that play up the sapphire’s saturation and historical connotations of royalty and fidelity. A minimalist solitaire in platinum or white gold will suit someone who values understated legacy, while yellow gold or warm rose gold mountings will call forward an Old World charm, echoing the storied past of sapphires in royal jewelry. The oval’s generous spread also adapts beautifully to bespoke engagement rings that combine side stones, tapered baguettes, or pavé shoulders, each approach crafting a different era of style from Georgian romance to midcentury glamour. Beyond rings, the gem’s dimensions make it a superb choice for an heirloom pendant or a dramatic cocktail piece, and a matched pair of smaller ovals could be imagined for earrings inspired by the same design language.

When you choose this Thai-origin sapphire through The Natural Sapphire Company you are not merely acquiring a stone, you are commissioning a heirloom that draws from centuries of gem lore and artisanal skill. Our team can guide you through metal choices, setting styles, and proportions that best complement the 11.09 by 8.61 by 4.58 millimeter oval, and we offer bespoke design consultations to translate the sapphire’s personality into a finished piece that will be worn for a lifetime. We will provide full documentation of the gem’s characteristics, including carat weight, cut description, clarity evaluation, color intensity, polish grade, reported enhancement, and origin, so you have confidence in its nature and value. With thoughtful setting recommendations, CAD mockups, and expert benchwork, we ensure the stone’s deep blue and excellent polish are shown to their fullest advantage. This sapphire, with its classic oval form and substantial presence, is ideally suited for custom jewelry that honors tradition, celebrates personal narrative, and becomes a visible legacy for generations to come.