9.90 Ct. Blue Sapphire from Ceylon (Sri Lanka)

If you have been searching for a truly memorable center gem to mark a lifetime event, or a rare specimen to add to a discerning collection, this transparent 9.90 carat oval blue sapphire answers that search with confidence. This stone measures 13.94 x 10.92 x 7.95 mm, it has a mixed brilliant cut that blends table facet brilliance with a faceted pavilion that gives both sparkle and depth, and it carries a clarity grade of very slightly included, evaluated at eye level. The color reads as vivid, with an intensity that reads as regal blue in daylight and electric under artificial light, and the polish on every facet is excellent. This sapphire is heat treated to enhance its tone and clarity, a common and stable enhancement that preserves the integrity of the gem, and its origin is Ceylon, Sri Lanka, a source celebrated for producing some of the world s most desirable cornflower to royal blue sapphires. At The Natural Sapphire Company we understand how important provenance, grading, and visual presence are when choosing a stone that will be worn for years and treasured for generations.

Visually this sapphire is a study in saturated, pure blue, the kind of color that pulls the eye and yet remains versatile enough to pair with a wide range of metals and accent stones. The oval shape gives the gem an elongated silhouette that flatters a finger, a pendant bail, or a brooch setting, while the mixed brilliant cut offers both scintillation across the table and flashes from the pavilion, so the gem reads as lively rather than flat. The very slightly included clarity grade means the stone looks clean and lively at normal viewing distances, and the excellent polish ensures each facet edge is crisp, maximizing light return. The dimensions make this sapphire an impressive size for a solitaire ring, large enough to command presence but balanced enough to wear comfortably every day. The heat treatment is disclosed transparently, and because it is stable and permanent under normal wear, you can design confidently knowing the stone will hold its beautiful hue and appearance.

When considering complementary gemstones for a custom piece, think about contrast and harmony, and how color and light interplay at different angles. A halo of fine white diamonds in a pavé setting will sharpen the sapphire s color and create a classic, high contrast look, ideal for an engagement ring that reads timeless. Pairing this Ceylon sapphire with near colorless or faintly warm melee diamonds will accentuate the vivid blue without competing with it. For a more colorful and expressive design, flank the sapphire with emeralds or tsavorite garnets to create a regal triad of deep blue and vivid green, a pairing that evokes natural richness and verdant sparkle. If you prefer warm tones, small yellow sapphires or golden citrines set into a three stone or tapered shoulder design will introduce warmth and vintage charm, especially in yellow gold. Rose gold provides a soft, romantic backdrop that warms the edges of the blue, while platinum or white gold gives a crisp, contemporary frame that enhances contrast and brilliance. For earrings or a pendant, pairing two smaller white diamonds above a bezel set oval will let the sapphire appear to float, while a cluster setting with mixed cuts will play up the mixed brilliant cut of the center stone for a richly textured statement piece.

At The Natural Sapphire Company we work with clients to translate these design possibilities into finished pieces that feel uniquely personal, whether your priority is understated elegance, vintage romance, or bold modernity. Because this sapphire is an oval of significant carat weight, we recommend design options that protect the girdle and corners, such as a secure four or six prong setting, a bezel for everyday security, or a low profile setting that keeps the stone close to the finger. Our designers can map out palettes of accent stones, from D to G diamonds for classic brilliance, to colored sapphires and spinels for tone on tone or contrast, and we will provide realistic renderings so you can see how metals and side stones interact with the vivid Ceylon blue. We also advise simple care steps to preserve the stone s beauty, cleanings with warm soapy water and a soft brush, and routine checks of the setting to ensure long term security. If your search is for that perfect engagement ring, an heirloom pendant, or a collector piece that stops conversations, this 9.90 carat Ceylon blue sapphire is a consummate solution, and The Natural Sapphire Company is ready to guide you from inspiration to the finished jewel.