1.59 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This cushion shape blue sapphire weighs 1.59 carat, and measures 6.66 by 6.40 by 4.03 millimeters. It is cut in a mixed brilliant style, combining a faceted brilliant crown with a modified pavilion geometry to maximize return of blue saturation and sparkle. The mixed brilliant arrangement creates a controlled table, balanced crown height, and a pavilion depth that converts to an approximate depth proportion of sixty one point seven percent when calculated against the average diameter. This proportion supports strong internal reflection without overly deep pavilion trapping light, which is evident in the gem s lively light return in the imagery. Clarity is graded very slightly included at eye level, which in practice means small natural inclusions that do not interfere with overall transparency. The polish is excellent, contributing to crisp facet junctions and clean light pathways. There has been no enhancement applied to this stone, and the reported origin is Ceylon Sri Lanka, a locality known for producing vivid blue material with an appealing combination of saturation and lively tone.

From a bench and design perspective the mixed brilliant cushion presents a flexible platform for customization into a wide range of mountings. The relatively compact table and strong pavilion make this sapphire well suited to open backed mounts that allow maximum light entry, which highlights the vivid color intensity. For an engagement ring, a four or six prong head with fine prong tips set to the cushion outline preserves the shape while allowing light to breathe. A low profile bezel is recommended for active wearers, with a scalloped inner seat to follow the cushion curve and protect corner facets. A halo of round brilliant diamonds or micro pavé around the cushion will increase perceived size and provide contrast, and accent stones such as tapered baguettes or trillion cuts work well in a three stone composition to elongate the hand. For a contemporary aesthetic tension or bezel set pendants are excellent, with the option to add a diamond halo or a split bail to catch additional light. Metal selection will materially affect color perception, with platinum and white gold emphasizing the cooler blue tones, while yellow gold will warm the appearance and add vintage appeal.

Practical workshop considerations and matching options are important for clients who wish to commission a bespoke piece through The Natural Sapphire Company. The stone s dimensions allow a ring head roughly six and a half to seven millimeters across to sit proportionally on average finger sizes, and the girdle thickness and excellent polish reduce the need for heavy reworking. If additional shaping is requested, any recut or change in facet design will reduce weight, and that trade off should be discussed during design planning. For earrings and pendants pairing this single gem as a focal point with smaller matched sapphires or diamonds is a common approach, and when pairing with diamonds we advise choosing near colorless grades with clean clarity to avoid color bleed into the sapphire field. For mens jewelry such as signet or cufflinks the cushion outline reads strongly in low profile settings and can be set in flush or bezel mountings for durability. Finally, our in house design team can translate these technical parameters into CAD visualizations and hand sketches, ensuring that mounting geometry, prong placement, and backplate openness are optimized to protect the stone while maximizing the vivid Ceylon color. If you would like tailored options or CAD renders, The Natural Sapphire Company can provide detailed proposals and metal mock ups based on these specifications.