4.28 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent cushion shape blue sapphire, weighing 4.28 carats, presents a balanced combination of size and form that suits a wide range of custom jewelry designs. The gem measures 8.97 x 7.50 x 6.85 mm, offering a substantial presence while remaining compatible with both solitaire and multi stone settings. The mixed brilliant cut enhances light performance, delivering lively return and a pleasing overall face up appearance. The clarity grade is very very slightly included, evaluated at eye level, indicating minimal inclusions that do not detract from the gem when set. Color is vivid in intensity, exhibiting the saturated blue tones associated with Ceylon origin, and the stone has an excellent polish that contributes to crisp facet junctions and strong surface reflection. The sapphire has undergone heat treatment, a common and accepted enhancement to improve color and clarity stability, and the origin is Ceylon, Sri Lanka, a locality renowned for producing richly colored sapphires with desirable tone and saturation. The Natural Sapphire Company provides this gem with complete specification details to assist designers and clients in evaluating suitability for intended applications.

Given its dimensions and cushion profile, this sapphire is particularly well suited to bespoke pieces where the stone will serve as the focal point. The near eight by seven millimeter proportions fit comfortably into classic engagement ring designs using prong, bezel, or hybrid settings, while the moderate depth of 6.85 mm allows for secure mounting without excessive elevation. Designers seeking a softer silhouette will find the cushion shape lends itself to halo arrangements and three stone compositions, while those pursuing a more traditional aesthetic can place it as a center stone flanked by tapered baguettes or round brilliant accents. The combination of vivid color and very very slight inclusions evaluated at eye level means color driven designs will benefit most, with minimal need for large accent stones to mask clarity concerns. For custom consideration, The Natural Sapphire Company can provide matching pair options for earrings, recommendations on mounting styles to maximize color face up, and guidance on metal selection to complement the Ceylon blue. This sapphire’s size, shape, and quality make it a practical and refined choice for fine custom jewelry creation.