5.20 Ct.Tw.Total Carat Weight Blue Star Sapphire Pair from Burma (Myanmar)

This pair of natural star sapphires from Burma Myanmar consists of 2.59 carats and 2.61 carats respectively, both fashioned into oval cabochons with dimensions of 8.00 x 6.61 x 4.42 mm and 7.58 x 6.77 x 5.09 mm. The stones are semi translucent with a medium intense blue color intensity, evaluated for evenness of tone and saturation across the domed surface. Clarity is graded as very slightly included at eye level, indicating minimal needle and crystal inclusions that remain consistent with the formation of a visible asterism without significant impact on overall transparency. The cabochon cut emphasizes a clean, high convex dome and well controlled symmetry, attributes that allow the oriented rutile silk to produce a distinct, centrally located six ray star when illuminated. The differing dome heights between the two stones alters the star projection slightly, with the 5.09 mm thickness yielding a marginally stronger and more stable asterism under direct lighting, while the 4.42 mm stone shows slightly faster star movement as the viewing angle changes. Both pieces exhibit an excellent polish, producing smooth, reflective surfaces that enhance star contrast and surface luster.

From a lapidary and setting perspective these sapphires demonstrate meticulous craftsmanship and natural provenance, with no enhancement, a factor that materially affects desirability and rarity. The pairing was selected to balance weight and color match, with only minor variations in outline and dome profile that are typical when matching natural cabochons. For optimal display the stones should be oriented so that light incidence is perpendicular to the dome apex to centralize the asterism, and settings that protect the dome while allowing ample light entry are recommended, such as low profile bezels with elevated crowns or open backed mounts if metal color and design permit. The Burmese origin contributes to their appeal due to known geological conditions that favor high quality silk formation and stable color. The Natural Sapphire Company stands behind the natural, untreated nature of these stones and can provide further technical details on asterism orientation, recommended mounting practices, and light testing protocols to confirm star behavior for specific jewelry designs.