Natural sapphire, 3.00ct, oval mixed cut. ALGT certified and sealed, report no. 48581838, January 2026. Color: deep blue with a steely grey secondary tone — a cool, understated character that reads differently depending on light conditions. In warm or directional light the blue asserts itself; in diffuse light the grey secondary tone gives the stone a quiet, sophisticated presence. Pairs naturally with white gold, platinum, and diamond or zircon accents. Photos have been taken under different light sources and backgrounds deliberately, to show how the stone behaves across different conditions. At 3.00ct in a well-proportioned oval measuring 10.18 x 7.54mm, this is a substantial stone with real physical presence. The size is the opportunity here. Treatment: heated, standard commercial practice, fully disclosed on ALGT certificate. Natural silk inclusions present, visible under magnification, consistent with the stone's character and grade. Not a vivid saturated collector blue. Ideal for a custom jewelry project where a large certified natural sapphire is the goal: solitaire ring, pendant centrepiece, or surrounded by a diamond halo where the surrounding brilliance lifts and complements the stone's cooler tone. ALGT sealed packet included. Ships insured from Bologna, Italy. EU buyers: no customs, no import duties.