It is centered with one genuine spectacular cushion modified cut Natural no heat Burma Sapphire13.65cttw, measuring 15.14 x 9.69 x 8.72mm, prong set in 18K yellow gold. The center stone is surrounded by a halo of 16 genuine round cut Diamonds & adorned by a cluster of 30 genuine marquise-cut Diamonds approx: 8.85cttw, I color, VS clarity, prong set. Accompanied by GIA Gem lab report GIA #2181829987 Indicating the sapphire to be natural without heat or any treatments with Burma origin.