This ring features a rare gem, Hauyne (0.562ct), with its striking cobalt blue color, set in the center, surrounded by a luxurious total of 1.00ct of diamonds. Hauyne is an extremely rare gemstone with very limited production and market availability. Stones over 0.5ct are particularly rare, making this a collectible piece. Crafted from K18 white gold, it offers a fresh and sophisticated impression. It comes with a certificate from the Gemological Institute of Japan, ensuring peace of mind. Main Stone: Hauyne 0.562ct Side Stones: Diamonds (FD) total 1.00ct Material: K18WG (18K White Gold) Weight: 5.3g Size: #19 Accessories: CGL Sorting Certificate (Gemological Institute of Japan) 02160001-08 Thank you for looking.