Special Appellation: Aurora HANADAMA It is in the category of the highest quality of Akoya Pearls according to the tested results below and the P.S.L. criteria. Luster, luster, luster, and orient! The luster and orient on Japanese Hanadama Akoya pearls is certified to be the very highest and strongest of all Akoya pearls. These attributes are analyzed and certified to meet specific levels set by the Pearl Science Laboratory of Japan. The PSL is the foremost authority on Hanadama pearls, and the only official Hanadama grading lab in the world. The necklace is currently strung without knots. The clasp is of silver top G.SV bottom patent. We also provide free re-stringing (with knots) service upon request. Grading: Certified Aurora HANADAMA Thickness of Pearl Layers: 0.50mm Light Interference: Brightness- Very strong (Highest) Iridescent Color: Pink Green Body Color: White Imperfection & Surface: Very slightly Shape: Round Pearl Size: 7.5-8.0mm Remarks: Tests, using dedicated equipment confirmed that this pearl strand showed interference colors (the Aurora Effect), meeting the criteria for "Teri" established by our laboratory. Comes with certificate issued by the Pearl Science Lab of Japan Packing: Luxury Navy Blue Leatherette Jewelry Presentation Box accompanied by Care Card Shipping: FedEx Express from Hong Kong (2-6 days delivery lead time)