Thank you very much for viewing. The deep sapphire blue brilliance, deeper than the sky or the sea! A gem you can enjoy every day. ●Product Details Name: Natural Sapphire Material: k18WG (White Gold) Necklace: Cut Azuki necklace, thickness approx. 0.55mm Length: 40cm total length, with adjustment clasp at 36.5cm Pendant: Approximately 6.7mm (H) x 5.5mm (W) x 4.0mm (D) Carat: 0.575ct Cut: Heart Shape Cut ●Other: Comes with a certificate of authenticity and a case. Natural stones may have minor imperfections (inclusions). Please be aware of this. Regarding the number of days until shipment, we will ship the next day if it does not coincide with the shop's regular holidays, temporary closures, summer holidays, or year-end and New Year holidays. Please also check our website. Thank you very much.