18" with extender Brand New 1.0ct (6.5mm) center stones ● Brilliant Round Moissanite Diamond ● 18k White Gold Finish 925 Sterling Silver ● Passed Diamond tester ● 100% Authentic Moissanite Diamond comes with a certificate of authenticity ● Clarity Grade: VVS1 ● Color Grade: D Moissanite ranks 9.25 on the Mohs scale, while diamonds rank 10 on the Mohs scale, but Moissanite have more fire and brilliance than real diamond If you have any queries, please do not hesitate to ask.