Moissanite Miami Cuban Chain 6MM .925 Sterling Silver. This iced out Cuban Chain is simply breathtaking and displays an incredible bling bling shine. We insisted on using the finest Moissanite stones available to craft these perfect high end 'diamond' Iced Out Cuban Link Necklaces. Moissanite stones are carbon based stones just like real Diamonds*. The benefit of our Moissanite Cuban Link Chains are that you get a better shine for much less money. Our Moissanite Stones have a higher refractive index than real Diamonds and rank 9.5 on Mohs hardness scale.