We have brought out the bottom (semi-precious) stone for these luxury cufflinks. They are designed here in the UK and inlaid with beautiful rose quartz. Then they are finished with sturdy rhodium so that they last a long time. The rotatable T-closure is very easy to use. Fortunately, because I have the idea that you will often wear these buttons. Rhodium plated, insert: quartz. Supplied in Charles Tyrwhitt logo cuff box on the back. Clean with a damp cloth.