GIA recommends cleaning most colored gems with warm water, mild soap (no detergents), and a soft brush. Be sure to stop the sink’s drain or use a rubber mat in case the stone comes loose from its setting.
Roman Bangle - rose gold. 18K rose gold, 3mm, 6.9 grams. This is the kind of jewelry you never have to take off, since you can't hurt it and it goes with everything. Two and a half inches across and 3mm thick, this bangle should fit most everyone. Rose gold looks great on its own, and is a nice a complement to yellow gold or white metal bangles.