R.S. Covenant has been selling rings for 30 years which has allowed them to spend a lot of time focused on improving quality. All stones are hand set and most are prong set in the same manner as fine gold jewelry. The diamond-like styles use genuine cubic zirconia and Swarovski crystal. Other styles use genuine stones such as tiger eye, onyx, opal, garnet, amethyst and sometimes ruby, sapphire, or emerald. Covenant rings have the best finish and every casting of brass-alloy or sterling silver is hand polished before going into the plater. Sterling Silver is ".925". Great security system with display packages available.