Modern Gents, Berricle, and Tiger Gems are all jewelry brands that offer affordable engagement and wedding rings. While Modern Gents and Berricle both use artificial diamonds and gemstones, Tiger Gems uses lab-created diamonds. Modern Gents and Berricle have similar price points and styles, but Berricle offers a wider variety of ring designs. Tiger Gems, on the other hand, has a more limited selection but offers a lifetime warranty on their products.