If you’ve found someone you want to spend the rest of your life with, and you’re planning to propose, you may be searching online catalogs for diamond rings. After all, according to the American Gem Society, the use of diamond rings to propose with has continued since 1477, when it was first done in Austria. Sparkly engagement rings, topped by diamonds, have continued to be one of the most popular ways to signify an engagement. According to the Knot, if you follow tradition, you’ll use a classic diamond ring for your proposal. The same website defines a classic diamond ring…