Not sure how it is with other sororities....but with the ZTA badge you can get it either gold or silver, and with either no jewels, pearls, diamonds, saphires, rubies, amethysts, and maybe others, but you can't have more than two different types of jewels on it. Example: you could have a diamond & saphire one, but you couldn't have diamonds, saphires, AND rubies. They range in price from like $25 to $300 something. I'm sad that I haven't recieved my badge yet (they take a long time to come in), but we wear our Big Sister's badge until then. The one I ordered is gold without jewels, but I will probably get amythests on it in a couple years cuz it's my birthstone.
An AOII friend of mine told me there are different jewels u can get for hers too of varying prices, and the cheapest one is like $75!!!!