How large do you want them?

> https://item.taobao.com/item.htm?id=828627288905&skuId=55567...

This ring goes up to 5ct, and some other listings are at 7ct.

A 3ct example at the link, which would easily be a >$20k ring under other circumstances and isn't too comically large, will run you about $1500.

There are many, many others.