It is a legitimate company. I ordered a ring from them and I'm delighted with my purchase.
I will also be reporting them to the BBB. I will also be reporting the to the State Attorney General where they are based, and the Consumer Financial Protection Bureau, and the FTC. I am extremely irritated with them!
They present their products as if they are limited quantities to get money for future orders. They say expect delayed shipping because the product is in high demand and few are available. They are just taking the money before they have the product. I opted for a refund when I found out. Also reported to BBB.