Is it true to send a diamond ring according to the wedding dress?

I think if it is a big store, I will give you a real diamond ring. We also have such activities here! I say this because the ring I gave you first must be very small, estimated to be a broken diamond of this size of 3 ~ 50 cents. If you buy this kind of diamond ring online, you can get it around 1000. Maybe they only need 600 or 700 yuan to earn more. (I bought it myself 12 broken diamond, 18K gold and 830 yuan) Then, again ~ the wool is on the sheep. If it costs you 1 or 2000 ~, the money will come back. Do you think the ring is less than 1000, because when you look at it in the mall, the price must be above 2K?