has anyone heard of this company that makes diamond rings?

[kalari26267]

I have a 1/2 carat white gold round cut diamond clarity is I and it is made by or sold by VSG Sandlers fine jewelry. I am trying to find the website for this company and haven''t had any luck. I am trying to find out what the ring is worth. My friend paid 1,400.00 for it and want to know what a reasonable price for him to sell it for.
thank you