Looking for a cheap ring mens diamond, where can I go?

I am looking for somewhere to get a mens 9ct Gold Diamond Ring for less than £ 50 ko is one # now the websites of the UK that I can look?

Argos

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I have a ring of men who have 8 grams of 24 carat gold diamond and if 0.5ct nominal and color E with the certificate to prove they are real. I am 14 and was a gift from my parents who are rich and have many rings, none in this diamond and much more, so please, Could I have an approximate Vaul.

First, the value of gold: 1 gram = 0.0321507466 ounces troy. 8 grams = 0.257206. 1 oz gold = about U.S. $ 950 The value of gold 'is therefore around $ 230 I know nothing about diamonds, but diamonds of value establishing a ring of $ 230? Presaumably around the same kind of security. Also carat 1 / 2 is quite small (but big enough to ring a man. Therefore, estimating the value of $ 500, but you know you could get around $ 2k for it!

	Seiko Quartz Mens Coutura Diamond Black Dial Stainless Steel Dress Watch SGED57 $130.00

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	Seiko Diamond Mens Silver Dial Stainless Steel Dress Quartz Watch SKP337 $158.00