Value? 4 Old European Cut VS2 I-H 1.0 carat

[tamkrueg]

Considering purchasing 4 Old European cut VS2 I-H diamonds. Two are 1.0 carat and two are .50 carat.
Can someone please help me put a value range on these prior to purchase?
thank you.

 

[arkieb1]

Without a picture of the piece it is difficult to know for sure are they all together in a ring or set in metal of some type? Or are they loose stones for a project?