Best to get a price list direct from suppliers. Nowadays a lot of manufacturing is being done in India and prices continue to get more competitive and quality is also improving. Here at Luxuria Diamonds we don’t sell loose stones but do buy lab grown stones for our engagement rings.
Some examples below for excellent cut, polish and sym stones & non-flour below
Round 0.5 ct. D VVS2 (IGI) US$200
Round 1.0 ct. E VVS2 (IGI) US$1600
Round 1.5 ct. E VS1 (IGI) US$3500