Laboratory Grown Emeralds. Colour Excellent: Clarity:VS1 Weight:7cts each Precious Stone. Dimensions 10mm x 12mm Laboratory Grown Blue Sapphires. Colour: Excellent Clarity: VS1 Weight: 5+ cts Dimensions: 10mm x 10mm & 10mm x 12mm. Laboratory Grown Pigeon Blood Red Rubies. Colour: Excellent Clarity VS1-VVS1-SI. Weight: 4+ cts. 5+ cts. Dimensions: 10/12mm x 0.75/10 mm