Genuine Earth Mined 4CTs ( 2 CTs each ) Off-White Diamond Round Brilliant Cut Earrings set in 925 Sterling Silver Dangling Setting. No Chemicals or Color added. Heat Pressure High Temp treated. They are subjected to extremely high temp. & pressure in machines to enhance color. This moves the atoms in the Diamond. Due to the nature of it's composition it may test as Moissanite. Slides are part of item description. Ask all questions before purchasing. They are Fantastic and look Modern and yet Vintage at the same time - Is this possible!!! These Genuine Diamonds are huge with Brilliant Sparkle and will Last Forever!