Stackable and cute, you will never want to replace your north star diamond studs. Solds as single or pair. Material: Gold Karat: 18K Stone: Diamond Stone Colour: White Number of Stones: 1 Stone Carat: 0.01,5cts Stone Type: VS SI Stone Shape: Round Available sizes: Single or Pair Does it come with certificate? No Can the piece be engraved? No Dimensions: H: 6mm, W: 5mm