Small sapphire loose gemstones for jewelry making. Average size : 6.2x5.0 mm. All of our loose gemstone are genuine gemstone. If you would like a gem certificate from the lab, the extra cost will be added.The price depends on the lab options you choose and the gem type and weight. If you're interested in our product and would like to see more details in video format, we're gladly to provide that for you in the office hours. We're specialize in ruby, sapphires (green, red, orange, yellow) and tsavorites. If you're looking for something specific and it's not on the listing we'll try to find them for you. If you have any questions, please feel free to ask us, we'll do our best to help you. This item is made of sapphire.