This listing is for a pair of Lazurite plugs hand carved to your size. This stone originated from near Lake Baikal Russia. This mine opened in 1851 and has been producing this light coloured stone in a variety of arts like vases. Lazurite makes an appearance in Lapis Lazuli, along with pyrite and other minerals. This Lazurite tho, I believe, contains dolomite, which gives it the weight and the white streaks throughout. I bought this stone for the light blue that reminded me of drawing clouds as a kid. Want to know more? Check out this site: https://www.mindat.org/min-2357.html Custom plugs -- Choose your size in the drop down menu. If you have any special preferences (on wearable, inner our outter flare measurements) please leave me a note upon checkout. It takes about 2 weeks to make them for you - please read my shop policies for more information regarding my custom orders. The plugs are one of a kind, crafted on a lapidary machine. Stone shown in the picture is the one I will be making your plugs from. Due to the nature of hand crafting each plug, sizes may vary within .mm of each other and will not be a perfect measurement all around the saddle. As this would be body jewelry, these items cannot be returned or exchanged for sanitary reasons.