Hubei Turquoise Studs
These simple studs are made with Hubei turquoise, which has natural inclusions and variations in color.
For size reference, here are some approximations: 6mm = width of a pencil eraser; 8mm = a green pea
Available in 6mm & 8mm in sterling silver or 14k gold fill
In the last image, the 6mm pairs are on the left and right, and an 8mm pair is in the middle.