A 1.2mm surgical steel labret holding a single white opalite stone with ornamental beading. This is a quality internally threaded labret.  The bar is available in 6mm or 8mm lengths, the design is about 6mm across.

Flat backs (Labrets) are suitable for a variety of piercings. Lips, Tragus, Helix, Lobe etc Internally threaded labrets are better than externally threaded as there is no thread to catch on the piercing as you insert it. 

1.2mm x 6mm
1.2mm x 8mm