Hi, on offer is one of these Top Quality Mother of Pearl Blanks which in a previous life were gaming counters made by the top Paris Box Manufacturer Tajan.  They measure 33 x 20 x (just under) 3 mm approximately. They have a great colour and have a polished surface on each side making them really useful for inlay or making jewellery. The thickness is almost impossible to do nowadays cost effectively and most other inlays on offer are much thinner, these are really substantial, for jewellery they will make pendants in their own right.