TierraCast Frame Slide Link.  

Height 17.6mm x Width 24.3mm.  Loops 2.9 x 13.1mm.  

Frame inner Dimensions 11.6 x 11.6mm.

Takes a Swarovski 2493 Chessboard Flat Back Crystal 10mm.  The Crystal is slightly smaller than the space provided.  Set the crystal using an epoxy clay - which will give a clay border around the crystal.  Alternatively set the crystal with a strong adhesive in the centre and stick a very thin thread around the edge - or fill the gap with diamond glaze.  Just a few suggestions...