Very pretty sandals from John Lewis
The style is called "Dorset"
Colour is pewter 

Sling back style with elasticated buckle area, peep toe to front with rectangular formed bow detail with metal and diamante effect detail to the middle

Small stiletto style heel (approx 7 cm high)
UK size 4

Pre owned so some slight wear to the heels, sole etc but generally good condition. Come in their original box