These are a black with silver horsebit Gucci GG0893S 001 Sunglasses.
Model Number: GG0893S
Frame Colour: Shiny Black and Gold
Colour Code: 001
Frame Type: Full Rim
Frame Shape: Square
Material: Acetate
Lens Colour: Grey
Polarised: No
Lens Width: 57mm
Lens Height: 52mm
Bridge Size: 21mm
Temple Length: 140mm