A pretty fluorite stretchy bracelet - the batch we have at the moment the chips are very slightly smaller than the picture (by about 2mm).
The chips average about 5mmx 3mm.
Yours will be similar to the photos but each is unique.
These bracelets are a slim medium size, but they are on elastic and do fit a bit bigger with a bit of a stretch but probably won't last so long..
I'd recommend taking these off when in the shower or bath as hot water can weaken the elastic!