This is a wonderful little (gently polished) natural quartz double terminated point that measures about 3cm long x 0.7cm wide.
This comes on the lightweight 1mm wide 18 inch silver chain in the pictures.
Please look closely at the size and photos before you buy, there are rusty coloured inclusions (which don't really show when it's on as they are a similar colour to skin) and the bottom point has a ridge in its end but overall this is a really lovely one - and it feels gorgeous!