By the way on many if not all of these pieces there are small circular score marks indicating a bow drill. See the large blue-grey and white agate cow god/frog (figures 5.2 and 5.20 in my book) for evidence of the to and fro motion of a bow drill.
|Hongshan jade, agate and natural glass vessels||2087||drdavidanderson||27-Feb-18 20:56|
|Re: Hongshan jade, agate and natural glass vessels||390||Andrew_W||28-Feb-18 15:52|
|Re: Hongshan jade, agate and natural glass vessels||762||drdavidanderson||28-Feb-18 16:56|