The marks at 5:38 look very similar to marks from tube drills holes in stone.
@itsnot_stupid_ifitworks
Жыл бұрын
I'm curious why a steel mortise and pestle would be needed to create diamond dust ? And not one out of a stone like diorite etc
@RuiGalopimdeCarvalhoFGADGA
Жыл бұрын
That is a very interesting question for the invited speaker. You may reach Jack Ogden via the Society of Jewellery Historians : www.societyofjewelleryhistorians.ac.uk
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