Here is the reference book describing the setting of half-drilled
pearls using a split pin and wedge.
“Metalwork & Enamelling” by Herbert Maryon, copyright 1971, fifth
edition. Dover Publications, Inc., New York. Pages 84-85.
Mr. Maryon was technical attache, research lab for the British
Museum, 1945 -1963. Hope this helps.
Judy in Kansas, who has been making yummy strawberry jam with lots
of fruit. Hoping to get some apricots to dry and cherries to make