In 1836 Francis Baily noted the "beads" around the moon's edge during one of these events
The diamond ring effect is seen when only one bead is 
left; a shining... [DOC] [TLE] Baily's beads or pearls of light  Astronoo [PAR] These abrasions of the Moon sunlight during a solar eclipse, allows beads of 
sunlight to ... on the path of light around the edges and their duration is 1 to 2 
minutes.