"Accordian"

Afton Giacomini

Angles are for beryl.
Index settings are for an 120 tooth gear.



I cut this synthetic spinel for my son Damon.
Can you tell I have cut this pattern a lot?

Pavilion


Cut 5 facets at 64° index 24, 48, 72, 96, 120.
Cut 5 facets at 58° index 24, 48, 72, 96, 120.
Cut 10 facets at 49° index 02, 22 26, 46, 50, 70, 74, 94, 98, 118.
Cut 5 facets at 40° index 12 36, 60, 84, 108.
Polish in opposite order.


Crown


Square the girdle at 90°, index 24, 48, 72, 96, 120.
Cut and polish table.
Cut 5 facets at 58° index 24, 48, 72, 96, 120.
Cut 10 facets at 23.5° index 09, 15 33, 39, 57, 63, 81, 87, 105, 111.
Polish in reverse order of cutting.