Making some progress with the remaining 2018 rough. Three quartz varieties cut with concave facets pavilion and crown.
The largest of these is the prasiolite which is 23.70 cts and is 18.0 mm. in diameter.
Next is a 19.40 cts. amethyst which is 17.0 mm across.
And finally, the citrine which is 5.80 cts and 12.0 mm.
I don't often cut smoky quartz. However, this one was a badly chipped stone that a local jeweler provided so it was a good "preform" use as a starting point for additional experiments with the UT Fantasy machine.
The end result is 22.99 carats, and 23.2 x 14.5 mm.
Here are a couple more citrines cut with concave facets on the pavilion where the mandrel was at an angle.
The first is 9.77 carats and measures 18.8 x 10.3 mm.
The second is 10.85 cts, 21.1 x 9.0 mm.
I will be heading off to Tucson in a few more weeks. Meanwhile I will be working on finishing off rough acquired in 2018. Only a dozen pieces left. But some are rather large so odds are, There will be some of them waiting for me when I return home.