Citrine

Yes, More Hexagons

Before I went off February 1st for ten wonderful days in Tucson, I was trying some variations to better understand how different facet placements would impact the resulting gem.  While there are software programs that will attempt to do that for flat facets, concave facets and fantasy variations are not included.  So I set up several stones and cut them with the same flat facet pattern but differences with the fantasy machine cuts. (Besides, faceting is more fun that sitting at the keyboard.)

The first one is a 12.61 carat lemon citrine which has all of the pavilion row of facets done with the regular mandrels for concave work.  It is 14.6 mm. across, so I managed to work in more facets than I have been using in some of the smaller hexagons.

 

Using that same flat facet arrangement, I did two somewhat smaller amethysts.  For one, a 6.60 carat, 12.8 mm. stone when done, I used a rounded fantasy wheel and made some small curved cuts.  These added some “lights” which seem to be inside the stone.

 

On the other amethyst, which finished at 5.65 carats, 11.2 mm., I added a lot more of these compound concave “facets”.  It looks like the stone is full of glitter.

 

For a totally different variation, after returning from Tucson, I tried something along the lines of the demonstration done at the USFG seminar on Fantasy cutting.  For this one, which is 5.40 carats and 11.0 mm. across,  I used a slitter and cut grooves from the culet most of the length of the corner facets.  These were left unpolished and they are reflected by the other facets to give the appearance of having many more grooves than were actually created.

 

 

Last ot 2019

The holidays did not leave much time for faceting. Got only a handful of additional gems cut in the last month from the material purchased last February in Tucson. Hopefully now that the Christmas decorations are all put away for another year there will be more time in the next month to catch up a bit. Since there are about three dozen left from the 2019 material it is unlikely all of it will be cut before the end of January and I head off to Tucson again.

Meanwhile, here are three from a parcel of nice, dark orange citrine. Initially the parcel was purchased to try out concave facets on some smaller sizes (8 to 10 mm.) After trying for a few, at least in the lighter colored material, it does not seem to be worth the extra effort. They are a bit too small for the optical effects of concave facets to make a significant difference.

The first is a 2.58 carat, 9.0 mm round which has some concave facets on the pavilion. As usual, it looks a lot better in real life than is this photo.

 

Next is a 2.58 carat, 7.8 mm square.

 

And last, a 2.03 carat octagon which is 8.2 mm. across.

Last off the dop

It feels even longer than it probably has been, but at last I finally finished the baker’s dozen stones that were dopped in preparation for the faceting demonstration the first weekend of August. Now that fall is just about here and the shows are over for a while, I hope to get back to a routine which has a lot more faceting time included.

Here is pictured one of the last off the dop – a 5.08 ct. lemon citrine which is 18.7 x 7.0 mm. and was another experiment with the fantasy machine tools I am still learning to use.

More From Faceting Demonstrations

Pictured below are a few more stones started at a local club show as part of a faceting demonstration, and then eventually finished at home later.  The previous set was from the show by the club to our north, so these are from the show put on by the club to the south.

The first is a 9.81 cts. lemon citrine that is 12.4 mm. across.

Next is a 6.12 cts. prasiolite quartz 11.6 mm. round.  For this one, the crown was shaped into a dome before a few flat facets were placed on it.

And of course, I had to include hexagons.  This lemon quartz gem is 12.2 mm. wide and weighs 7.16 cts.

This is another citrine at the other end of the color range. It is 2.39 cts. and 8.6 mm. across.

All of these gems have concave facets on the pavilion so really sparkle.  And they are all from rough material obtained in February during my Tucson adventures.

 

Did I mention that I liked hexagon shaped gems?

Did I mention that I liked hexagon shaped gems?

These were started as part of the faceting demonstration at a local rock show and then provided a base for learning more about using some other tools on the fantasy machine.

4.48 ct. smoky quartz, 10.2 mm. concave facets on pavilion and apex crown.

 

lemon citrine, 6.69 cts., 12.1 mm, compound concaves on pavilion with the slitter tool

 

5.13 cts., smoky quartz, 10.8 mm., similar to previous using slitter tool to make small compound concaves on pavilion