Gemstone faceting: cutting a huge quartz stone (portuguese cut)

The video shows the different steps of cutting and polishing a gemstone, faceting in particular. Im cutting a large piece of quartz in the portuguese design. I use a facetron machine . The various laps used are nickel bond diamond laps, 100, 260, 360, 600, and 1200 grit laps. The prepolish lap i used is a lightning lap 3000 grit lap.
The polishing lap i used is a gearloose lapidary creamway lap. The stones finished weight was 192.5 carats and the total time cutting was 30 hrs. and 35 min.. There were 5 tiers of facets on both the pavillion and crown. Total number of facets on this portuguese
cut design is 177.

update: 3/12/19 : I have corrected the color of the captions in all my later videos. they have a black background around the letters.

Here are links to other gem cutters channels: https://www.youtube.com/channel/UCIc6rVal0VKM4-kSgH16uYA
https://www.youtube.com/channel/UCrWOxwjXUTdrHe8hAk2dZ1g
contact me at gemsbymbk@gmail.com
My etsy store is :
https://www.etsy.com/shop/Gemsbymbk?ref=seller-platform-mcnav

Видео Gemstone faceting: cutting a huge quartz stone (portuguese cut) канала Gems by mbk