4.1mm Round Cabochon Ruby Bergeon 4040P Movement Holder

4.1mm Round Cabochon Ruby Bergeon 4040P Movement HolderRubys hues vary from orangey red to purplish red and the presence of chromium is the trace element that causes the unparalleled ruby red colour. The most valuable colour is the pigeons blood variety which is a vibrant red without any orange or purple tint. Some rubies display the gemmological phenomenon called asterism where cabochon cut stones have a whitish star on top of the dome. This is created by fine intersecting rutile needle inclusions. ;

Handle diameter at largest point Ø30mm

Shoulder to base: 70cm

large-diameter dies for fitting tension ring watch glasses

Planishin press: Ø100mm

8 * 2500 Grit Sandpaper

Applications: Timepiece repair

8 Analog Input Ports: A0~A7

Ground & lapped finished measuring faces

Industrial grade high-speed steel for higher durability and sturdiness

1 * Wrist Strap

Color: Black + Red

Two step pull out