2.1ct Oval Faceted Ruby 7.4x6.3mm mainspring winder UV/IR Protection: DIN16 Levels

UV/IR Protection: DIN16 Levels

the simple handling

Operating Temperature: -20 ~ 60°C

- They are so simple to use and give a great view

2.1ct Oval Faceted Ruby 7.4x6.3mm mainspring winder UV/IR Protection: DIN16 LevelsRubys 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. ;