Daily useful info
During one day's work, many different on-line sources may be useful. Here goes the links that were useful to me! Let me know yours, especially if some of them are specific to your job or country!
First of all, let's start with important data to keep in mind:
1 carat = 0,2 gramme
1 gramme = 5 carats
Need a converter ?
In order
Petit titre

