The primary reference matching your request is the by Bruce J. Knuth (often cited in Russian as Брюс Дж. Кнут, "Справочник ювелира" ). Overview of the Handbook
Detailed information on the composition of precious metal alloys and official standards for gold and silver. spravochnik dlja juvelira
It serves as a counter reference to help explain technical aspects of gems and metals to consumers. The primary reference matching your request is the
While Knuth’s work is the most prominent "Sprovochnik," other valuable guides include: Overview of the Handbook Detailed information on the
It provides immediate access to "hard-to-find" information like melting points and heating properties that are often missing from standard textbooks.
The handbook provides essential data for practicing jewelers, students, and retail professionals:
Includes an expanded list of gemstones with their physical characteristics, diagrams for over 40 cutting styles , and official diamond grading standards.