Detailed information on the composition of precious metal alloys and official standards for gold and silver.
It serves as a counter reference to help explain technical aspects of gems and metals to consumers. spravochnik dlja juvelira
Contains weight conversion charts, chemical preparation formulas, and comprehensive ring size gauges. Detailed information on the composition of precious metal
The handbook provides essential data for practicing jewelers, students, and retail professionals: chemical preparation formulas
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
It provides immediate access to "hard-to-find" information like melting points and heating properties that are often missing from standard textbooks.