Spravochnik Dlja Juvelira -

Contains weight conversion charts, chemical preparation formulas, and comprehensive ring size gauges.

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

Справочник ювелира. Брюс Кнут стоимостью 699 руб. spravochnik dlja juvelira

Published in its Russian translation by in 2008, this 142-page spiral-bound manual has become a standard bench reference in the industry. Unlike many instructional texts, it is not a "how-to" guide for making jewelry but a technical data repository designed to sit directly on the jeweler's workbench. Key Content & Features

It serves as a counter reference to help explain technical aspects of gems and metals to consumers. Кнут, "Справочник ювелира" )

The handbook provides essential data for practicing jewelers, students, and retail professionals:

Detailed information on the composition of precious metal alloys and official standards for gold and silver. Published in its Russian translation by in 2008,

It provides immediate access to "hard-to-find" information like melting points and heating properties that are often missing from standard textbooks.