Colored Stones Grading

The Colored Stones Grading online course is designed to expand one's practical knowledge for use in the gem business world. It is a critical bridge between the gemological scientific world and the gem and jewelry trade, designed to significantly shorten the period it generally takes to obtain the practical experience required to be a player in the trade. Gem traders, gem hobbyists, gemology graduates, trade professionals with basic gemological knowledge, career gemologists, appraisers or valuers, and others who are or intend to be part of the gem business, are all suitable for this course. Graduates of the course will understand and be proficient at grading, evaluating and pricing of colored stones.

This is the most comprehensive grading course for colored stones in the market and truly unique. There is nothing else available like it. Imagine leapfrogging directly from theory to practice - a quantum leap that shaves off years in gaining the necessary experience for the business world. This is exactly what the course offers. Taking the Colored Stones Grading course would provide an essential upgrade to a career in the gems and jewelry world. The knowledge and skills provided within the course will allow the student to judge a gem's quality and price it accordingly. Course graduates would acquire the tools and abilities that would serve them in positions such as gem and jewelry valuators, auctioneers and traders.

This course will introduce you to a wide variety of the most common gems available in the world trade and explain how color, geographical origin, treatment, optical phenomena and other attributes define their quality and determine their value. The gem varieties covered are:

  1. Ruby
  2. Emerald
  3. Sapphire (Blue and fancy colors)
  4. Beryl (Aquamarine, Green, Red, Heliodor/Golden Beryl, Morganite)
  5. Chrysoberyl (Alexandrite and Cat's Eye)
  6. Garnet (all traded varieties)
  7. Iolite

  1. Peridot
  2. Quartz (Amethyst, Citrine, Smoky Quartz, Rose Quartz, Prasiolite)
  3. Spinel
  4. Tanzanite (violet/blue and fancy colors)
  5. Topaz
  6. Tourmaline (all traded varieties)
  7. Zircon

Using the significant database of real gem online images, as well as an actual gem-like samples kit, students will be able to practice sorting and pricing based on up-to-date prices, at a level that in real life would take years to achieve. It is a highly recommended course for any gemologist with a relation to the gem business, providing you with the needed knowledge and skills.

This course will also acquaint you with some of the most advanced and revolutionary digital color communication online tools for defining, grading and pricing of colored stones, powered by Gemewizard®. As a student of the course, you shall be assigned a class and a teacher, an experienced instructor who will accompany you for the entire duration of the course, answer your queries, check your assignments and tests and monitor your progress. Additionally, you will also have the possibility to communicate with other students of your class to share insights and discuss issues.

Graduates of the course shall receive a GW Colored Stones Grader diploma.

Students will learn:

  1. Definitions and grading-rulers of gems' attributes, such as color, transparency, clarity, and cut.
  2. The evaluation techniques commonly used by the gem trade.
  3. The potential effect of each attribute on the gem's price in the world trade.
  4. The effect of other factors, such as country of origin, enhancements, pleochroism, optical phenomena and size, on the grading and pricing of a gem.
  5. Gem definition borders, commercial names and misnomers, including different perceptions of each market around the world.
  6. How to grade gems against actual and digital master rulers.
  7. How to use the Gemewizard online tools for color communication, grading and pricing of gems.

Students will receive:

  1. A fully illustrated Colored Stones Grading course notes.
  2. Access to the online course materials, including hundreds of gem images, sorted by quality.
  3. Access to over 100 online exercises of quality sorting and price calculations.
  4. A student gem kit comprising 25 glass-made gem samples, depicting important shades of colored stones. (The kit remains with the student after the course and can be used as a color master ruler)
  5. A 1-year subscription to All Gemewizard products, including GemePrice™ - an online pricing system and pricelist for diamonds and gemstones.

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