Advice for Determining Gemstone Value


Step 4: Gem Grading

Lesson 9

Many new gemologists buy low-quality gems believing they’ve found a real bargain. However, judging gemstone value is very complex. You need to consider many factors before making a decision to buy. I’ve designed four exercises to help novices practice determining gem values.

Of course, these exercises have limits. You can’t always accurately judge gem colors through pictures on a computer monitor. Thus, when possible, I’ll give you image comparisons to work with. Also, values vary over time, so I’ll give you prices to use for each exercise.

Also, be sure to review these articles:

Is it Worth It? Four Gemstone Value Exercises

You’re looking for gems for your custom jewelry settings. You want stones that will complement the quality and labor you’ve put into your settings. Of course, you want them at prices that will allow profit. While shopping at a local gem show, you find the following items: a tourmaline, a Thai ruby, an African ruby, and an emerald.

Tourmaline Gemstone Value

You come across this tourmaline with a distinctive personality. You don’t find this …

Premium Article

This is a Premium Article. Please become a member to read this entire article and gain access to hundreds more like it.

Membership options

Full Article Details


Content Length 1374 words
Reading time 6 min 52 sec

Here's what you get if you unlock this article:

  • Is it Worth It? Four Gemstone Value Exercises
  • Tourmaline Gemstone Value
  • Thai Ruby Gemstone Value
  • African Ruby Gemstone Value
  • Emerald Gemstone Value

Plus, additional member-only benefits:

  • Exclusive access to other premium articles and courses
  • Unlimited access to our gem pricing guide
  • Participate in our member-only forums
Membership options