STONE Appraising Gems and Jewelry
Appraising gems and jewelry involves opinions of value based on knowledge and research. Learn what information gemologists should include on their appraisal forms.
6 Minute Read
Types of Appraisals
Four basic types of appraisals yield four different kinds of value.
- Replacement Value
- Fair Market Value
- Wholesale Value
- Liquidation or Scrap Value
The first two values are retail amounts. The latter two are variations of wholesale rates. You’ll almost always do replacement value appraisals for gem and jewelry owners and consumers. You’ll likely conduct wholesale appraisals, too. These are done in a similar manner. Of course, in these cases you’re researching the prices a jeweler would expect to pay.
Occasionally, your customers may ask you to value a lot. If the lot is too large to examine every piece, take a sample large enough to show every variation in size and quality. Then, multiply the sample’s value by the total size of the lot. For example, if you looked at 20% of the stones as your sample, multiply your results by five.
Appraising Gems for Specialized Markets
Conducting appraisals involves researching recent sales of like items for comparison. Thus, appraising gems and jewelry like diamond earrings can be fairly simple. However, you’ll also encounter more difficult objects.
Let’s say your customer wants an appraisal for a 26-ct mint green merelani garnet. You might have…
Donald Clark, CSM IMG
The late Donald Clark, CSM founded the International Gem Society in 1998. Donald started in the gem and jewelry industry in 1976. He received his formal gemology training from the Gemological Institute of America (GIA) and the American Society of Gemcutters (ASG). The letters “CSM” after his name stood for Certified Supreme Master Gemcutter, a designation of Wykoff’s ASG which has often been referred to as the doctorate of gem cutting. The American Society of Gemcutters only had 54 people reach this level. Along with dozens of articles for leading trade magazines, Donald authored the book “Modern Faceting, the Easy Way.”
Jewelers Pricing Survey
Green Tourmaline (Verdelite) Buying Guide
Jewelry and Gemstone Insurance: Nine Questions You Need to Ask
How to Establish a Network of Gem Trade Contacts
What is the Best Lap for Polishing Sapphire?
Seven Famous Pearls and Their Histories
Opal Stones and Gems: Value, Price, and Jewelry Information
Seven Stunning but Delicate Engagement Ring Stones
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!