Valuing a Crazed Opal

Although the assignment discussed here involves a cracked or crazed opal, the methodology is similar for any damaged gemstone. The appraiser only has what is in front of them, and if it is a damaged gem, it must be appraised …

Duo Valuation of an Unusual Ruby

The use of pricing adjustments is relatively common, especially when the appraiser is using the cost approach. However, in assignments where the subject property falls outside of the core range of trading for that variety, such adjustments become increasingly inaccurate. …

Lab Diamond Grading Differences

Lab grading differences are becoming a hot industry issue. The differences in grades from one lab to another are problematic. Consumers are being deceived into thinking that they are buying a diamond with higher grades than the diamond really is. …

How to Grade Clarity-Enhanced Diamonds

As more companies entered into this technology, known as fracture-filling, or clarity enhanced (CE), the door became wide-open for vendors to assign the clarity grade of their choosing. While we at Northwest Gemological Laboratory have had few submissions of Yehuda …

Watches: Fake & Genuine – How to Appraise from the Insurer’s Perspective

Gemologists are trained and experienced in recognizing gems, treatments, synthetics, and outright fakes in gems and jewelry, but detecting fake watches is a dif ferent challenge altogether. Furthermore, when a watch is determined to be genuine, the appraisal value that …

Valuing Large Gems with the GemGuide

One area of misuse of the GemGuide is in pricing large gemstones beyond the largest weights listed. This can occur with any variety of gemstone and it is critical to understand what happens in the market when large gems are …

Appraising in the Tourist Market

The tourist market is its own market with very different behaviors when it comes to jewelry. Is it a rip-off or just a market where higher prices can be expected? Is buyer’s remorse a reason to allow returns to take …

Appraisal Forum Tucson 2012

In Tucson, an appraisal forum was held, developed and sponsored by the California Institute of Jewelry Training and Master Valuer International. The concept was to invite a panel of appraisal experts to discuss appraisal issues. The panel included Nancy Stacy, …

Copyright is Not a Right to Copy

An honest, upscale jeweler sends his appraiser friend the most recent password for accessing the GemGuide online. Not a big deal he thinks, as he has experienced numerous occasions with customers having copies of price guides tucked into their shirt …

Making the Mark

The practice of appraising has been exploding for more than 20 years, spurred by a small but aggressive group of trained valuators determined to make appraising a true profession. Seemingly, books have been published overnight unequal to any previously in …