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Ron Perelman's $410m insurance trial is testing the limits of art valuation

The Art Newspaper

The insurers dispute the damage, as well as Perelman’s claim that he never attempted to sell the works afterward. But how does a market, increasingly professionalised, complex and litigated, quantify a quality as elusive as “oomph”? And why does it take seven years—and millions in legal fees—to do so?

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Why Get a Diamond Appraisal for Your Engagement Ring

GIA 4Cs

A diamond appraisal is an evaluation of a diamond or piece of diamond jewelry, usually for insurance or estate purposes. An appraisal may be needed for a variety of reasons (insurance, donation, estate, divorce, etc.). For example, an insurance replacement value is generally much higher than a fair market value.

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The Rise of Vintage Luxury

Art Peritus

As an avid collector and wearer of vintage couture, I’ve personally experienced firsthand the magnetism of these timeless treasures—and as an appraiser, I’ve seen how important it is to accurately understand their value for estate tax, insurance coverage, and equitable distribution.

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Passion Assets: A True Love of Collecting

Art Peritus

According to the insurance firm Marsh McLennan , luxury assets have grown in value by 123% over the past decade, establishing themselves as a meaningful asset class. However, the qualities that make passion assets so precious to collectors also expose them to unique risksrisks often not covered by standard homeowners insurance policies.

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Office Hours Information from March 2025

International Society of Appraisers

There are different marketplaces depending on many factors, including: urgency to sell, quantity, condition of the property, and the quality of the items. What is the quality of diamond jewelry? It has similar qualities. It is our responsibility to be familiar with various market levels and marketplaces.

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What Does a Jewelry Appraiser Actually Do?

La Jolla Gem Appraisal

We assess the quality of the materialssuch as gold, platinum, or silverand identify any gemstones, noting details like carat weight, color, clarity, and cut quality. A piece appraised for insurance replacement has a very different value than one being appraised for resale or estate division.

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How Much Should an Engagement Ring Cost?

GIA 4Cs

Lastly, don’t forget to leave room in your budget for additional expenses, such as resizing, engraving, rush orders or ring insurance. This depends widely on the quality of the metals and the gems and whether the ring is from a well-known brand. Higher-quality accent diamonds will naturally increase the ring’s price.

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