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July 09, 2008
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  Home > Help > Ordering Guide > Gemstone Appraisals

About gemstone appraisals

Gemstone values tend to increase over time, particularly top-quality gemstones, which are scarce and always in high demand.

Although values tend to increase over time, there can be some fluctuation in the appraised values of any particular gemstone. To a large degree, this fluctuation is due to supply and demand, individual subjectivity and type of appraisal.

Icgems.com provides for a 15-day inspection period, which allows ample time for the customer to have an independent appraisal done, if the customer desires so. Our experience has been that insurance appraisals typically result in a valuation of our gemstones at 1,5 to 5 times the purchase price for the gemstone, if the appraiser provides an unbiased and fair evaluation.

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Supply and Demand

Both supply and demand can contribute to gemstone value fluctuations. An example of supply-side value increase would be a gemstone which has a limited geographic sourcing, such as Tanzanite or Tsavorite. If supply were to be interrupted (area and mine f looding, for example) and demand remain constant, it could be expected that the value of such a gemstone would increase significantly. The reverse could hold true as well, such as a new mine and source located with abundant supply for a gemstone that has previously been in scarce supply.

Individual Subjectivity

To an extent, the personal preferences of the appraiser can bear on appraised value of a gemstone. Cut, color, clarity, and carat weight essentially determine the desirability of a given gemstone variety. The weighting of each of these four variables can be influenced by preferences of the appraiser. For example, Rubies which are true-red in color may be graded and valued higher than those that are slightly-purplish-red by a given individual appraiser, and the reverse may be true for a different individual appraiser.

Type of Appraisal

Replacement cost appraisals, commonly referred to as insurance appraisals, are designed to cover an individual in the event of loss of property, so these tend to result in higher valuations for gemstones and jewelry, because they are intended to provide coverage for replacement in a market that has fluctuating valuations.

Icgems.com provides for a 15-day inspection period, which allows ample time for the customer to have an independent appraisal done, if the customer desires so. Our experience has been that insurance appraisals typically result in a valuation of our gemstones at 1,5 to 5 times the purchase price for the gemstone, if the appraiser provides an unbiased and fair evaluation. If an appraisal is done by a third party that has an interest in selling the Icgems.com customer gemstones, this could introduce bias into the appraisal process.

To put it another way, if you were in the business of selling gemstones to your customers, would you be likely to rave about what an excellent purchase bargain you obtained by taking your business elsewhere? Icgems.com recommends that independent appraisals be done by parties that have no interest in the outcome of the appraisal, except for providing a fair and accurate assessment of gemstone value.

The jewelry appraiser should also be a Graduate Gemologist (GG) of the Geological Institute of America (GIA), or an FGA of the Gemmological Institute of Great Britain. A gemological degree grants assurance that the individual can identify and grade gem materials. It does not, however, provide the training necessary to be a proficient jewelry appraiser. Ideally, the appraiser should also have a background in the jewelry market.

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