Appraisals and Lab Reports
Guideline
A professional Appraisal is required to examine a client’s item with great care and in as much detail as his/her equipment allows. This process is arms length, and void of any influence by any party, and requires a professional gemologist to adhere to strict industry guidelines. The composition of the Appraisal ought to include a color image, and where required, several images, to capture a realistic representation of the item.
The Appraisal must be dated, and any Stock Numbers, and/or Reference Numbers must be noted. A general overview of the item has to be written up, describing the item, with as much detail as necessary. Thereafter, a more detailed analysis of precious metal, center stone, and side stones has to be done, ensuring all materials are natural in origin. If any synthetics are found, they have to be mentioned as such.
For watches, any parts discovered as non-factory must be noted as such. Stamps, Hallmarks, and Weights marked on the metal must be recorded. A detailed grading of each center and side stone, plus a count of all the stones have to be prepared with much care under the microscope and 10X loupe, and documented on a worksheet and eventually on final Appraisal documents.
The worksheet is used to calculate wholesale values of each center and side stone, including metal value as well as labour costs. The total wholesale value is then multiplied by a mark up factor. 2.5% annualized inflation is added for the period the appraisal is valid, plus Sales Tax to reach a final Appraisal Valuation. For Watches, an appraiser has to identify the reference or model number of a brand, and research the Retail Value to which Sales Taxes are added. Terms & Conditions, and Limitations that govern the appraisal services provided must be disclosed to client in writing.
SEE GJAL CONDITIONS AND LIMITATIONS
Purpose
The purpose of an Appraisal document can vary depending on who is requesting the work and for what reason. Some types of Appraisals are: Wholesale, Estate, Insurance, Fair Market, Retail Insurance Replacement, and Customs. The calculations and by extension, the total valuation of the item would vary depending on the stated purpose of the Appraisal.
Updating your appraisal documentation
GJAL prepares all its Appraisals with a validity period of 5 years. This gives our clients peace of mind that the document is good for several years, and they can insure accordingly. We highly recommend you update your old appraisals upon expiration by sending us an email copy of your old appraisal, and keep your records up to date. The new appraisal would reflect current market conditions, and the final value may vary up or down accordingly.
Standard Item
Applies to loose Gems, Diamond Rings, and other finished jewellery that do not require extensive measurements and calculations. Gem weights required from client.
Complex Item
Applies to items where gemstone weights have to be calculated and where the item is highly complex and requires a lot of time. For special items that require extensive research and time, we will quote you on a per item basis at time of inspection of your valuables.
Watches
We request you organize all supporting documents such as invoices, lab certificates such as GIA, old appraisals, or any notes you have on the item to aid us. We will diligently verify the supporting documents and then provide our certified findings.
Lab Certificates are different from Appraisals in that they represent a detailed gemological analysis using advance lab equipment to identify, measure, grade, test, and document the results. Appraisers, who often may not have advanced testing equipment can then rely on Lab Certificates and proceed with their valuation work with confidence.
Guideline • It is important that any advance lab document the limitations of their equipments on the certificates they issue. The process ought to be strictly arms length, void of any influence. Terms & Conditions and Limitations that govern the Lab services provided must be disclosed to client in writing.
Purpose • The primary purpose of a Lab Certificate is to identify the material before the gemologist prepares the certificate, using the appropriate advance testing equipment, and his/her knowledge, to reach a logical conclusion based on what the data supports.
Lab Fees • GJAL provides Basic & Detailed Lab services, which are billed based on the level of testing required. In some cases, we may have to outsource the work to another Lab, which may require shipping and insurance. Our fees for Lab work will be based on the nature of the work required, and will be quoted in advance to you.
• Kassoy 10x-30x Stereo Microscope
• Gem Refractometer with Internal LED
• 1.81 Gem Refractometer Liquid (Diodomethan & Methelyne Iodine)
• Kassoy 6” Digital Caliper
• Pearl Guage 0-20mm
• Gemoro Platinum Pro Digital Scale 1001V
• Stainless Steel Tweezers
• 10x, 14x Power Triplet Loupe
• Gemmology Microscope
• Gold Testing Acid, 10K, 14K, 18K, 22K
• Hearts & Arrows Scope
• LW & SW Ultroviolet Lamp
• Daylight Corrected Diamond Grading Lamp
• LED Daylight Corrected Gooseneck Lamp
• Basalite Gold Testing Stone
• Gems & Gemology by GIA
• The Journal of Gemmology
• Ruby & Sapphire by Richard W. Hughes
• Miller’s Antiques Handbook & Price Guide
• Collecting & Classifying Coloured Diamonds by Stephen C. Hofer
• Jade by Cecilia Lam
• Diamonds by Eric Bruton
• Gems by Robert Webster
• Wristwatch Annual Magazine
• Gemmological Institute of America (GIA) Dictionary
• Rapaport Diamond Price Index
• Rapaport Newsletter
• Gems & Jewellery Newsletter by Gem-A
• Gems & Jewellery Appraising by Anna M.Miller
• International School of Gemmology Newsletter