Identification Maker/Artist Material 
Invaluable
OCTOBER 2, 2024
Botanical illustrations offer a unique combination of scientific study and artistic allure. Pietro Andrea Mattioli – 4 folios from “Commentaries on the Six Books of Pedacius Dioscorides Anazarbeus on Medical Material,” 1565. Sold for $60 USD via Ripley Auctions (February 2024).
Penrose Appraisals
FEBRUARY 8, 2024
The concept of "unity" also is helpful - does the form, the material, the detail of this object fit within the period, or the artisan? Identifying the materials which makeup an object is important and can be challenging. Certain materials, such as gold, are recognized as being inherently more valuable than others, such as tin.
WorthPoint
MARCH 29, 2024
Once these materials were processed into malleable materials, they were pressure molded, or blow-molded, into consumer goods until around 1950. Some celluloid was made to imitate natural materials like ivory or horn. Jewelry and hair combs were both made using these materials.
Buckhead Jewelry Appraisers
NOVEMBER 15, 2023
How to Tell if Jewelry is Real: Your Key Guide A few different tests may be done to determine whether the jewelry is authentic or fake: For Precious Metal Identification 1. Knowledge and Research: Educate yourself about the specific characteristics of genuine jewelry, including its maker's marks, common flaws, and industry standards.
WorthPoint
APRIL 8, 2024
A glass blower created a blank (an undecorated piece of glassware), and an artist adept in pattern design would then come up with a template for a glass cutter to follow. Rather than mouth-blowing the glass into a desired shape, the molten material was blown into a mold, making the job easier.
John Thomas Jewelers
AUGUST 17, 2023
Their primary role is to assign value, not determine if the materials are legitimate. These influences vary depending on the type of jewelry, the materials used, and the overall appeal of the piece. Appraisers look for skill involved in its creation, or any artistic or historical significance. Who performs jewelry appraisals?
Art Advisor's Blog
JULY 11, 2019
You can search by location or by type of material to be appraised. This sort of appraiser would need certification from GIA or one of the other jewelry organizations to qualify since identification of various precious stones is a requirement. After 30 years in business, I have appraised art by hundreds of different artists.
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