Identification of Antique jewelry
The second one is the GRS (GEMRESEARCH SWISSLAB), which is famous for the color gemstone test such as ruby, sapphire, emerald and so on.
The third one is the GEM & PEARL LABORATORY, which is famous for the natural pearls test.
One ruby test report from GRS [8]
Victorian natural pearls pendant report from the GEM & PEARL LABORATORY, (this pendent is one collection of editor of Bruce LUO)
Conclusion
The Europe antiques price are increasing sharply due to its excellent workmanship, Good-quality materials as well as scarcity. Besides, if people who want to buy the antique jewelry such as Victorian jewelry or Georgian jewelry, you should check the design and the special features such as hallmark.
Another way is to check whether the antique pieces have the relevant authoritative certification such GIA, GRS, or the GEM & PEARL LABORATORY to ensure its authentic.
[8] GRS. (2021). GEMSTONE REPORT. [online] Available at:
https://www.gemresearch.ch/reports/gemstone-reports. [Assessed: 15th December 2021]