Vintage magnifying glass on a chain ( jewellers loop). This interesting item is known as a jewellers loupe, used to identify Hallmarks on jewellery etc or to read small writing. There is no intrinsic value to the metal, just gold coloured.
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4cm round 40 cm length.
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Jeweller's loupes have a long and interesting history, dating back to the development of magnifying lenses in ancient times. While the concept of magnification was understood early on, the specific tools we recognize as jewelers' loupes emerged in the 17th century.
Early Development:
Ancient Lenses:
The use of lenses for magnification can be traced back to ancient Egypt, Mesopotamia, Greece, and Rome, where they were used for various purposes, including possibly starting fires.
Spectacles and Telescopes:
The development of spectacles in the 13th century and the telescope in the 17th century further advanced lens technology.
Microscope:
The invention of the microscope in the 17th century also played a role in the development of loupes, as it demonstrated the potential for magnification in detailed observation.
The Rise of the Jeweler's Loupe:
17th Century:
The first true jeweler's loupes were created in the 17th century, likely by simple handheld lenses that allowed jewelers to closely inspect gemstones and metals.
1876: Surgical Loupe:
The first surgical loupe, with two lenses, was created by a German doctor in 1876, which inspired later designs.
Medical and Gemological Use:
Surgical loupes became widely used in the medical field for surgery and dentistry, while the gemology community also valued the observational abilities of loupes.
Modern Loupes:
Advancements in Optics:
Over the years, advancements in optics and materials have led to the development of more sophisticated loupes with higher magnification capabilities.
Types of Loupes:
Modern loupes can be simple lenses, compound lenses, or prismatic lenses, offering different levels of magnification and optical correction.
Standard Magnification:
10x magnification is a common standard for jewelers' loupes, as it is useful for inspecting gemstones and identifying inclusions.