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Vintage Italian Penknife Necklace

About Details History
A tiny, stabby (it's SHARP!) 9k gold knife hangs from a slim gold chain. Textured cross-hatched diamonds decorate the outside, and the foldout blade is stamped with a slew of hallmarks, including the mark of an Italian maker: "uno a erre".  Made around 1950. 

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  • Materials: 9k gold knife, 14k chain
  • Age: knife is c. 1950, chain is new
  • Condition: excellent
  • Size: 3/4" blade, 1 1/4" knife and bale. Chain is 18"
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RETRO (1935 - 1945) World War II marked the shift from Art Deco to retro, as yet another war (and the subsequent materials rations) dictated what was available on the jewelry market. Platinum was reserved for military use, so jewelers began relying heavily on gold and experimenting with colored alloys and different finishes. Retro jewelry designs are marked by asymmetry, motifs borrowed from industrial design, and exaggerated scale. Thanks to a hugely successful advertising campaign begun in the 1940s and funded by De Beers, the phrase “a diamond is forever” was coined and diamond rings were touted as the ONLY acceptable type of engagement ring. Carefully worded ads instructed men on how to choose a stone, and what to spend (“two months salary!”). The Gemological Institute of America developed the so-called “4Cs” of diamond grading, which was a scientific system for measuring the color, clarity, cut and carat weight of every single diamond. The costume jewelry industry, having only been established a few decades before, began to flourish. Centered in Providence, Rhode Island, and surrounding New England towns, companies like Trifari, Monet, Hobe, and Vendome prospered as consumers gobbled up inexpensive machine-made jewels.
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About Details History
A tiny, stabby (it's SHARP!) 9k gold knife hangs from a slim gold chain. Textured cross-hatched diamonds decorate the outside, and the foldout blade is stamped with a slew of hallmarks, including the mark of an Italian maker: "uno a erre".  Made around 1950. 

less
more

  • Materials: 9k gold knife, 14k chain
  • Age: knife is c. 1950, chain is new
  • Condition: excellent
  • Size: 3/4" blade, 1 1/4" knife and bale. Chain is 18"
less
more
RETRO (1935 - 1945) World War II marked the shift from Art Deco to retro, as yet another war (and the subsequent materials rations) dictated what was available on the jewelry market. Platinum was reserved for military use, so jewelers began relying heavily on gold and experimenting with colored alloys and different finishes. Retro jewelry designs are marked by asymmetry, motifs borrowed from industrial design, and exaggerated scale. Thanks to a hugely successful advertising campaign begun in the 1940s and funded by De Beers, the phrase “a diamond is forever” was coined and diamond rings were touted as the ONLY acceptable type of engagement ring. Carefully worded ads instructed men on how to choose a stone, and what to spend (“two months salary!”). The Gemological Institute of America developed the so-called “4Cs” of diamond grading, which was a scientific system for measuring the color, clarity, cut and carat weight of every single diamond. The costume jewelry industry, having only been established a few decades before, began to flourish. Centered in Providence, Rhode Island, and surrounding New England towns, companies like Trifari, Monet, Hobe, and Vendome prospered as consumers gobbled up inexpensive machine-made jewels.
less
more