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  2. Touchstone (assaying tool) - Wikipedia

    en.wikipedia.org/wiki/Touchstone_(assaying_tool)

    Drawing a line with gold on a touchstone will leave a visible trace. Because different alloys of gold have different colors (see gold), the unknown sample can be compared to samples of known purity.

  3. 'Antiques Roadshow': $30 Ring Turns Out To Be Worth Fortune - AOL

    www.aol.com/entertainment/2014-02-18-antiques...

    We used the diamond tester just to be sure, but in fact it does test as diamond, not as CZ. What you have is a ring that looks like it's eight to 10 carats from the top, and ... it's a diamond.'

  4. The 12 best places to buy jewelry online in 2025 - AOL

    www.aol.com/lifestyle/best-places-to-buy-jewelry...

    From Brilliant Earth to Baublebar, we tracked down all the best places to buy jewelry online, ... Best for diamond jewelry: Brilliant Earth. Best for lab-grown diamond jewelry: VRAI.

  5. A Comprehensive Guide to Buying the Perfect Diamond Jewelry - AOL

    www.aol.com/comprehensive-guide-buying-perfect...

    Before starting the process of buying a diamond, it’s crucial to have a clear understanding of the 4Cs. Each of the 4Cs—cut, color, clarity, and carat—are characteristics that will help you ...

  6. Diamond simulant - Wikipedia

    en.wikipedia.org/wiki/Diamond_simulant

    A diamond simulant, diamond imitation or imitation diamond is an object or material with gemological characteristics similar to those of a diamond. Simulants are distinct from synthetic diamonds , which are actual diamonds exhibiting the same material properties as natural diamonds.

  7. Testor Corporation - Wikipedia

    en.wikipedia.org/wiki/Testor_Corporation

    Testor Corporation (or Testors) is an American manufacturer of tools and accessories for scale model kits.The business is based in Rockford, Illinois, and is part of RPM International. [1]