{"id":2792,"date":"2013-01-27T15:03:47","date_gmt":"2013-01-27T20:03:47","guid":{"rendered":"http:\/\/www.jewelry-secrets.com\/Blog\/?p=2792"},"modified":"2016-09-01T14:39:40","modified_gmt":"2016-09-01T18:39:40","slug":"rockwell-scale-vs-the-mohs-scale","status":"publish","type":"post","link":"https:\/\/www.jewelry-secrets.com\/Blog\/rockwell-scale-vs-the-mohs-scale\/","title":{"rendered":"ROCKWELL SCALE VS THE MOH’S SCALE"},"content":{"rendered":"
\"Rockwell<\/div>\n

Most people who deal with Gemstones & Jewelry, whether you’re Buying, Selling, Collecting or just Studying, are pretty familiar with the Moh’s Scale of Hardness.<\/p>\n

\nThe Moh’s Scale was developed by Friedrich Mohs in 1812<\/strong>. It lists Gemstones and Minerals on a Scale from 1-10 for their Hardness and Durability (like a Scratch Test).<\/p>\n

\nThis Simple Chart makes for Good Reference when Explaining to customers how hard a Particular Stone is as compared to other Popular Gemstones and even Diamonds (which is a 10).<\/p>\n

\nYou can quickly see that Ruby and Sapphire (Corundum) is at the Top of the Charts, while Pearl and Gold sit at just 2.5 on the Scale.<\/p>\n

\nHere is the scale below…<\/strong><\/p>\n

The Moh’s Scale of Hardness<\/h2>\n

\n\"Mohs<\/p>\n

\nFrom 1 – 10, the Gems on the Moh’s Scale of Hardness are:<\/strong><\/p>\n

<\/p>\n

    \n
  1. TALC – 1<\/li>\n
  2. GYPSUM – 2<\/li>\n
  3. CALCITE – 9<\/li>\n
  4. FLUORITE – 21<\/li>\n
  5. APATITE – 48<\/li>\n
  6. FELDSPAR – 72<\/li>\n
  7. QUARTZ – 100<\/li>\n
  8. TOPAZ – 200<\/li>\n
  9. CORUNDUM – 400<\/li>\n
  10. DIAMOND – 1600 (Blue Numbers are Absolute Hardness)<\/li>\n<\/ol>\n

    <\/strong><\/p>\n

    As you can see, this 10 item list is Pretty Slim (Pearl is where?<\/strong>), the ENTIRE <\/strong>Moh’s Scale List (really large list) is in my post here: The Moh’s Scale!<\/a><\/p>\n

    \nWhat’s interesting is the fact that Jewelers often refer to Metals on the Moh’s Scale<\/strong> as well.<\/p>\n

    \nCommon Metals used in Jewelry, Bracelets, Rings and Pendants are found in the grid below…<\/p>\n\n\n
    \n
      \n
    • Lead – 1.5<\/strong><\/li>\n
    • Tin – 1.5<\/strong><\/li>\n
    • Zinc – 2.5<\/strong><\/li>\n
    • Gold – 2.5 – 3<\/strong><\/li>\n
    • Silver – 2.5 – 3<\/strong><\/li>\n
    • Aluminum – 2.5 – 3<\/strong><\/li>\n
    • Copper – 3<\/strong><\/li>\n
    • Brass – 3<\/strong><\/li>\n
    • Bronze – 3<\/strong><\/li>\n
    • Nickel – 4<\/strong><\/li>\n<\/ul>\n<\/td>\n
    		\n