{"id":4740,"date":"2011-09-20T08:30:06","date_gmt":"2011-09-20T12:30:06","guid":{"rendered":"http:\/\/www.jewelry-secrets.com\/Blog\/?p=4740"},"modified":"2015-05-29T14:07:01","modified_gmt":"2015-05-29T18:07:01","slug":"diamond-mohs-scale-of-hardness","status":"publish","type":"post","link":"https:\/\/www.jewelry-secrets.com\/Blog\/diamond-mohs-scale-of-hardness\/","title":{"rendered":"DIAMOND MOHS SCALE OF HARDNESS"},"content":{"rendered":"
\"Diamond<\/div>\n

People are under the impression that Diamonds are the hardest object on Earth and because “You Can’t Break a Diamond<\/strong>“.<\/p>\n

\nWhile this is half true, it’s far from being truthful<\/strong>.<\/p>\n

Here’s why:<\/h2>\n

\nDiamond is the hardest NATURAL object on Earth<\/strong>, but man-made Objects like Nanorods <\/strong>are harder. Nanorods are a combination of Corundum and Diamond<\/strong> mixed together. But, if we’re talking about Natural Objects from the Earth, Diamond is KING!<\/strong><\/p>\n

\nNothing Natural is Harder!<\/strong><\/p>\n

\nThe hardness of an object is basically how scratch resistant<\/strong> that object is. This is tested by scratching two different objects together. The one that leaves a mark on the other is the harder substance.<\/p>\n

\nAny object higher up the hardness scale will scratch any item that is lower, or softer<\/strong>.<\/p>\n

\nThis is why you can take your fingernail (2.5 on the Mohs Scale<\/strong>) and scratch plastic with it (1 on the Mohs Scale<\/strong>).<\/p>\n

\nAnd speaking of Mohs scale, let’s take a look…<\/p>\n

The Mohs Scale of Hardness<\/h2>\n

\nThe Mohs Scale was developed by a German Mineralogist by the name of Friedrich Mohs<\/strong> back in 1812. He came up with a list of ten common minerals<\/strong> and rated them from weakest to strongest as far as their hardness and scratch resistance goes.<\/p>\n

The Mohs Scale of Hardness is:<\/h2>\n\n\n\n\n\n\n
1:<\/td>\nTalc<\/strong><\/td>\n6:<\/td>\nFeldspar<\/strong><\/td>\n<\/tr>\n
2:<\/td>\nGypsum<\/strong><\/td>\n7:<\/td>\nQuartz<\/strong><\/td>\n<\/tr>\n
3:<\/td>\nCalcite<\/strong><\/td>\n8:<\/td>\nTopaz<\/strong><\/td>\n<\/tr>\n
4:<\/td>\nFluorite<\/strong><\/td>\n9:<\/td>\nCorundum<\/strong><\/td>\n<\/tr>\n
5:<\/td>\nApatite<\/strong><\/td>\n10:<\/td>\nDiamond<\/strong><\/td>\n<\/tr>\n<\/table>\n

You can see that on the list that Diamond is a 10<\/strong>. This is not entirely <\/strong>true. This scale is a simplified scale<\/strong> to show the minerals in order from soft to hard, but in no way does it reflect just how strong the items actually are.<\/p>\n

\nThat scale is a much different scale. A list showing their true hardness is called the Absolute Hardness Scale<\/strong>, and that is shown below…<\/p>\n

Absolute Hardness Scale<\/h2>\n\n\n\n\n\n\n
Talc<\/td>\n1<\/strong><\/td>\nFeldspar<\/td>\n72<\/strong><\/td>\n<\/tr>\n
Gypsum<\/td>\n2<\/strong><\/td>\nQuartz<\/td>\n100<\/strong><\/td>\n<\/tr>\n
Calcite<\/td>\n9<\/strong><\/td>\nTopaz<\/td>\n200<\/strong><\/td>\n<\/tr>\n
Fluorite<\/td>\n21<\/strong><\/td>\nCorundum<\/td>\n400<\/strong><\/td>\n<\/tr>\n
Apatite<\/td>\n48<\/strong><\/td>\nDiamond<\/td>\n1600<\/strong><\/td>\n<\/tr>\n<\/table>\n

Now that’s an eye opener!<\/strong><\/p>\n

Look at Diamond now. 1600!<\/h2>\n

\nIt shows Diamond is 4 times harder<\/strong> than the next most natural item… Corundum<\/strong>.<\/p>\n

\"Diamond<\/p>\n

\nCorundum is the Parent Gemstone that Sapphire and Ruby<\/strong> comes from. It’s also the type of Watch Crystal <\/strong>that most fine Watches are made of to feature a scratch resistant face. :)<\/p>\n

But the list doesn’t stop here!<\/h2>\n

\nIt goes on and on…<\/strong><\/p>\n

\nIt lists Minerals, Materials, Metals, and Gemstones from 1-10 on the scale.<\/p>\n

\nIt even lists common household items<\/strong> like Glass, Knife Blades, Flint, Pencil Lead and Plaster of Paris…<\/p>\n

\nAny item in fact could be put on the Mohs Scale of Hardness.<\/p>\n

\nTake a look at the extensive list below<\/strong>…<\/p>\n

The Mohs Scale of Hardness<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Plastic<\/td>\n1<\/strong><\/td>\nNephrite<\/td>\n6 – 7<\/strong><\/td>\n<\/tr>\n
Graphite<\/td>\n1<\/strong><\/td>\nJade<\/td>\n6 – 7<\/strong><\/td>\n<\/tr>\n
Talc<\/td>\n1<\/strong><\/td>\nGlass<\/td>\n6 – 7<\/strong><\/td>\n<\/tr>\n
Pencil Lead<\/td>\n1<\/strong><\/td>\nCassiterite<\/td>\n6 – 7<\/strong><\/td>\n<\/tr>\n
Sulfur<\/td>\n1.5 – 2.5<\/strong><\/td>\nIridium<\/td>\n6.5<\/strong><\/td>\n<\/tr>\n
Gypsum<\/td>\n2<\/strong><\/td>\nKunzite<\/td>\n6.5 – 7<\/strong><\/td>\n<\/tr>\n
Alabaster<\/td>\n2<\/strong><\/td>\nPeridot<\/td>\n6.5 – 7<\/strong><\/td>\n<\/tr>\n
Rock Salt<\/td>\n2<\/strong><\/td>\nBloodstone<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Plaster of Paris<\/td>\n2<\/strong><\/td>\nQuartz<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Mercury<\/td>\n2 – 2.5<\/strong><\/td>\nRose Quartz<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Salt<\/td>\n2 – 3<\/strong><\/td>\nSmokey Quartz<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Amber<\/td>\n2.5<\/strong><\/td>\nMilk Quartz<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Ivory<\/td>\n2.5<\/strong><\/td>\nBlack Opal<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Fingernail<\/td>\n2.5<\/strong><\/td>\nFlint<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Pearl<\/td>\n2.5<\/strong><\/td>\nAventurine<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Zinc<\/td>\n2.5<\/strong><\/td>\nAmetrine<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Gold<\/td>\n2.5 – 3<\/strong><\/td>\nAgate<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Silver<\/td>\n2.5 – 3<\/strong><\/td>\nChalcedony<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Aluminum<\/td>\n2.5 – 3<\/strong><\/td>\nCitrine<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Jet<\/td>\n2.5 – 3<\/strong><\/td>\nJasper<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Copper Penny<\/td>\n3<\/strong><\/td>\nOnyx<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Calcite<\/td>\n3<\/strong><\/td>\nCarnelian<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Limestone<\/td>\n3<\/strong><\/td>\nAmethyst<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Shell<\/td>\n3<\/strong><\/td>\nTiger’s Eye<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Bronze<\/td>\n3<\/strong><\/td>\nGarnet<\/td>\n7 – 7.5<\/strong><\/td>\n<\/tr>\n
Coral<\/td>\n3<\/strong><\/td>\nRhodolite<\/td>\n7 – 7.5<\/strong><\/td>\n<\/tr>\n
Barite<\/td>\n3 – 3.5<\/strong><\/td>\nIolite<\/td>\n7 – 7.5<\/strong><\/td>\n<\/tr>\n
Malachite<\/td>\n3.5 – 4<\/strong><\/td>\nTourmaline<\/td>\n7 – 7.5<\/strong><\/td>\n<\/tr>\n
Azurite<\/td>\n3.5 – 4<\/strong><\/td>\nSteel File<\/td>\n7 – 8<\/strong><\/td>\n<\/tr>\n
Fluorite<\/td>\n4<\/strong><\/td>\nZircon<\/td>\n7.5<\/strong><\/td>\n<\/tr>\n
Platinum<\/td>\n4 – 4.5<\/strong><\/td>\nTungsten<\/td>\n7.5<\/strong><\/td>\n<\/tr>\n
Iron<\/td>\n4 – 5<\/strong><\/td>\nMorganite<\/td>\n7 – 8<\/strong><\/td>\n<\/tr>\n
Meteorite<\/td>\n4.5<\/strong><\/td>\nBeryl<\/td>\n7.5 – 8<\/strong><\/td>\n<\/tr>\n
Palladium<\/td>\n4.75<\/strong><\/td>\nAquamarine<\/td>\n7.5 – 8<\/strong><\/td>\n<\/tr>\n
Apatite<\/td>\n5<\/strong><\/td>\nEmerald<\/td>\n7.5 – 8<\/strong><\/td>\n<\/tr>\n
Tooth Enamel<\/td>\n5<\/strong><\/td>\nSpinel<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Lapis<\/td>\n5 – 5.5<\/strong><\/td>\nTopaz<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Obsidian<\/td>\n5 – 5.5<\/strong><\/td>\nSmokey Topaz<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Hematite<\/td>\n5 – 6<\/strong><\/td>\nBlue Topaz<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Knife Blade<\/td>\n5.5<\/strong><\/td>\nYellow Topaz<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Opal<\/td>\n5.5 – 6<\/strong><\/td>\nChrysoberyl<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Turquoise<\/td>\n5.5 – 6<\/strong><\/td>\nAlexandrite<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Magnetite<\/td>\n5.5 – 6.5<\/strong><\/td>\nCat’s Eye<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Rhodonite<\/td>\n5.5 – 6.5<\/strong><\/td>\nCubic Zirconia<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Titanium<\/td>\n6<\/strong><\/td>\nChromium<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Rhodium<\/td>\n6<\/strong><\/td>\nTungsten Carbide<\/td>\n8.5 – 9<\/strong><\/td>\n<\/tr>\n
Feldspar<\/td>\n6<\/strong><\/td>\nCorundum<\/td>\n9<\/strong><\/td>\n<\/tr>\n
Orthoclase<\/td>\n6<\/strong><\/td>\nSapphire<\/td>\n9<\/strong><\/td>\n<\/tr>\n
Rutile<\/td>\n6 – 6.5<\/strong><\/td>\nRuby<\/td>\n9<\/strong><\/td>\n<\/tr>\n
Fire Opal<\/td>\n6 – 6.5<\/strong><\/td>\nCarborundum<\/td>\n9 – 9.5<\/strong><\/td>\n<\/tr>\n
Moonstone<\/td>\n6 – 6.5<\/strong><\/td>\nMoissanite<\/td>\n9.25<\/strong><\/td>\n<\/tr>\n
Marcasite<\/td>\n6 – 6.5<\/strong><\/td>\nFullerite<\/td>\n10-<\/strong><\/td>\n<\/tr>\n
Iron Pyrite<\/td>\n6.5<\/strong><\/td>\nDiamond<\/td>\n10<\/strong><\/td>\n<\/tr>\n
Tanzanite<\/td>\n6.5<\/strong><\/td>\nNanorods<\/td>\n10+<\/strong><\/td>\n<\/tr>\n<\/table>\n

\n

Gemstones & Metals Mohs Scale<\/h2>\n

\nWhen it comes to Jewelry, this scale is usually broken down into 2 categories: Gemstones and Metals<\/strong>. So let’s take a closer look…<\/p>\n

Gemstones<\/h2>\n

\nKnowing the hardness of Gemstones is important because of the wear and tear and longevity that a stone<\/strong> can give.<\/p>\n

\nThe more durable a stone is, the more years you’ll have to enjoy it<\/strong> and pass it down from generation to generation.<\/p>\n

\nSofter stones, like Emerald, Aquamarine and Tanzanite look great, cost a lot of money, but don’t hold up well<\/strong> over the long run. They will scratch, dull up, lose their shine and even crack or break easier than harder stones will (like Alexandrite, Sapphire, Ruby and of course Diamond – the Gemstone for April<\/strong>).<\/p>\n

\nTake a look at the most common Gemstones on the Mohs Scale<\/strong>…<\/p>\n

Gemstone Mohs Scale<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Amber<\/td>\n2.5<\/strong><\/td>\nAgate<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Ivory<\/td>\n2.5<\/strong><\/td>\nCitrine<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Pearl<\/td>\n2.5<\/strong><\/td>\nJasper<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Jet<\/td>\n2.5 – 3<\/strong><\/td>\nOnyx<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Shell<\/td>\n3<\/strong><\/td>\nCarnelian<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Coral<\/td>\n3<\/strong><\/td>\nAmethyst<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Malachite<\/td>\n3.5 – 4<\/strong><\/td>\nTiger’s Eye<\/td>\n7<\/strong><\/td>\n<\/tr>\n
Azurite<\/td>\n3.5 – 4<\/strong><\/td>\nGarnet<\/td>\n7 – 7.5<\/strong><\/td>\n<\/tr>\n
Lapis<\/td>\n5 – 5.5<\/strong><\/td>\nRhodolite<\/td>\n7 – 7.5<\/strong><\/td>\n<\/tr>\n
Obsidian<\/td>\n5 – 5.5<\/strong><\/td>\nIolite<\/td>\n7 – 7.5<\/strong><\/td>\n<\/tr>\n
Hematite<\/td>\n5 – 6<\/strong><\/td>\nTourmaline<\/td>\n7 – 7.5<\/strong><\/td>\n<\/tr>\n
Opal<\/td>\n5.5 – 6<\/strong><\/td>\nZircon<\/td>\n7.5<\/strong><\/td>\n<\/tr>\n
Turquoise<\/td>\n5.5 – 6<\/strong><\/td>\nBeryl<\/td>\n7.5 – 8<\/strong><\/td>\n<\/tr>\n
Rhodonite<\/td>\n5.5 – 6.5<\/strong><\/td>\nAquamarine<\/td>\n7.5 – 8<\/strong><\/td>\n<\/tr>\n
Fire Opal<\/td>\n6 – 6.5<\/strong><\/td>\nEmerald<\/td>\n7.5 – 8<\/strong><\/td>\n<\/tr>\n
Moonstone<\/td>\n6 – 6.5<\/strong><\/td>\nSpinel<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Marcasite<\/td>\n6 – 6.5<\/strong><\/td>\nTopaz<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Iron Pyrite<\/td>\n6.5<\/strong><\/td>\nSmokey Topaz<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Tanzanite<\/td>\n6.5<\/strong><\/td>\nBlue Topaz<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Jade<\/td>\n6 – 7<\/strong><\/td>\nYellow Topaz<\/td>\n8<\/strong><\/td>\n<\/tr>\n
Kunzite<\/td>\n6.5 – 7<\/strong><\/td>\nChrysoberyl<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Peridot<\/td>\n6.5 – 7<\/strong><\/td>\nAlexandrite<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Bloodstone<\/td>\n7<\/strong><\/td>\nCat’s Eye<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Quartz<\/td>\n7<\/strong><\/td>\nCubic Zirconia<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Rose Quartz<\/td>\n7<\/strong><\/td>\nCorundum<\/td>\n9<\/strong><\/td>\n<\/tr>\n
Smokey Quartz<\/td>\n7<\/strong><\/td>\nSapphire<\/td>\n8.5<\/strong><\/td>\n<\/tr>\n
Milk Quartz<\/td>\n7<\/strong><\/td>\nRuby<\/td>\n9<\/strong><\/td>\n<\/tr>\n
Black Opal<\/td>\n7<\/strong><\/td>\nMoissanite<\/td>\n9.25<\/strong><\/td>\n<\/tr>\n
Ametrine<\/td>\n7<\/strong><\/td>\nDiamond<\/td>\n10<\/strong><\/td>\n<\/tr>\n<\/table>\n

Metals Mohs Scale<\/h2>\n

\nMost Metals used for Jewelry are quite soft (2.5 on the Mohs Scale<\/strong>). This makes them malleable <\/strong>and easy to work with.<\/p>\n

\nMetals in their pure state (no Alloys mixed<\/strong>) makes up and interesting list. You can see how durable Platinum is (4.5) against Tungsten (7.5)… That’s a big difference<\/strong>.<\/p>\n

\nWho knew Titanium and Tungsten were really that tough?<\/p>\n

\nThis is why Titanium and Tungsten Wedding Rings can’t really be Sized<\/strong>. They have to be ordered <\/strong>in the correct size to begin with. Let’s hope you don’t gain weight and need to get them sized up… You’d have to purchase a brand new ring!<\/p>\n

Metals Mohs Scale<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n<\/table>\n

Looking at this list it’s easy to see how putting a Platinum Ring up against a 14k Gold Ring will scratch the Gold<\/strong> and wear the Gold down.<\/p>\n

The Harder Substance Wins!<\/h2>\n

\nBecause these Metals are so soft, alloys are introduced<\/strong> and mixed with them to make them more durable, last longer, and be tough enough to securely hold your Gemstones and Diamonds in place.<\/p>\n

\n14k Gold is actually 14 parts Gold and 10 parts Alloy. Alloys like: Nickel, Copper, Silver and Zinc<\/strong>. When people are allergic to Gold, it’s usually the Nickel Alloys they are Allergic to<\/strong>.<\/p>\n

\nMetals are not normally rated with the Mohs Scale. They are usually rated with the Rockwell Hardness Test<\/a>.<\/p>\n

\nBut since we’re dealing with Jewelry, Gold and Diamonds, the Mohs Scale is the easiest for most people and consumers to understand<\/strong>. 1-10 is a pretty simple scale.<\/p>\n

Diamonds still Break<\/h2>\n

\nDiamond may be the most durable Gemstone there is, but that doesn’t mean they won’t Chip or Break like many people think.<\/p>\n

\nDiamonds have Cleavage lines just like trees do. One good whack, hit, or strike and the Diamond could Break, Chip or Shatter.<\/p>\n

\nThe weakest and most vulnerable part of the Diamond is the Girdle<\/a> (where the Diamond gets the thinnest).<\/p>\n

Diamonds Cut Glass<\/h2>\n

\nMany people also believe that you can take a Diamond, drag it across Glass to tell if it’s real or not (please don’t try this). If the Glass Scratches, the Diamond is Genuine!<\/strong><\/p>\n

While it’s true that Diamonds CAN <\/strong>cut Glass (Glass is a 6-7 on the Mohs Scale), you’ll probably damage the Diamond as well. That’s an expensive test<\/strong>, so don’t even think about trying it!<\/p>\n

\nIf you truly want to know if a Diamond is real or not, take it into a Jewelry Store and have them run a Diamond test on the stone<\/strong>.<\/p>\n

Diamond Testers<\/h2>\n

\nA Diamond Tester will tell you in a couple of seconds if a Gemstone is a Diamond or not. Or you can just buy your own Diamond Tester Here<\/u><\/a>\"\"!<\/p>\n

\nDiamonds have been around for over a million years due to their Durability and Hardness. But to guarantee that your Diamond stays brand new forever, you do need to be careful of the edge<\/strong> and avoid knocking it or striking it. The prongs help protect a stone<\/strong>, but if you get them bent, pulled, or broken, you could harm that delicate Girdle! <\/p>\n

\nTake your ring in a couple of times a year to have it checked and cleaned<\/strong>. The Girdle is usually the first to go.<\/p>\n

\nInsuring your Diamond<\/strong> is the best way to protect yourself and your stone.<\/p>\n

\nBecause you never know when an accident may happen, even to the hardest object on Earth!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

People are under the impression that Diamonds are the hardest object on Earth and because “You Can’t Break a Diamond“. While this is half true, it’s far from being truthful. Here’s why: Diamond is the [Read More…]<\/a><\/p>\n<\/div>","protected":false},"author":2,"featured_media":4752,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,12,16,13],"tags":[],"class_list":["post-4740","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diamonds","category-gemstones","category-guides","category-metals"],"_links":{"self":[{"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/posts\/4740"}],"collection":[{"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/comments?post=4740"}],"version-history":[{"count":0,"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/posts\/4740\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/media\/4752"}],"wp:attachment":[{"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/media?parent=4740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/categories?post=4740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jewelry-secrets.com\/Blog\/wp-json\/wp\/v2\/tags?post=4740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

Lead<\/td>\n1.5<\/strong><\/td>\nPlatinum<\/td>\n4 – 4.5<\/strong><\/td>\n<\/tr>\n
Tin<\/td>\n1.5<\/strong><\/td>\nSteel<\/td>\n4 – 4.5<\/strong><\/td>\n<\/tr>\n
Zinc<\/td>\n2.5<\/strong><\/td>\nIron<\/td>\n4.5<\/strong><\/td>\n<\/tr>\n
Gold<\/td>\n2.5 – 3<\/strong><\/td>\nPalladium<\/td>\n4.75<\/strong><\/td>\n<\/tr>\n
Silver<\/td>\n2.5 – 3<\/strong><\/td>\nRhodium<\/td>\n6<\/strong><\/td>\n<\/tr>\n
Aluminum<\/td>\n2.5 – 3<\/strong><\/td>\nTitanium<\/td>\n6<\/strong><\/td>\n<\/tr>\n
Copper<\/td>\n3<\/strong><\/td>\nHardened Steel<\/td>\n7 – 8<\/strong><\/td>\n<\/tr>\n
Brass<\/td>\n3<\/strong><\/td>\nTungsten<\/td>\n7.5<\/strong><\/td>\n<\/tr>\n
Bronze<\/td>\n3<\/strong><\/td>\nTungsten Carbide<\/td>\n8.5 – 9<\/strong><\/td>\n<\/tr>\n
Nickel<\/td>\n4<\/strong><\/td>\n<\/td>\n<\/strong><\/td>\n<\/tr>\n