{"product_id":"rocksmins-streak-plate-for-minerals-streak-test-mohs-hardness-test-10-pcs-white-for-kid","title":"Rocksmins Streak Plate For Minerals Streak Test \u0026 Mohs Hardness Test 10 Pcs White, For Kid","description":"\u003cp\u003eThe Streak Test Is A Way Of Determining The Color Of A Mineral In Powdered Form. A Specimen Of The Mineral Is Placed Against A Piece Of Unglazed Porcelain Plate (Known As A Streak Plate) And Scraped Across The Surface Of The Plate. If A Powdered Residue Is Left Behind, The Color Of That Powder Is Known As The MineralS Streak Color. The Observer Must Determine If The Mark Left On The Streak Plate Is A Genuine Powder Or If It Is Composed Of Granules Or Broken Fragments. These Streak Plates Are Approximately 2 X 2 In Size And About 3\/16 Thick. They Are A Good Size For Classroom, Field, And Laboratory Use. The Black Plate Allows For Easier Examination Of A White Mark To Determine If It Is A Powder Or If It Is Granules Or Broken Fragments.\u003c\/p\u003e","brand":"rocksmins","offers":[{"title":"Default Title","offer_id":46619944321180,"sku":"WBTOYB07FZ17364","price":22.48,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0675\/9904\/0668\/files\/515821ebFAL.jpg?v=1775122026","url":"https:\/\/toytooth.com\/products\/rocksmins-streak-plate-for-minerals-streak-test-mohs-hardness-test-10-pcs-white-for-kid","provider":"Toytooth","version":"1.0","type":"link"}