{
  "version": "1.0",
  "type": "rich",
  "title": "MOHS hardness scale",
  "author_name": "Evan Chen 《陳誼廷》",
  "author_url": "https://blog.evanchen.cc/",
  "provider_name": "Power Overwhelming",
  "provider_url": "https://blog.evanchen.cc/",
  "url": "https://blog.evanchen.cc/mohs-scale/",
  "description": "There’s a new addition to my olympiad problems and solutions archive: I created an index of many past IMO/USAMO/USA TST(ST) problems by what my opinions on their difficulties are. You can grab the…",
  "html": "<blockquote><b><a href=\"https://blog.evanchen.cc/mohs-scale/\">MOHS hardness scale</a></b><p>There’s a new addition to my olympiad problems and solutions archive: I created an index of many past IMO/USAMO/USA TST(ST) problems by what my opinions on their difficulties are. You can grab the…</p><footer>Evan Chen 《陳誼廷》 — <a href=\"https://blog.evanchen.cc/\">Power Overwhelming</a></footer></blockquote>",
  "width": 800,
  "height": null
}