Eric Walker added Why Geology Is Our Destiny - The New York Times to Gemstones and Minerals and gems

Eric Walker added a number of links to Diamond, and added Diamond to Carbon and Gemstones

Eric Walker added Diamond and Jade and Why Geology Is Our Destiny - The New York Times to Gemstones, and added Gemstones to Minerals and gems

Eric Walker added a number of topics and a number of links to Minerals and gems, and added Minerals and gems to Geology, Natural resources and Atoms, molecules, chemicals, minerals, materials and compounds

Eric Walker added Nephrite and Jadeite and ‘I Thought I Would Die’: Inside Myanmar’s Risky Pursuit of Jade - The New York Times to Jade, and added Jade to Gemstones