Fun Fact of the Day Posted on January 16, 2020 by Sonoran Conservative Man made glass has been around for around 4,000 years. Source Share this:TwitterFacebookLike this:Like Loading... Related
Glass formed by nature comment in link missed the biggest source, volcanoes, obsidian is a form of natural silica glass. LikeLiked by 1 person Reply ↓
Glass formed by nature comment in link missed the biggest source, volcanoes, obsidian is a form of natural silica glass.
LikeLiked by 1 person