The most expensive natural resources include treasures pulled from the ocean, ancient trees, and delicacies harvested from remote corners of Earth. Here are 19 of the priciest substances Business Insider has ever covered, from least to most expensive. Retrieving the final substance on this list could cost billions and test the limits of human ingenuity. 00:00:00 - Introduction 00:00:31 - $15 per kg 00:15:40 - $17 per kg 00:21:45 - $80 per kg 00:29:35 - $121 per kg 00:34:01 - $210 per kg 00:46:34 - $990 per kg 00:52:41 - $2,500 per kg 01:02:13 - $3,500 per kg 01:07:04 - $5,000 per kg 01:16:15 - $10,000 per kg 01:21:10 - $15,000 per kg 01:25:20 - $30,000 per kg 01:31:14 - $100,000 per kg 01:37:38 - $128,000 per kg 01:52:44 - $300,000 per kg 01:58:32 - $55 million per kg 02:08:08 - $60 million per kg 02:15:22 - $175 million per kg 02:37:58 - $9 billion per kg 02:47:31 - Credits Also read "I live in a small mobile home at 81. I have everything I need": bit.ly/3YKPAYP ----------...