Polishing gemstones can be one of the most difficult stages of faceting. Pre-polishing plays a major role in how well a gem can take a polish. #gemcutting #gempolishing #gemstonedetective #gemlab #emeraldgemstones #emeraldcut #gia #emerald #emeraldgems #gemcutter #colombia #muzo #zambia (at China Fort Gem market) https://www.instagram.com/p/CTkR9vKBStz/?utm_medium=tumblr











