One of a kind Sugilite Horse sculpture with an Opal eye. Sugilite is a rare mineral named after Ken-ichi Sugi, a Japanese geologist who first discovered the material in 1944 on the Japanese island Shikoku. Sugilite is believed to generate positive energy to protect against and overcome negative emotions and situations. Thought to be a nurturing gemstone, sugilite offers release from worries. It also promotes positive emotions to help relieve stress, establish peace of mind and emotional healing.