8.5g, 2.7cm. Ametrine is basically amethyst turning into citrine. Amethyst promotes faith, receptivity and focus. Alleviates grief, brings comfort and peaceful deep sleep. It balances the psyche, harmonizes the hormonal system, synchronizes the hemispheres of the brain and cleans blood vessels, ensures blood flow to the brain. Citrine then brings solar optimism. Nice combination, you see.