Gemini Birthstones: Significance, Background, Advantages, and Applications Gemini gemstones include moonstone and the gorgeous white pearl. These priceless stones are believed to represent Geminis' brilliance, independence, and composure in social settings. Other Gemini birthstones include citrine and the blue hues of apatite, agate, and aquamarine. It is often recognized that a citrine stone's yellow or orange hue bestows sentiments of coziness, joy, and zeal on its owner. The various shades of blue found in apatite, agate, and aquamarine represent Gemini's innate ability to communicate freely, maintain a high level of energy, and show others love