ITEM DETAILS - sizes may vary because its natural gemstones made by nature sizes are around 0.25-0.50 inches (5-8 mm) Aquamarine (color), a shade between green and blue; Aquamarine (gemstone), a type of blue beryl. ~ Healing ~ Inner power strength Soothing Calming Safe travel on water Cleansing Meditation Serenity Peace Prophecy Inspiration Tranquility Aquamarine is helpful to sore throats, swollen glands and thyroid problems. It regulates hormones and growth. Boosts the immune system and alleviates overreactions, such as hayfever or allergies.