Crystals

They're thought to promote the flow of good energy and help rid the body and mind of negative energy for physical and emotional benefits. Historically...

Many plants have specialized cells, called crystal idioblasts, that contain single or multiple needle-like crystals that appear to serve a primary fun...

Abstract. Raphides, needle-shaped calcium oxalate crystals in tissues of many plants, have been thought to play defensive roles against herbivores wit...