Product size : 3"-18" PackagingDiameter : 10mm-25mm Packaging Details : Export package Its power comes to life, bridging the transformative sound of resonating pure quartz crystal with the power of sacred geometry and the Pythagorean Pyramid. Beautiful simply to look at or hang in a window and refract the light, these pyramids aren��t just pretty faces! They have substance and power. They are made of pure optically clear quartz crystal They are precisely made as only a process of a combination of machine made quartz rods and molds can do to result in precision accuracy, aligned and replicatable angles and mathematically correct sacred geometric Pythagorean Pyramid specs. (like the Pyramid at Giza). You hold the pyramid in one hand or hang it over your healing area and strike it with one of our specially made, cruelty-free strikers using your other hand. All sizes of Pyramids have longresonating tones and every pyramid is its own unique combination of multiple notes, according to the Divine Order in your life. Although we do not sell them by the notes since every pyramid places typically 4 notes, you will receive a card which tells you every note, astrological sign and chakra your pyramid sings. As with the bowls, the smaller pyramids are of higher octave, the larger pyramids are of lower octaves, but all play a mix, making them most balanced and enjoyable.