ESYEM Material: natural crystal cluster, rough and raw. shape: irreguar, freeform. Size Details: Length: 3.2-5.5 inch Weights about 150-600 gram Due to the crystals are , the crack or chipped will be normal,the sizes and colors of them are different with each other, we will what we have by random. Clusters are wonderful for crystal grids,massage,reiki,display,protection,fengshui,home decor,collection,curios cabinet, wirework,absorb negative ,changing bad vibrations,expanding the mind.Natural Rock Crystal Stone: Natural Bismuth ore crystal geode stone is a form of natural rock crystal to create a wonderful crystal cluster to show its natural beauty with a beautiful array of colors. It will look shinning when you place it under the sun or well-light area. Note -- The cluster will be choosen at random and you will receive one(s) similar with the picture shown.Each one will be due to the raw crystal in term of colors,shape and texture. Natural Crystal Decoration -- The crystal geode cluster is a reiki ornament for office,garden or setting at your desk table,sacred space, altar.Also a gift for the crystal lover or mineral collectioner,a ideal addition to a collection, Decoration,display, curios cabinet,or crystal grid. Crystal stones are also very suitable for DIY crafts or gifts. Very suitable for fish tanks, gardening, desktop decorations, etc. Made of natural crystal, allowing you to immerse yourself in the charm of nature.