Blue Chrysanthemum Necklace Grade AAA. Size: 19mm(Chrysanthemum), 6mm(Crystal) Length: 18-20.5''//45-52cm(Necklace) Weight: 343.9 Grams Clasp: Magnet Clasp Chrysanthemum Stone is a very rare gemstone. Most of the places are prohibited to mine now. It is very rare because it is often designated as a natural treasure. The price will definitely continue to rise, so please get one soon if you need one. Blue Chrysanthemum Stone (often just Chrysanthemum Stone) is a unique rock with flower-like patterns, valued for promoting joy, change, harmony, and courage, blending earthy stability with spiritual growth, helping overcome negativity, find purpose, and foster unity through its calming, centering energy. Its composition is a dark matrix (limestone/shale) with mineral inclusions (celestine, andalusite, quartz) forming the "flowers," and while typically black/white/gray, blue variations symbolise relief and new beginnings.