... ,water mud,water bead,crystal mud,rainbow clay color : rainbow size:3-4mm high quolity but lower price Products name :crystal soil,water mud,water ... 's non-toxic, odorless, and clear 3) It can absorb water up to 50-100 times of its original weight, and ... , yellow, purple, orange, green,light green, light blue and transparent hot selling rainbow color for plant crystal soil