Fantasia Mining is a USA company based in Massillon Ohio and the manufacturer of the Fantasia brand of stones that you are ordering. These tumbled chips start with top quality natural Earth mined rough stones which are meticulously polished using our proprietary polishing technology to bring out their brilliant top quality blue color. They are extremely versitile and can be used for a multitude of purposes including Crafts, Art Projects, Terrariums, Vase Filler, Flower Pots, Jewelry Making, Crystal Grids, Reiki and much more. Each order also includes a stone information and identification card which explains the healing power lore behind the stone along with scientific information about the stones. On average most pieces are around 0.25" but there can be a little variance in size from one piece to the next. The number of stones received will vary depending on the total weight ordered as these are sold in bulk by total weight purchased and not number of pieces. Each stone is unique and no two stones will be exactly alike in regards to shape, size, color, patterns, and all other natural characteristics which can vary in the rocks due to how Mother Nature created them. This gives every order you receive a unique charm and beauty only found in the Fantasia brand of stones.