Thank you for viewing. Material: Natural agate *Shipping will be random. The central piece is also natural Nanhong agate, with a diameter of 14mm. This is an extra-large piece, and upon close inspection, you can see the texture of natural agate. The red color is not a uniform red throughout; there are local gradations of slightly lighter red. The previous chain is made of 2.2mm small natural Nanhong agate beads. The length of the necklace bead section is 42cm, and the total length is approximately 47cm. This is a very substantial product, and while the natural agate may have minor natural imperfections, they do not affect its usability. Shipping is scheduled within 10 business days. Thank you.