I have a weakness for Montana agate. They have a mysterious, opalescent quality, and the scatterings of black spots and then the odd burst or orange or pink make for very beautiful beads. In this case there are two sizes shown together, a stand of 8 mm in a matte finish and the larger strand in 10mm, with both shiny and some faceted stones, mixed together. The price is the same for either type, and per strand so you choose which size bead and finish you prefer and whether you need 16 or 18" length. I hand knot them myself and use sterling clasps. I show them in the last photo as I wear them with my own gold cable wire necklace with a montana agate in an 18k gold bezel. I love to layer beads with other personal jewelry that I make.