We purchased a large piece of Montana  Flume Agate and sliced it like a loaf of bread.  We took
 one of those slices and cut this 38x30mm (1½“ x 1”) Cabochon, then set it in a Sterling Silver Pendant.  The stone is translucent, allowing a great view inside this permanent array of minerals.  A very interesting and pretty stone!
 
The display chain is not included.  For this Pendant, we recommend a 20” or 24” Medium Reverse Rope Sterling Silver Chain, #1116.