SRD:Crystal Ball

Crystal Ball: This is the most common form of scrying device, a crystal sphere about 6 inches in diameter. A character can use the device to see over virtually any distance or into other planes of existence, as with the spell scrying (Will DC 16 negates).

Certain crystal balls have additional powers that can be used through the crystal ball on the target viewed.

Moderate divination; CL 10th; Craft Wondrous Item, scrying (plus any additional spells put into item); Weight 7 lb.