D20:Crystal Ball Wondrous Item

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.

Crystal Ball Type	Market Price
Crystal ball	42,000 gp
Crystal ball with see invisibility	50,000 gp
Crystal ball with detect thoughts (Will DC 13 negates)	51,000 gp
Crystal ball with telepathy*	70,000 gp
Crystal ball with true seeing	80,000 gp
* The viewer is able to send and receive silent mental messages with the person appearing in the crystal ball. Once per day the character may attempt to implant a suggestion (as the spell, Will DC 14 negates) as well.

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

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System Reference Document -> Magic Items: Wondrous Items