A Kingdom Hearts silver ring, previously a Japan-exclusive product, is now available for pre-order at the North American Square Enix Store for $199.99.
The products description states:
This elegant sterling silver ring features a motif inspired by KINGDOM HEARTS.
NOTE: Ring Sizes are Japanese, US size shown is approximate. This ring is Japanese size 11, which is approximately US size 6.
You can view pictures of the ring below.