a twinkling ring with an indigo gem

The ring is round and perfectly shaped to fit around a finger. Only a small marking can be found on the inside of the ring, a signature of the silversmith that forged it. The top of the ring features a square, silver setting with room for a gem. The ring has been embedded with an amethyst.

It is a twinkling ring with an indigo gem.
It weighs a couple of ounces.

You identify a twinkling ring with an indigo gem.
It is an anti-summoning object. It is efficient against long range spells.
It weighs two ounces, and it is worth about ten lauren, two celeb, and fifty busc.
Its keywords are ring, twinkling, indigo-ring, and indigo.