a scintillating ring with a light blue 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 a topaz.

It is a scintillating ring with a light blue gem.
It weighs a couple of ounces.

You identify a scintillating ring with a light blue gem.
It is an anti-summoning object. It is efficient against long range spells.
It weighs two ounces, and it is worth about eighteen gold, seven silver, and fifty copper.
Its keywords are ring, scintillating, lightblue-ring, light, and blue.