a gleaming stone

The stone is formed like a round cabochon, which hints that it might be a lost stone from a piece of jewellery. It has a soft glow which makes it easily noticeable and distinguishable from other stones of value.

It is a gleaming stone.
It weighs a couple of ounces.

You identify a gleaming stone.
It weighs two ounces, and it is worth about seven gold and ten silver.
Its keywords are stone, jewel, gem, and gleaming.