Necklace with real Black Agate (or Black Onyx) stone on beautiful silver chain / can be used as a pendulum.
The chain is in silver, adjustable from 50 to 55cm long (19 12/16" to 21 5/8"), so you can wear it in two different ways.
Gold-filled is a more resistant material than gold-plated, and 5% of the weight of the jewelry must be composed of gold (50 to 100 more important than gold-plated jewelry).