Handmade 9k or 18k gold necklace in a 40×4 mm rectangular piece. and back plate in sterling silver with semicircular pieces of onyx and malachite measuring 25×12 mm. Golden sterling silver chain.

The onyx It is a variety of black agate, composed of silica, of volcanic origin. Its name comes from the Latin onyx  which means "nail". According to Greek legend, Eros cut Aphrodite's divine nails and scattered them on the sand so that their power would last, turning them into stone. The ancient Greeks called onyx all varieties of agate, from the lightest to the darkest. Later, the almost black variety was called onyx.
In Greek and Roman antiquity, this stone was used to make cameos in which goldsmiths carved the figures of famous people on pieces of onyx.
Throughout history, it has also been used to decorate seals, a type of ring worn by authorities to certify official transactions.
The largest producer of onyx is Mexico.

The malachite It is a mineral that presents a composition of circular and oval patterns with different greenish tones. Its color is due to the presence of copper subjected to oxidation. It is a mineral found in nature in small crystals or stalactites. The word derives from the Greek malache, which refers to the green leaf of the “mallow”.