Silver And Black Onyx Rings

black onyx
Almost unknown in nature, it is produced by warming chalcedony in a sugar solution for several days or weeks. The stone in then placed in warm sulphuric acid. The acid reacts with the sugar, precipitating the free carbon. The color is permanent.
Incorrect name for black single colored agate or chalcedony which is usually colored artificially.  Correct term will be black chalcedony.  See onyx.   Most material called "black onyx" sold in the market are reconstructed material.  See reconstructed stones.
Black onyx is a mysterious and beautiful gemstone that has been treasured and worn since ancient times. See onyx jewelry on Amazon

silver
made from or largely consisting of silver; "silver bracelets"
coat with a layer of silver or a silver amalgam; "silver the necklace"
a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography
(esp. of the moon) Give a silvery appearance to
Coat or plate with silver
Provide (mirror glass) with a backing of a silver-colored material in order to make it reflective

rings
(ring) a characteristic sound; "it has the ring of sincerity"
Each of a series of resonant or vibrating sounds signaling an incoming telephone call
A telephone call
An act of causing a bell to sound, or the resonant sound caused by this
gymnastic apparatus consisting of a pair of heavy metal circles (usually covered with leather) suspended by ropes; used for gymnastic exercises; "the rings require a strong upper body"
(ring) sound loudly and sonorously; "the bells rang"