{"id":217,"date":"2023-07-14T00:00:14","date_gmt":"2023-07-14T07:00:14","guid":{"rendered":"https:\/\/houndingrocks.com\/?p=217"},"modified":"2023-07-14T00:00:14","modified_gmt":"2023-07-14T07:00:14","slug":"onyx-hunting","status":"publish","type":"post","link":"https:\/\/houndingrocks.com\/onyx-hunting\/","title":{"rendered":"Onyx Hunting: Identification, Characteristics, and Rock Hounding Tips"},"content":{"rendered":"

Welcome to the fascinating world of onyx hunting! Onyx, a stunningly beautiful stone, has been used for centuries in decorative and practical applications. With its striking patterns and deep, rich colors, it’s no wonder that onyx is a sought-after treasure for rock enthusiasts and collectors. In this article, we’ll explore the history and origin of onyx, its identification and physical properties, the various types of onyx, and its many uses. So, let’s dive in and uncover the secrets of this alluring stone!<\/p>\n

History & Origin of Onyx<\/h2>\n

Onyx has a long and storied history dating back to ancient civilizations. The name “onyx” comes from the Greek word “????,” meaning “claw” or “fingernail,” as ancient Greeks believed the stone resembled a human fingernail. Onyx was highly valued by the Romans, who used it to create intricate carvings and jewelry. Throughout history, onyx has been associated with various cultures and mythologies, often symbolizing protection, strength, and grounding energy.<\/p>\n

Onyx Identification & Physical Properties<\/h2>\n

Onyx is a variety of chalcedony, a microcrystalline form of quartz. It is characterized by its distinctive parallel bands of color and its fine, compact texture. The table below provides a summary of the key physical properties of onyx:<\/p>\n\n\n\n\n\n\n\n
Property<\/th>\nValue<\/th>\n<\/tr>\n
Chemical Formula<\/td>\nSiO2<\/sub><\/td>\n<\/tr>\n
Crystal System<\/td>\nTrigonal<\/td>\n<\/tr>\n
Cleavage<\/td>\nNone<\/td>\n<\/tr>\n
Fracture<\/td>\nConchoidal<\/td>\n<\/tr>\n
Specific Gravity<\/td>\n2.55 – 2.70<\/td>\n<\/tr>\n<\/table>\n

Onyx Colors<\/h3>\n

Onyx can be found in a range of colors, including black, white, red, brown, and green. The most common and sought-after variety is black onyx, which often features contrasting white bands. The colors of onyx are typically formed by impurities within the chalcedony, such as iron, manganese, and other trace elements.<\/p>\n

Onyx Hardness<\/h3>\n

Onyx has a hardness of 6.5 – 7 on the Mohs scale, making it a relatively hard and durable stone. It is resistant to scratches and can be polished to a high luster, making it an ideal choice for jewelry and decorative carvings.<\/p>\n

Onyx Types<\/h3>\n

There are several different types of onyx, each with its own unique colors and patterns. Some of the most popular types include:<\/p>\n

Black Onyx<\/h4>\n

Black onyx is the most well-known and highly valued type of onyx. It is characterized by its deep black color and contrasting white bands. This striking appearance makes it a popular choice for jewelry and decorative carvings.<\/p>\n

Sardonyx<\/h4>\n

Sardonyx is a variety of onyx that features reddish-brown and white bands. The name “sardonyx” comes from the combination of “sard,” a reddish-brown variety of chalcedony, and “onyx.” Sardonyx has been used for centuries to create intricate cameos and intaglios.<\/p>\n

Green Onyx<\/h4>\n

Green onyx is a less common type of onyx that features green and white bands. The green color is typically caused by the presence of trace amounts of chromium or nickel within the chalcedony. Green onyx has a unique, soothing appearance and is sometimes used in jewelry and decorative items.<\/p>\n

Onyx Uses<\/h2>\n

Onyx has a wide range of uses, both practical and decorative. Some of the most common uses for onyx include:<\/p>\n