Pronunciation: [kˈalsɪdənɪ] (IPA) 
Calcedony is a mineral that is often used in jewelry making. It is spelled with a "c" instead of a "s" because it is derived from the Greek word "khalkedon" which was also spelled with a "c". The correct pronunciation of calcedony is /kælˈsɛdəni/ (kal-SED-uh-nee). The stress is on the second syllable, and the "a" sound is pronounced like the "a" in "cat".
Calcedony, also spelled chalcedony, is a mineral belonging to the quartz group. It is characterized by its fine-grained and compact nature, with a smooth and waxy surface. This term is derived from the Latin word "calcedonius," referring to a blue variety of this mineral found near the river Calcedon in Turkey.
Calcedony typically occurs in a range of colors, including white, gray, brown, blue, and green, but can also exhibit various patterns and banding. It is composed predominantly of silicon dioxide and is renowned for its striking translucency, allowing light to pass through the stone and create a delicate glow. This gemstone is commonly used in jewelry making, serving as a popular choice for cabochons and beads due to its desirable appearance and versatility.
In addition to its aesthetic qualities, calcedony has long been revered for its metaphysical properties and healing benefits. It is believed to enhance mental coherence, foster emotional balance, and promote harmony and calmness. It is thought to be a stone of communication and self-expression, encouraging feelings of peace and relieving anxiety. Calcedony is also associated with the throat chakra, stimulating effective communication and facilitating honest dialogue.
Overall, calcedony is a precious gemstone prized for its beautiful colors, unique patterns, and numerous positive attributes. Its rich historical background, combined with its beauty and individual properties, make it a highly sought-after gemstone in the world of jewelry and crystal enthusiasts.
A mineral of the quartz family, closely allied to the opal and agate-also written chalcedony.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "calcedony" comes from the Latin word "calcedonius", which itself was derived from the Greek word "khalkedon", originating from the ancient town of Chalcedon (now Kadıköy, Turkey), located on the coast of the Sea of Marmara. Chalcedon was famous for its abundant deposits of various types of chalcedony, a form of cryptocrystalline quartz. Over time, the spelling evolved into "calcedony" in English.
