Adularia is a mineral belonging to the feldspar group. Its name comes from the Adula mountains in Switzerland where it was first discovered. The word is pronounced /ædjuːˈlɛərɪə/ (ad-yoo-LAIR-ee-uh) in IPA phonetic transcription. The first syllable is pronounced with the short vowel sound /æ/ followed by the consonant blend /dj/. The second syllable is pronounced with a long vowel sound /u:/ followed by the consonant sound /l/. The final syllable is pronounced with the short vowel sound /ə/ followed by the consonant sound /r/ and a schwa sound /ə/.
Adularia is a mineral and a variety of potassium feldspar commonly referred to as moonstone. It is named after the Adula Mountains in Switzerland where it was first discovered. Adularia is a translucent to transparent mineral with a pearly or opalescent luster, typically exhibiting a milky-white to colorless appearance.
This mineral belongs to the triclinic crystal system and has a hardness of 6 on the Mohs scale, making it relatively durable. It forms prismatic or tabular crystals and can be found in a range of sizes, from small grains to large, well-formed crystals.
Adularia is best known for its optical phenomenon called adularescence, which is a captivating play of light caused by the reflection of light from thin, alternating layers within the mineral. This effect gives the stone its gentle shimmer and makes it highly prized for jewelry-making.
In terms of its geological occurrence, adularia is commonly found in metamorphic rocks, such as granites, gneisses, and schists. It often occurs in conjunction with other minerals like quartz, muscovite, and albite.
Due to its attractive appearance and mystical properties attributed to it, adularia has been valued as a gemstone for centuries. It is associated with feminine energy and often considered a symbol of intuition, balance, and inner strength. Adularia is also believed to have healing properties, promoting emotional stability and a deep connection with the divine.
A transparent variety of potash felspar.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "Adularia" is derived from the name of a locality called Adula in the Swiss Alps. Adula is a mountain range located in the canton of Graubünden in southeastern Switzerland. The mineral known as Adularia was first discovered in this region. Adularia is a type of feldspar, specifically a variety of orthoclase, which is a common rock-forming mineral. The term "Adularia" was coined in reference to this mineral being found in the Adula mountains.