Almandine Gemstone -A Review

Review Article
Nazia Sultana and Sankara Pitchaiah Podila
DOI: 
http://dx.doi.org/10.24327/ijrsr.2018.0910.2812
Subject: 
science
KeyWords: 
Almandine gemstone, poor woman’s gemstone, jewellery, physical, optical, chemical properties
Abstract: 

Almandine garnet is ferrous iron end member of garnet group minerals. It is useful in making jewellery, sand blasting, glass polishing and as good abrasive. In addition, to the common physical and optical properties, some of the almandine garnets possess asterism, color zoning and alexandrite like effect. Its occurrence has reported from few countries only-India, Brazil, Canada, European Countries (Italy, Greece, Romania, Close to Paris, Yugoslavia), Hungary, Iran, S. Africa, Sri Lanka, UAE and USA. Chemical analysis has taken from literature and major oxides variations observed. From this, it is concluded that high concentration of SiO2 present in Kothagudem (India) and Mozambique (S. Africa), Al2O3 in Mozambique and FeO in Chhattisgarh (India) and Garibpet samples. Island of Chios (Greece) and Val Codera (Italy) samples show high concentrations of MnO and MgO from Mozambique and S. Madagascar (S. Africa). CaO is high in Asakapalli area of Andhra Pradesh, India. As Almandine garnet is useful in many ways exploration for new deposits shall be carried out.