Emerald Lingam idols consecrated daily except on annual Thiruvathirai star day. The reason for covering the idol with sand paste is that the idol has fragile properties and may not bear sound and light waves. The sandal paste removed from the idol is distributed to the devotees. Siruvapuri Balasubramania Swamy Temple is located on the north western side of Chennai city and is lying 33 km from Chennai. The visitor needs to take diversion from Chennai Kalkotta National Highway. The except the idols of Lord Balasubramaiya Swamy, Aadhimoolar and Navagrahams, all the other idols are carved out of emerald stone. The beautiful
Emerald on the market since 1964. Gilson's emeralds are usually grown on natural colorless beryl seeds, which are coated on both sides. Growth occurs at the rate of 1 mm per month, a typical seven-month growth run produces emerald crystals 7 mm thick. Hydrothermal synthetic emeralds have been attributed to IG Farben, Nacken, Tairus, and others, but the first satisfactory commercial product was that of Johann Lechleitner of Innsbruck, Austria, which appeared on the market in the 1960s. These stones were initially sold under the names "Emerita" and "Symeralds", and they were grown as a thin layer of emerald on top