Do you feel like to find the purity of the siddha gems(nava mani) and get them certified by the authorised Govt.Agency?
Pl contact
Director-peterology
geological institute of india
1st floor A wing,raj bhavan
besent nagar
chennai-6000090
ph. 04424911093, 04422343966 .Thanks to dr.Ganeshan.Geo.Ins.India.Chennai.
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