Rajgarh pits, Ajmer District, Rajasthan, India
One of the most important emerald deposits. Pegmatite bodies are generally lenticular and concordant with the schistosity, lengths of 20 to 60 m and thicknesses of 2 to 10 m. Grayish-white beryl seldom occurs in pegmatites. Large aggregate of biotite or phlogopite, which are partially replaced by chlorite may be enriched with schorl and unevenly distributed clusters of emerald crystals.Ref: E. Kievlenko (2003) Geology of gems, p. 86