Wolkem India Ltd. Offers Dolomite with Specific Gravity- 2.3-2.9. Wolkem India Ltd. Is an ISO 14001:2004 accredited company. Wolkem India Ltd. Convert the calcite, wollastonite, talc, dolomite and kaolin mined rocks into specialized grades based on varying purity, brightness, colour, particle sizes, particle shape and surface-treatments. Dolomite with Specific Gravity- 2.3-2.9 is available in size ranging from 100 mesh to d97=10 micron with brightness ranging from 85% to 96% and with Mgo contents ranging from 19% to 22%.