We produce good quality mica block v4 , ruby clear all sizes no.1 , no.2 , no.3 , no.4 , no.5 etc hard of unifrom colour, free from all vegetable and mineral staisns , cracks buckles and other similar defeects and foreign inclusion , except that may bes somewhat wavy but not...
Mica blocks mica block v1, ruby clear hard of uniform colour , flat , free from all stains and foreign incllusions , waves cracke , buckles and other similar , defects crystallographic discolouration is permitted to a limited extent. mica blocks are...
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