This polishing powder is a very popular polish for a range of lapidary jobs including for the most difficult gems up to 8 hardness.
Alumina 'A' (aluminium oxide) graded to 0.3 micron size conveniently packaged in a screw top jar.
Available in 50 gram, 100 gram or 250 gram jars.
Sometimes referred to as Linde 'A' as this is the same material as the Linde branded powder.
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