Kowallabe Quartzite Slab - Wavy Herringbone Pattern - Australian Rare Lapidary Central but some types that are

but some types that are heavier with irons may need to be treated to polish due to pits

high-gloss polish

and I have never been let down while cutting up batches of these

We and our customers have had pretty good luck with our Gamble Bone though

The distinct pattern is formed by crystallites of cristobalite embedded in the obsidian as it cools

Kowallabe Quartzite Slab - Wavy Herringbone Pattern - Australian Rare Lapidary Central but some types that areKowallabe Quartzite Slab Wavy Herringbone Pattern Australian Rare Here's a beautiful slab of Kowallabe Quartzite from Australia featuring wavy feathery patterns with herringbone like structures creating distinctive V patterns. This rare material is nice and solid with bright coloration in red, gold, black, and light blue. The detailed patterns should take a fantastic polish for exceptional cabochons. SPECIFICATIONS Material: Natural Kowallabe