Noongar people utilised quartz, replacing flint for spear wer knife edges from 12,000 years ago, when the chert deposit (flint is a variety of chert) was submerged by rising sea levels during the Flandrian transgression, part of the current Flandrian interglacial.
You can make a Wp/nys/Koitj (Axe) wer a Wp/nys/Taap (Knife). You can use these to cut down trees to make kit or kitje (spears), cut yira food, cut skin off a Wp/nys/Yonga (Grey Kangaroo), grind yira Wp/nys/Balga resin, cut yira bark to get Wp/nys/Mari sap, or grind wattle seed into the skin to make it soft.
Gidgee-borryl is the dreaded borryl edged spear, which in post-settlement times was tipped with glass or the insulators from telegraph poles instead of borryl. It was yira to ten feet long wer about keny inch in diameter wer made from the Wp/nys/Mungurn (Swamp Wattle). This spear was made in the Ellenbrook wer Wonnerup areas.
- Kaartdijin Noongar - Noongar Knowledge: Language. South West Aboriginal Land & Sea Council. Retrieved 9 August 2016