Sapphire FossickingMany visitors to our region are experienced fossickers who know what they are looking for. However, we often get enquiries from people who are looking for some guidance on the basics. Note that for our overseas visitors, fossicking = rockhounding. The exact definition of the term is subject to argument, but in our experience, Aussies use the word fossicking to describe the search for gemstones & rockhounding is used when looking for fossils, mineral specimens, etc.
There is great variation in wash type - you may be digging in heavy black clay or sandy soils. When digging for sapphire bearing gravel (or "wash"), the presence of black spinel (often called "black jack") or of common corundum in the concentrate is a good indicator that sapphire is also present. Sapphire may be found in a wide range of colours including blue, green, yellow and gold, and combinations known as "parti-colours" so don't just look for the blue ones. Place your sieves one on top of the other and fill your top (coarse) sieve with gravel, submerge below water and shake in a circular motion. A slight up and down movement will help to suspend the gravel in the water and release the smaller and finer stones.
Take the screen to a clean, flat area for inspection (many use a hessian bag) and flip the screen over landing it squarely upside-down. If centred correctly, the gemstones will be in the centre and on top. A keen fossicker is looking for treasure in the next photo.
Fossicking in the New England area will yield a wonderful range of gems. While most are looking for sapphire, other possible finds include zircon, black spinel, garnet, varieties of quartz, topaz and tourmaline. Zircon is associated with sapphire in most areas and range in colour from clear, yellow, honey brown to rich red and orange hues. Black spinel is another gem commonly found with sapphire and is an opaque black mineral with excellent properties as a cut gem.
No licence is required to fossick for gems in NSW - other states may differ. You simply need consent from the landholder and must follow some simple rules. See here for more information from the relevant government authorities:
Fossicking is fun for the whole family - give it a try ! |
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