How To Split Boulder Opal

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Boulder Opal is found in the state of Queensland, Australia and is the second most precious type of opal after black opal. The process of mining the rock and then turning it into a polished stone is explained here, how to Split Boulder Opal.

Boulder Opal is formed in Ironstone and in veins of colour bars. This Ironstone can be sandy in composition to deep consolidated dark brown ironstone. Boulder Opal can be found around Yowah, Australia and is more deep brown in colour compared to the sandy ironstone around Winton to Quilpie in Queensland.

This rough boulder opal is also formed in rocks and pancake shaped rocks that need to be split open so that they can be cut and polished into stones. Most opal miners crack open a rock to expose any colour so that they can ask a greater price for the rock. It’s worth noting that not all rocks have colour. It takes a lot of work to mine the rock in the first place and then sometimes miners can crack open a rock with a hammer and find no colour. It can sometimes be a game of luck for the miners. Once colour is found the miner will ‘slab’ the opal bearing rock.

How to Split Boulder Opal

Make sure you wear safety glasses while chipping and sawing Rough Opal at all times.
After slabbing the rock the best method when you get to a color bar is to take to thin saw blade and place small cut along the colour bar.
Most times this will crack open and the next morning it will show a clean split.
If the rock does not split take a hammer and a screw drive or a blunt edge and hit along the saw cut and the rock will split open exposing the colour bar.

SHOP FOR BOULDER OPAL

Boulder Opal

Boulder Opal nalazi se u državi Queensland u Australiji i drugi je najdragocjeniji tip opala nakon crnog opala. Ovdje je objašnjen proces iskopavanja stijene, a zatim pretvaranja u polirani kamen, kako Split Boulder Opal.

Boulder Opal nastaje u željeznom kamenu i žilama u bojama. Ovaj željezni kamen može biti pješčan u sastavu do duboko konsolidiranog tamnosmeđeg željeznog kamena. Boulder Opal može se naći oko Yowah, Australije i dublje je smeđe boje u usporedbi s pješčanim željezom oko Wintona do Quilpiea u Queenslandu.

Ovaj grubi opal kamenja također se formira u stijenama i stijenama u obliku palačinke koje je potrebno rastaviti tako da se mogu rezati i polirati u kamenje. Većina rudara s opala otvori kamen kako bi razotkrila bilo koju boju kako bi mogli tražiti veću cijenu za kamen. Važno je napomenuti da sve stijene nemaju boju. Potrebno je puno rada da bi se stijena premjestila, a onda ponekad rudari mogu otvoriti kamen čekićem i ne pronaći boju. To ponekad može biti igra sreće za rudare. Nakon što se nađe boja, rudar će 'zasjeniti' stijenu opalnog ležaja.

Kako Split Boulder Opal

Uvijek pazite da nosite zaštitne naočale dok krpate i pilite grubo opal .
Nakon slabljenja stijene najbolja metoda kada dođete do šipke u boji je odvesti na tanku oštricu pile i staviti mali rez uz traku boje.
U većini slučajeva to će se otvoriti i sljedećeg će jutra pokazati čistu podjelu.
Ako se stijena ne razdvoji, uzmite čekić i pogon vijaka ili tupi rub i udarite uzduž pile, a stijena će se otvoriti otkrivajući traku boje.