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      $48.00 USD
      Price

      298 CTS FAIRY OPAL ROUGH SLAB [BZ1019]

      1758
      1

      SKU
      Dimensions (mm)
      68.000 x 63.000 x 13.000mm
      Weight (cts)
      298.000
      Type
      Rough
      Colours

      FAIRY OPAL ROUGH  SLAB 
      It is precious opal embedded in the natural sandstone and mined in Queensland Australia.Only by carbonizing it does it become like black opal..The treatment is usually oil and  or sugar with no acid being used and has been treated to show the fire so you can make as specimens or re shape and or cut into smaller stones.If so you will have to re treat
      .NOTE This material had a band of sandstone thats not as porous as the rest of the stone so it hasnt treated. You would need a vacuum to fully treated it but i think it looks interesting as it is.
      TREATMENTS
      --On the opal field the normal treatment is to wrap the stones in aluminum foil with a some sugar and olive oil and throw into the hot coals for 15 minutes.I have tried this with varying success.
      - You can heat the stones in a oven to 100 degress F [38C] for a hour to dry them out
      Place gently in a  bowl with syrup of sugar. Heat for 8 hours but not to boiling  as you will loose the water so the sugar seeps in to the stone-i once left for  over a week and had good results.
      Wrap in aluminum foil and heat to 400 for 4 hours-you can check earlier. This is best done on a out door bbq,kiln or oven.
      -You can treated like Andamooka matrix with acid-details are in the learning section on the site.

      TREATMENT FOR FAIRY OPAL AND ANDAMOOKA MATRIX WITH SUGAR ONLY.


      MATERIALS
      250 grams glucose,white castor sugar,pot or pressure cooker,plastic tweezers.
      STEPS
      -Pre shape the material

      - Thoroughly dry the material in oven sun or hairdryer.
      - Put water in pot on low temperature and add glucose and castor sugar. DO NOT BOIL.
      -Place warmed stones into warm solution and cover the stone with liquid.
      -leave on low temperature for 24 hours but DONT BOIL.
      -Remove with tweezers and let cool.Use a paper town to wipe away access.
      The next steep is to carbonize the sugar in the stone. Place the stones on a metal or pyrex dish and place in a kiln at 600 degrees for one hour.This will burn or carbonize the sugar in the stone.
      _When the stones have cooled clean on a grinding wheel.
      Remember to take all precautions with gloves and mask and clothing with good ventilation.
      This is a natural product so results may vary a bit due to how porous the sandstone is. Some material will have to be treated a few times to get good results. You can also experiment with various temperatures as i like to cook with lower temperatures.
      Remember to have fun!
      WE HAVE TAKEN THE PHOTO WITH THE ROUGH WET.
      -

      POLISHING
      This parcel The surface is porous so its hard to get a good finish.
      You can polish as a natural stone or coat it with resin to get a better finish. 
      We suggest a polymer resin as its stable.inert and nontoxic and dosent yellow..Check out our listings of fairy opal polished in sedaopals.Some of there were polished in china under vacume with a amazing finish.
      We have also used mono-compontent thermo set resin,cynoacrylates and 2 parts resin but these can turn yellow over time.  ive even heard of nail polished used and hardened under uv lights.
      We have taken the photo with the stone wet.
      The weight and size is app
      It is similar in appearance to Honduran opal.

      Shipping provider Shipping to Australia Shipping to rest of world
      FedEx $12.00 / 5 days $39.00 / 10 days
      Australia
      FedEx is discounted to $12.00 on orders with 2 or more items
      Rest of the world
      FedEx is discounted to $39.00 on orders with 2 or more items
      Registered Shipping $9.00 / 10 days $16.00 / 21 days
      Australia
      Registered Shipping is discounted to $9.00 on orders with 2 or more items
      Rest of the world
      Registered Shipping is discounted to $16.00 on orders with 2 or more items

      sedaopals
      sedaopals
      Discover the magic of opals at SedaOpals, where every stone tells a unique story. Paul Sedawie, the heart and soul of SedaOpals, began his journey with a humble piece of boulder rough at 14, sparking a lifelong passion for these mesmerizing gemstones. With over 40 years in the opal industry, Paul’s dedication has taken him from the rugged landscapes of Lightning Ridge to prestigious gem shows around the world. Paul, a former president of the Opal Association and an author of several opal books, shares his vast knowledge and passion with enthusiasts globally. He’s even made the largest donation of opalized fossils and curiosities to the Australian Opal Centre at Lightning Ridge. At SedaOpals, Paul and his sons offer a meticulously curated collection of opals, each handpicked for its exceptional beauty and character. Whether you’re a seasoned collector or new to the world of opals, you’ll find a stunning array of black opals, boulder opals, and crystal opals to explore. Join us in celebrating the timeless beauty and craftsmanship of opals. Welcome to SedaOpals, where every opal is a piece of art.
      Mermaid Beach, Australia
      Verified
      44960 Feedback

      • alexd6
        alexd6
        Positive

        Very nice piece at a nice price

      • alexd6
        alexd6
        Positive

        Good communication, fast delivery, and beautiful stones

      • alexd6
        alexd6
        Positive

        Beautiful stones delivered quickly Thank you

      • thegampa
        thegampa
        Positive

        My first triplet. Looking forward to getting it.

      5%
      Coupon code SEDADEALS
      Valid Until
      4th Mar 2025

      Audit

      The Opal Sheriff program allows our members to request an audit on any product, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

      Shipping Details

      Shipping:
      $16.00 21 days via Registered Shipping
      Ships from:
      Australia

      Payment Options

      • paypal
      • stripe
      • gempay
      This seller adds 10.00% tax to transactions in Australia.

      Overview

      Listing Type : Standard
      Product ID : 1152410
      Starts : 13th February 2025 04:52 pm PST
      * All prices are in USD