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$45.00
Current Bid
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Closed
21/03/2021 08:52 pm
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200.00 CTS ANDAMOOKA ROUGH SLAB PARCEL-IDEAL FOR EARRINGS [BY9002]

SKU
Dimensions (mm)
40.000 x 25.000 x 7.000mm
Weight (cts)
200.000
Type
Rough
Colours

ANDAMOOKA MATRIX ROUGH SLAB
[SAME TREATMENT APPLIES TO FAIRY OPAL]

This is a natural  andamooka matrix rough slab.We have  treated only once to show the colour bars. This piece is ideal for cutting earrings as the colour bar is in stripes and you can cut a few sets out and re treat for stunning earrings.  There is a lot of wastage in the bulk rough we buy so we only pre shape for you.
You can reshaped it or cut into smaller stones but you will have to retreat it.
Mined in Andamooka South Australia
TREATMENT FOR ANDAMOOKA MATRIX WITH SUGAR ONLY.
MATERIALS
250 grams glucose,white castor sugar,pot or pressure cooker,plastic tweezers.
STEPS
-Preshape the material

- Thoroughly dry the material in oven sun or hairdryer. You can also soak in acetone for 10 minutes to dry the stones out.
- 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 DO NOT 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 500 F 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.
In the learning section of opal actions there is details on how to treat with acid and sugar but this sugar only gets good results on porous materiel
This material is very solid
-

POLISHING
 The surface is usually porous porous so its hard to get a good finish but this should give good results and you may be able to polish as is..
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.



The weight and size is app

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Express Shipping is discounted to $12.00 on orders with 2 or more items
Rest of the world
Express Shipping is discounted to $39.00 on orders with 2 or more items
Registered Shipping $9.00 / 7 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

seda rough opals
seda rough opals
Welcome to Seda Rough Opals, your gateway to the captivating world of opals. Founded by Paul Sedawie, whose lifelong love affair with opals began at the tender age of 14, we are passionate about bringing you the finest rough opals straight from the source. With over 30 years of experience in the opal industry, Paul and his sons have cultivated relationships with miners worldwide to ensure that every opal in our collection is of the highest quality. From Lightning Ridge to international gem shows, our opals are hand-selected with care and expertise. Whether you're a seasoned opal enthusiast or a novice collector, Seda Rough Opals offers a diverse range of rough stones to suit every taste and budget. Each opal is a natural work of art, waiting to be transformed into a stunning piece of jewelry or cherished as a unique addition to your collection. Join us on a journey of discovery as you explore the raw beauty of opals at Seda Rough Opals. Let us share with you the wonder and excitement of uncovering these precious gemstones, straight from the earth to your hands. Welcome to Seda Rough Opals, where the adventure begins.
Lightning Ridge, Australia
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Bids History (1)
glenngems
Purchased from this seller previously
3 years ago
$44.00

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Shipping Details

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

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Overview

Listing Type : Standard
Product ID : 905443
Estimated RRP : $175.00
Starting Bid : $44
Starts : 20th March 2021 03:04 pm AEST
Ends : 22nd March 2021 01:52 pm AEST
* All prices are in USD