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$14.00
當前出價
4
出價
關閉
27/09/2020 06:16 pm
4
414
11

80.78 CTS FAIRY OPAL ROUGH PARCEL FROM QLD AUSTRALIA4 [F8839]

存貨單位
尺寸(毫米)
40.000 x 13.000 x 6.000mm
重量 (cts)
80.780
Treatment
Heat Treatment
類型
Rough, Specimen
顏色

IMPORTANT NOTE: This item contains fissure filled cavities that may contain glass, cobalt, or other materials. Due to the presence of these materials, this item should be referred to as a composite stone. FAIRY OPAL ROUGH  PARCEL
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 sugar with no acid being used.
This is a parcel that 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.
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 is the whole parcel and size is the largest
It is similar in appearance to Honduran opal.

運輸商 運送至:國家 運送到世界其他地區
FedEx $12.00 / :幾天天 $39.00 / :幾天天
:國家
FedEx 對包含 2 或更多商品的訂單折扣為 $12.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $39.00
Registered Shipping $9.00 / :幾天天 $16.00 / :幾天天
:國家
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $9.00
世界其他地區
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $16.00

quality rough
quality rough
The owner Paul Sedawie is the current president of the Opal Association.All my life i have enjoyed collecting minerals and fossils .I have been opal mining and now have a large opalized fossil collection of museum quality.I enjoy visiting mines in different parts of the world and try to buy direct off the miner or as close to the source as possible to give you the best deals.Natural stones/minerals fascinate me so I don�t stock laboratory made stones.I have a few sites here which I head under the Seda group.I believe that your continued business is my business so I hope you enjoy the amazing array and beauty of nature I have to offer.Best Regards Paul Sedawie We have a retail shop/museum at the Gold Coast Opal and Gem Centre 25 surfers av mermaid waters Qld Australia .4218 open mon to sat 10 to 5
:城市,國家
已驗證
:總反饋

  • tr3y003
    tr3y003
    積極的

    A+ seller great looking piece

  • kylea
    kylea
    積極的

    Paid and shipped - no feedback left after 100 days

  • chris47
    chris47
    積極的

    The stone is very beautiful. Im really looking forward to cut it. Its always a pleasure to make business with you

  • chris47
    chris47
    積極的

    The stone is very beautiful. Its always a pleasure to make business with you

  • chris47
    chris47
    積極的

    The stones are very beautiful. Im really looking forward to cut them. Its always a pleasure to make business with you

投標歷史 (4)
hbatchelor
之前從該賣家購買過
3 years ago
$13.00
3 years ago
自動出價
$12.00
3 years ago
$2.00
3 years ago
$1.00

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審計

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送貨細節

船運:
$16.00 :通過 Registered Shipping 計算天數
發貨自:
Australia

付款方式

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該賣家在 Australia 的交易中添加 10.00% 稅。

概述

列表類型 : Standard
產品編號 : 1274935
起拍價 : $1
開始 : 31st August 2020 11:16 am AEST
結束 : 28th September 2020 11:16 am AEST
* 所有價格均以:貨幣為單位