![thumbnail of 1790s Opaline Glass Brooch (on white background)](http://eriebasin.com/cdn/shop/products/geoopaline03191_medium.jpg?v=1561671019)
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![thumbnail of 1790s Opaline Glass Brooch (backside)](http://eriebasin.com/cdn/shop/products/geoopaline03194_medium.jpg?v=1561671019)
![1790s Opaline Glass Brooch (on white background)](http://eriebasin.com/cdn/shop/products/geoopaline03191_1024x1024.jpg?v=1561671019)
![1790s Opaline Glass Brooch (side view)](http://eriebasin.com/cdn/shop/products/geoopaline03192_1024x1024.jpg?v=1561671019)
![1790s Opaline Glass Brooch (detail)](http://eriebasin.com/cdn/shop/products/geoopaline03193_1024x1024.jpg?v=1561671019)
![1790s Opaline Glass Brooch (backside)](http://eriebasin.com/cdn/shop/products/geoopaline03194_1024x1024.jpg?v=1561671019)
Vintage
1790s Opaline Glass Brooch
![1790s Opaline Glass Brooch (on white background)](http://eriebasin.com/cdn/shop/products/geoopaline03191_1024x1024.jpg?v=1561671019)
![1790s Opaline Glass Brooch (side view)](http://eriebasin.com/cdn/shop/products/geoopaline03192_1024x1024.jpg?v=1561671019)
![1790s Opaline Glass Brooch (detail)](http://eriebasin.com/cdn/shop/products/geoopaline03193_1024x1024.jpg?v=1561671019)
![1790s Opaline Glass Brooch (backside)](http://eriebasin.com/cdn/shop/products/geoopaline03194_1024x1024.jpg?v=1561671019)
Sold
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An unusual and strikingly modern c1790 Georgian brooch with a large rectangular opaline glass crystal in between old mine cut white paste. The foil backings are in good condition with each of the side stones having a black dot at its center to emulate the diamond cutting style of the time.