Black Matrix Opal Specimen 258.90 Carat
Winton OpalGemstone Type: Winton Black Matrix Fairy Opal
Totel Carat Weight : 258.90 Carat (51.78 grams)
Colour : Rainbow, Both Side
Shape : Free
Item Length: 54.70mm
Item Width : 52.54mm
Item Depth: 11024mm
Gemstone Treatment: Heated
Brand: Xellent
Gemstone Form: Polished
Cut Grade: Very Good
Wholesale: Yes
Country/Region of Manufacture: Australia
Country of Origin: Australia
The Opal Specimen's surface is a stunning display of Red, blue, green and hints of yellow glittering Opal Colours.
A beautiful looking natural pattern makes this specimen quite unique.
The Sandstone Opal Matrix was mined in Western Queensland near the town of Winton.
In certain areas of Queensland, Opal formed inside Sandstone. To enhance the Opal colours, the Sandstone containing Opal, is cooked in cooking oil, resulting in the sandstone turning grey or black in colour. Cooking the Sandstone Opal Matrix in this way will make the Opal colours more vibrant and make any patterns formed by the Opal layers more visible