top of page

8.50 carat Dead Horse Gully Long Oval opal

 

So rare to find Dead Horse Gully mine Opal today, so much so we only have a couple of opals left from this famous named area.

Stunning thick bar of green blue fire on top of semi black crystal medium tone base.  

 

  • Mine - Dead Horse Gully
  • Body Tone - Crystal Semi Black
  • Brightness - 4.5
  • Fire colour - Green and Blue
  • Size - 29x8x5mm
  • Weight - 8.50 carats

 

About Opals
 

Luster: Pearly, Vitreous, Opalescence

Birthstone zodiac sign: Libra

Associated month: October

Crystal system: Amorphous solid

Chemical formula: SiO₂·nH₂O

Hardness (Mohs hardness scale): 5.5 – 6.5

Country of origin: Australia, Ethiopia, Mexico and Cornwall amazingly 

Size variations: can vary 0.3mm each way on all dimension given
 

Properties:

 

In mystical circles, opal is considered a stone representing hope, innocence and purity. It has strong connotations of happiness, faithfulness, loyalty and confidence.  Regarded as a powerful sea stone for safety on the water.

 

All orders are sent recorded delivery UK and International. 

8.50 carat Dead Horse Gully Long Oval opal - OPl024

SKU: Opl024
£887.00 Regular Price
£620.90Sale Price
Quantity
Only 1 left in stock
  •  UK - 2-3 days £6.95

    International - 7-14 days £18.99

©2026 by Cornwall Gem - United Kingdom, Cornwall, Helston. All rights reserved

bottom of page