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6.95 carat Lightning Ridge semi black rectangle opal


Good solid all round Lightning Ridge semi black opal with a scattering of red multicolour fire. Flat face


  • Mine - Lightning Ridge
  • Body Tone - N6
  • Brightness - 3.5/4
  • Fire colour - Red multi
  • Size - 15x13x4.3mm
  • Weight - 6.95 carats


Price is per stone


About Opals


Treatment: Natural

Color: Black, White, Blue, Green, Red, Yellow, Pink, Grey, Purple, Orange, Brown

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 dimentions given




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 safty on the water.


All orders are sent recorded delivery UK and International. 


6.95 carat Lightning Ridge semi black rectangle opal

SKU: Opl021
£335.00 Regular Price
£301.50Sale Price
Only 1 left in stock
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