Loose Gemstones

Grey Opal Oval 2.5 ct

Grey Opal Oval 2.5 ct

Be the first to review this product


In stock


Australian Opal with N6 body tone and pinfire pattern in green and blue, with traces of yellow and orange. This opal holds its pattern very well, it appears virtually unchanged, no matter the direction of light or the viewer. Medium dome oval cut makes this gem perfect for any jewellery setting.
Stock Unit No. GB/RZ/LAO/1059
Gemstone Opal Australian
Gem Colour Multicoloured
Shape Oval
Weight 2.5 ct
Dimensions 13.18x8.23x3.63 mm
Clarity VS
Country of Origin Australia
Enhancements None
Shipped From United Kingdom



Opal is a composition of silica and certain amount of water, usually up to 10%. Its internal structure was a mystery until the invention of electron microscope, which revealed a lattice like pattern of silica spheres arranged in more or less orderly fashion. That is the case for precious opal which dazzles us with its play of colour, which in turn is created when light gets scattered and waves interfere with each other. There are many varieties of opal with main sources being Australia, Mexico, Brazil and recently Ethiopia. Opal has amorphous structure and its hardness varies between 5 and 6.5 on a Moh's Scale. While wearing opal you should generally avoid, hard knocks, abrasion, immersion in liquids other than water ( household chemicals, oils etc.). To clean your opal it's best to use wet cloth or gently clean it under running water, you should avoid ultrasonic cleaners. Australian Boulder Opal becomes more and more popular as other opal sources continue to diminish. It can show patterns and colours as strong as the top black opals because the rock matrix gives it a dark background for its fire to shine up against. It is composed of thin opal veins that were originally, empty cracks in Ironstone or other type of rock, where the water could intrude and fill it with silica that over time settled to create a gem known as Australian Boulder Opal.


  1. Be the first to review this product

Write your review

Write Your Own Review

You're reviewing: Grey Opal Oval 2.5 ct

How do you rate this product? *

  1 star 2 stars 3 stars 4 stars 5 stars


Pictures- All Images used by us represent the actual item on sale unless stated otherwise. We try to depict each jewel and gem as accurately as possible and do not use colour altering techniques during post processing stage. Please note that our images usually show objects in high magnification as to enable you to inspect them in close detail, the actual measurements are given in products' description and you should reflect on them while considering the purchase. Pictures showing gems are many times their size and may show you more imperfections (inclusions, imperfections of cut and polish) than you will see while holding the same gem in your hand. Certain gems like opals do not look the same under different lighting conditions or from all directions and in such case we chose the best shots to show potential of the stone. Purchasing- Once you are ready to complete your purchase, click on the "Checkout" button. This will open a new tab where you will be asked to provide your details and ultimately a PayPal® Payment window in your browser will open and you will be given instructions for completing the transaction. PayPal® will accept payment from either your PayPal® account or your credit or debit card (you do not need to have a Paypal account). All transactions conducted this way are extremely secure and ensure that no-one has access to your credit card information. Once you have completed the process, you will receive a confirmation email to indicate that we have received your order. This does not indicate that a contract exists between us. We have included this term to protect us in the case that we are no longer able to supply a particular product for some reason. You will receive another email once we have accepted your order. If you would prefer to pay by another method such as bank transfer or personal cheque please contact us to arrange this. Shipping- For security reasons we will only use insured types of shipment. Please be aware that if you order from abroad you may be liable for paying appropriate duties and taxes.

You can check some of the related products below (click left/right arrows to see more of them):

Related Products