Put it on last. That is one of the simplest habits for anyone who owns opal: dress, spray your perfume and hairspray, and only then add the opal. This 4.10 carat Australian fire opal will thank you for it.

Opal's reputation for being delicate is partly deserved, so this listing is mostly about living with it. The stone measures 5.5 to 6.5 on the Mohs scale. In a pendant that is rarely a problem; in a ring, scratches are likely over time unless you are careful.

It is a natural fire opal from Australia, reference AG-000732. Australian opal tends to sit at the upper end of our opal prices, and this stone is no exception, so ask for a short video and see what you are paying for.

Clean it with lukewarm water and a soft cloth only. Avoid ultrasonic cleaners, steam and heat, because opal holds water in its structure and dislikes sudden change. When you store it, wrap it separately from harder stones.

Treatment is the last thing to ask about. Solid opal is usually left as mined, though smoke or sugar treatment exists and doublets and triplets are traded. We sell solid natural opal; message us for what we know about this piece. Independent lab testing is your choice.

More options are in the opal collection, and our gemstone buying guide covers the basics.

It travels Cash on Delivery: Karachi usually in 1–2 working days, other cities in 2–4, and 7 days to return.

This particular stone

This listing is one natural australian opal with a weight of 4.1 Carat. Its price is Rs. 18,750 — roughly Rs. 4,573 for each carat. Origin: Australia. Treatment: treatment not tested. Quote reference AG-000732 when you message us about it. The photographs show this exact stone, so what arrives at your door is the piece you chose on screen.

Between two and six carats is the range most people choose for a gents' ring or a noticeable pendant. Here colour drives the price more than size does, which is why two stones of near-identical weight can be priced very differently.

Whoever you buy australian opal from, make sure of three things: the stone is natural rather than lab-grown, glass or glass-filled; any treatment is stated in writing; and the weight quoted is the weight of the finished stone. We check every australian opal for those three points before it is listed, and because you pay on delivery you can look at the stone — or have it tested — before any money changes hands.

We sell natural stones only and inspect each one before it is listed. Treatment for this stone: Treatment not tested. No lab report yet; independent testing welcome. As general background (not a statement about this stone): Solid opal is usually untreated; some opal is smoke- or sugar-treated, and doublets/triplets exist — we sell solid natural opal. Ask us on WhatsApp and we will tell you what we know about this exact stone; independent lab testing is available on request.

A certificate of authenticity is available on request for this stone, and independent laboratory testing can be arranged. Because you pay on delivery, you can also take the stone to a lab of your choice within the 7-day return window. Read more on our authenticity page.