This 21.80 carat yellow agate is a large stone for its family, though agate keeps the rate per carat low. Here is what is worth knowing, with a few things to check on arrival.

• Weight: 21.8 carats.
• Hardness: 6.5 to 7 on the Mohs scale, tough enough for a broad ring or pendant.
• Colour: may be dye-assisted, as is common in yellow agate; ask us what we know about stone AG-YE-0019.
• On arrival: hold it in daylight and look for even colour and a smooth, unchipped edge, then compare it with the photographs.

Because you inspect it before paying, you are not taking the stone on trust. If you like it, good; if not, the seven-day return window applies. Independent lab testing is your choice.

The stone has enough surface for a broad silver bezel or a pendant mount, and the full yellow agate range is a click away. Before you choose, read our yellow agate guide.

Cash on Delivery across Pakistan: Karachi usually 1–2 working days, other cities 2–4.

This particular stone

This listing is one natural yellow agate with a weight of 21.8 Carat. Its price is Rs. 3,290 — roughly Rs. 151 for each carat. Treatment: treatment not tested. Quote reference AG-YE-0019 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.

Above twelve carats you are into collector territory. Pieces this heavy are usually set as pendants or kept loose, and they are prized for the size of rough they came from. If you do set it, choose a bezel or a heavy claw to protect the edges.

On the Mohs scale yellow agate rates 6.5 to 7. That is middle-of-the-road hardness: comfortable in pendants and earrings, and in rings worn with some care. Store it apart from harder stones so it does not pick up scratches, and wipe it with a damp cloth rather than scrubbing.

Whoever you buy yellow agate 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 yellow agate 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): Yellow agate is often dyed. 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.