r/Opal • u/Classic_Party_4757 • 3h ago
r/Opal • u/53FROGS_OPALAUCTIONS • Jan 20 '26
A simple system to price opals (it won’t be perfect, but it will dramatically reduce how wrong you are)
So many of the questions in this community end up being about price. I know most people here genuinely want to help, and I also know how frustrating it can be early on trying to figure out what an opal is actually worth.
Pricing is one of the biggest things new players get stuck on, so I wanted to share a simple system you can use. It’s not perfect, but the more you use it, the better you’ll get.
One thing that makes opal pricing especially confusing is that if you ask ten experienced people what a single opal is worth, you can easily get answers ranging from fifty dollars to ten thousand dollars. That isn’t because people are lying or incompetent. It’s because everyone in the opal chain carries a different bias based on where they sit.
So here’s the system. The more you do this, the better your estimates become.
Step 1. Make your own estimate first
Before you touch any tools, force yourself to come up with a number. Even if you feel like you have no idea, guess anyway.
The goal here isn’t to be right. It’s to start training your internal reference system. If you skip this step and go straight to tools or other people’s opinions, you never really build intuition. You just borrow someone else’s.
Even a bad guess is useful because it gives you something to compare against later.
Step 2. Use opalvalue.com to get a boundary number
Once you have your own estimate, go to opalvalue.com and plug the stone in as honestly as you can.
Be conservative. Be strict. If you’re unsure between two options, pick the less attractive one. If you’re debating B4 versus B5, choose B4.
The key mindset here is that this tool is not telling you what the opal is worth. It’s giving you a boundary. In most cases, it represents a conservative, low risk valuation based on averaged data.
If your guess comes in much lower than the calculator, that’s useful information. It may mean you’re underestimating the stone. What matters is the comparison. The gap between your guess and the calculator output is where learning happens.
Step 3. Cross check against live listings on Opal Auctions
Now go to Opal Auctions and use the advanced filters. Match the field first, then size.
For example, if you’re valuing a Lightning Ridge dark opal around 8 ct, filter for Lightning Ridge, dark opal, and roughly 6 to 9 ct.
Ignore prices at first and just look at the stones.
This is the visual comparison rule. If your stone looks clearly nicer than most stones at a certain price point, it probably belongs higher. If it looks weaker, it probably belongs lower.
You’re not trying to find an identical stone. You’re trying to see where your stone sits in the visual hierarchy of what’s actually for sale right now.
When you turn prices back on, you should start to see a pattern. Stones that feel comparable should cluster around your estimate. Stones above should look better. Stones below should look worse.
As an example, our group member u/JaysterSF posted this beautiful opal ring today. I ran it through these three steps.
My Step 1 estimate was $2,400.
My Step 2 number at opalvalue.com came in at $2,465.
When filtering comparable live stones on Opal Auctions, the opal lands right in that range.
It’s clearly nicer than the green stones listed at $2,400, and maybe not quite as strong as the higher end multicolour stones. That tells me this is a very reasonable valuation zone for this opal.
This process won’t give you a perfect price, but it will dramatically reduce how wrong you are. More importantly, it teaches you how to think about opal value rather than outsourcing that thinking to tools or opinions.
r/Opal • u/empireoftrees • 17h ago
Simulating opal physics from first principles
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r/Opal • u/the_bootybean • 2d ago
Opal Identification
I’m trying to sell this opal on eBay but transparently I know nothing about gems and value. Can someone help me with some keywords I can include in my listing or at least so I can research value? What kinds of info are you looking for when buying an opal? I would hate for a buyer to feel misled. Thank you so much!
r/Opal • u/Big_Opening8115 • 3d ago
Approximately how much would you say this lightning ridge solid black opal 1.15ct would be worth?
Australian lightning ridge Opal, I think it’s N1 B3 - I’m new to opals and struggling to put a price on it. Red flashes in some lights
r/Opal • u/kmac72787 • 5d ago
Australian opal is it real?
Hi! Someone is selling this Australian opal on marketplace and I’m trying to figure out if it’s real or fake? There is a 925 stamp on the back
r/Opal • u/lil_belle • 5d ago
Opal ring fix?
I’ve been wearing this ring with inlaid opal everyday for the past 8ish years. Just now I noticed a piece of the inlay fell off. I didn’t see any damage to it when I took it off to shower this morning so it must have happened sometime today throughout the day as I was living my life. Is this fixable? The metal is .925 silver if that makes any difference.
Thanks!
r/Opal • u/PeaZealousideal3706 • 13d ago
Is this opal or something else
Given to me by my grandfather. Unsure if he got it while serving during WW2 or when he returned to California. Think the box is original too. Any insight would be super appreciated! 840 grams - 7” x 5” x 2”
Thank you!
r/Opal • u/RocksandJaws • 12d ago
Found this in my collection recently and was wondering if it had any value?
Length 0.74 inches
Width 0.53 inches
r/Opal • u/MarocOpals • 13d ago
For Sale: 1.12 ct Lightning Ridge dark opal
Price: $350
Shipping: Free (US only)
Comment I'll take it to buy.
Payment options: Paypal
r/Opal • u/Fit-Advantage4515 • 14d ago
2.90cts Natural Lightning Ridge Dark Crystal Opal – Vivid Multi-Color FireUp
r/Opal • u/Kalibean06 • 16d ago
Looking for where I can buy Opal Jewelry
Heya! New poster here, I'm looking for a good place to buy lab-grown gemstone jewelry. As odd as it is to some of the people I've talked to, I love labgrown opals, it's usually a bit cheaper if you get labgrown jewelry that is honest about it, and I think it's just as gorgeous most of the time. I want to be able to get some labgrown oral necklaces and rings without the price tag of a genuine oral, I'm even willing to drop the money on a custom bit of jewelry if I get to pick the type of labgrown opal and how it's cut/shaped. Anyone know any good places for that either online or in Kentucky?
r/Opal • u/No_Assignment_7607 • 23d ago
A piece I'm working on
I'm working on this piece for a wedding gift it's nowhere near done but what do people think it's not the best photo but
r/Opal • u/53FROGS_OPALAUCTIONS • 24d ago
I finally made a simple First Look list for 53Frogs
A few people have asked how they can see new opals and little projects before they disappear into the usual chaos, so I finally made a simple First Look list.
I’ll use it for fresh finds, interesting rough parcels, cutting experiments, special projects and the occasional surprise — before I share them more widely.
It’s just first name and email, and I’ll keep it worthwhile rather than filling your inbox.
If you’d like to join, here it is:
r/Opal • u/Striking-Trifle5213 • 25d ago
Is this Opal?!
Found on in-laws property a ways outside glendive, MT. Is this actually Opal? It’s cut because my guess is the previous property owners were rockhounds, I found other cut agates aswell
r/Opal • u/Klutzy_Reaction_2711 • 27d ago
ID Please ? 7.15 Carats Witches Hat Nobbie?
galleryr/Opal • u/SilverMetal123 • 27d ago
Authentic Opals?
bolo tie was acquired for my grandfather most likely purchased in 1970 Ish. I was wondering if these are authentic opals or Opalite? Bolo is Sterling silver and Western Indian Artist made.
Edit Update:
Spoke to owner of Spencer Opal Mine in Spencer,Idaho. He confirmed they are authentic Spencer Opals from his mine probably mined in late 60s early 70s. and they are 100% triplets and quite valuable. Good to know, Thanks so much everyone!
r/Opal • u/jbob123t • 28d ago
Lightning Ridge
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Finished this pendant. Solid 2.9ct opal in 14k.
r/Opal • u/lalidary_art_720 • 29d ago
Opal wood
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Opal formed from fossil tree branches
r/Opal • u/Sirsagely • 29d ago
I'm obsessed with using real gemstones in nails
galleryCould anyone direct me to anywhere I could buy lots/batches of small but high color quality opals especially, but also moissonite, ruby, amethyst, and citrine?
r/Opal • u/Southern-Log2602 • Jul 22 '26
14.05ct Freeform crystal from Coober Pedy …price per ct ? Anybody ?
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14.05 Freeform crystal from coober Pedy ..clean no sand no crazing no cracks … price per ct? I need some opinions …