What to expect at a mineral show
Give a show 3 hours minimum and spend the first one buying nothing. The walk-through costs nothing, and it is the stage everyone skips and later regrets.
Give a mineral show 3 hours minimum and spend the first hour walking the whole floor without buying anything. A show has no index: the only way to know what is there is to look at all of it. Take a 10x hand lens and a small torch, because hall lighting hides bruising on crystal terminations, and boxes to carry thumbnail and cabinet specimens home in.
In short
- The first pass is reconnaissance and you buy nothing during it. Prices, quality and locality coverage only make sense relative to the rest of the room, and the room is not sorted. An hour spent looking is the cheapest hour of the day.
- The stage that takes longest is the second pass, when you go back to four or five tables and actually look at specimens under a lens. Budget more time for it than feels reasonable — this is where shows overrun and people leave having bought badly in a rush.
- Take a hand lens and a torch. Hall lighting is diffuse and overhead, which is exactly the light that hides bruising and fills. A small torch used at a low angle, and then straight on, is the two-frame test done by hand.
- The good material is often not on the table. Dealers bring boxes under the cloth for the people who ask. Asking is free, and the question that opens it is a specific one about locality rather than a general one about what else there is.
- Ask the locality question first and the damage question second. Both before any discussion of price, because both change what the specimen is, and one of them is much harder to raise after you have started negotiating.
| Kind of show | Typical scale | What it is good for | Wrong for |
|---|---|---|---|
| Local club show | A hall, a dozen to thirty tables | Meeting the local society, British locality material, cheap thumbnails, asking questions without pressure | Anyone hunting rare species or world-class display pieces |
| Regional or national show | Hundreds of tables, one to three days | Serious range, specialist dealers in one field, seeing a lot of material in one place | A first visit with no idea what you collect — the volume is disorienting |
| Major European show | Very large, several days, international dealers | Rarities, fine display material, the dealers you only ever email | Casual buying. The pace and the prices both assume you know what you want |
| Tucson, in February | A whole city, many separate venues over weeks | Everything, including wholesale and the trade side of the business | A short trip. It cannot be done in a day and planning it is a project |
| Dealer open days and field meets | A handful of people | Locality-specific material and genuinely knowledgeable conversation | Browsing. You go for a reason or not at all |
The timeline, and the stage that always overruns
Hour one — the full circuit, buying nothing. Walk every aisle. Do not stop to look closely. You are building a map: who has British material, who has Tsumeb, who has micromounts, who is a gem and jewellery seller you can skip, and roughly where the price levels sit. A show has no index and no search. This is the index, and you have to build it yourself.
Hour two — the second pass, and this is the one that overruns. Return to four or five tables. Now look properly: hand lens, torch, turn the specimen over, ask about the locality. This stage takes as long as it takes, and the commonest failure at shows is compressing it because the day is running out. If you have to choose, cut the number of tables, not the time per specimen.
Hour three — decisions, and the dealers you did not get to. Go back and buy. Then, if there is time, walk the aisles you wrote off in hour one, because the map you built was made at walking pace and will have missed things.
What makes it slip: arriving at opening with the crowd, which makes hour one slower and hour two impossible; talking to people, which is genuinely one of the reasons to go and eats an hour without announcing itself; and buying in hour one, which converts the reconnaissance pass into a shopping pass and destroys the whole structure.
Three hours is a minimum for a club or regional show. A major European show is a day per hall at minimum and you should assume two days. Dates move year to year, so check the organiser directly — Munich, Sainte-Marie-aux-Mines and Tucson all publish their own.
What to take, in the order you will want it
A 10x hand lens. The single most useful object you can carry and the one thing that changes what you are able to see. If you own nothing else, own this.
A small torch. Exhibition hall lighting is diffuse, overhead and flattering, which means it hides exactly what you need to see. Hold the torch low and to one side and the crystal faces flare; hold it near your eye line and the bruises, fills and glue lines appear. That is the two-frame test from our page on photographing specimens honestly, done by hand in four seconds. Ask before shining a torch on someone's stock; nobody minds, and asking marks you as somebody who knows what they are doing.
Cash, in useful denominations. Card readers fail in halls with bad signal, and cash is still how a lot of this trade works.
Boxes and packing. Not a bag. Specimens bought at a show travel home in whatever you brought, and a rigid box with tissue is the difference between a collection and a repair job. Our page on packing specimens covers why the gap has to compress.
A notebook, and a list of what you are looking for. Write the list before you go. It is the only defence against the real risk at a show, which is not being cheated but buying eleven things you half want instead of one thing you actually want.
And a UV lamp only if you have asked. Some dealers welcome it, some have a dark box for the purpose, and waving a shortwave lamp around a crowded hall without eye protection for the people nearby is not acceptable. See choosing a UV lamp.
The two questions to ask, and the order they go in
First: where is it from, exactly? Not the country. The mine, the level, the pocket if it is known. A dealer who can answer in that detail is telling you the material has provenance behind it; a dealer who says the country and changes the subject is telling you something too. Neither answer is disqualifying and both are information. Our page on specimens without a locality covers what the answer is worth.
Second: what is wrong with it? Asked exactly like that, neutrally, as a normal question — because it is one. Every old specimen has something. Repairs are normal and disclosed repairs are not a defect in the transaction. The answer to this question tells you far more about the dealer than about the specimen, and it is much harder to ask after you have started discussing price, which is why it goes second and not fourth.
Then, and only then, price. We do not publish prices or market rates on this site and will not start here. What is worth saying structurally is that both previous questions change what the object is, so asking them afterwards means you were negotiating over something you had not yet identified.
The question that opens the boxes under the table is a specific one. Not have you got anything else, which invites a no. Something like: do you ever get Caldbeck Fells material — I'm after linarite and the copper secondaries. A dealer who has it will go and look, and a dealer who does not will often tell you who does. That is the mechanism by which shows are actually useful, and it is also the mechanism a wanted list runs on: the material surfaces through people who know you are looking, not through browsing.
What not to do, and when a show is the wrong place to buy
Do not buy in the first hour. Stated again because it is the rule everyone breaks and the one that costs the most.
Do not buy tired. The last forty minutes of a show is when the bad purchases happen — a combination of fatigue, the sense that the day should produce something, and dealers packing up. If you have found nothing, going home with nothing is a perfectly good outcome.
Do not let a crowd make the decision. Three people waiting behind you at a table is not a reason to decide faster. Put the specimen down, say you will come back, and come back.
And there is material a show is genuinely the wrong place to buy. Anything where fluorescence is the point, because you cannot test it properly in a lit hall. Anything where you need to weigh it, measure the density, or look at it under a microscope. Anything soluble or humidity-sensitive — chalcanthite, the uranium micas — which has just spent a day in a hall at unknown humidity and has a car journey ahead of it. And anything expensive enough that you would want to think for a week, because a show's structure is designed to prevent exactly that.
The countervailing point, honestly. A show is the only place you will see a hundred specimens of one species side by side, and that comparison is genuinely hard to get any other way. It is worth going for the education even in a year when you buy nothing, and the conversations are how most people find the dealers they end up buying from for the next twenty years.