Bay of Fundy Stones: A Field Guide to the bay's Tidal Treasures
Every stone has already lived an extraordinary life before it reaches my workbench.
Nowhere is that more obvious to me than along the shores of the Bay of Fundy.
The Bay is famous for its tides, of course—but if you're a rockhound, beachcomber or the sort of person who can't walk across a gravel beach without stopping every four feet to pick something up, those tides are only part of the magic.
They are constantly moving, tumbling, exposing and redistributing stone.
And what stones!
Agate. Jasper. Quartz. Amethyst. Green stones that demand a second look. Conglomerates containing whole miniature landscapes. Dark stones streaked with iron. Bits of old glass polished soft by salt water and time.
Some are obvious.
Some come home with me because I simply need to know what happens when they're wet, polished or tumbled.
And some remain mysteries.
That's part of the fun.
So, Why Do They Call Us Rockhounds?
The name suits us rather well.
The word rockhound has been kicking around for more than a century, and it's built from exactly what it sounds like:
rock + hound.
A hound searches.
So do we.
We scan gravel bars. We turn stones over. We crouch down because something flashed in the corner of our eye. We walk twenty feet, decide that maybe we shouldn't have put that last rock back, and walk twenty feet back again.
We bring home pockets that are significantly heavier than when we left.
And occasionally, apparently, we lick things.
I couldn't begin to tell you how many rocks I've licked in my lifetime.
Far too many to count.
There actually is some geology behind the infamous "lick test." Porous materials can sometimes behave differently against the tongue, and the trick has occasionally been used as one clue in identifying things such as fossil bone.
My version tends to be considerably less scientific.
Sometimes you just want to know what that dusty little stone is going to look like wet.
Water brings colour, banding and pattern to life remarkably well, and when you're standing on a beach without a lapidary studio tucked into your back pocket, improvisation happens.
I am not specifically recommending that you lick rocks.
I'm just saying that if you have...you may already be one of us. Welcome to the pack!
First Things First: What Is a “Bay of Fundy Stone”?
Here's an important distinction.
“Bay of Fundy stone” isn't the name of a particular mineral or rock.
When I use the term, I'm talking about provenance: a stone that comes from the Bay of Fundy region or its shoreline.
And that shoreline contains an astonishing variety of geology.
Different parts of the Fundy coast expose very different rock histories—from ancient sandstone and granite to basalt formed during enormous geological events hundreds of millions of years ago.
Those varied environments helped create and expose an equally varied collection of minerals and rocks, including quartz-family minerals, agate, jasper, amethyst and many other treasures.
In other words:
The Bay isn't one geological story. It's a whole library.
Every stretch of shoreline turns a different page.
Agate & Chalcedony
Agate is one of those stones that can turn an ordinary beach walk into a full-blown pocket-filling obsession very quickly.
It belongs to the quartz family and is a form of chalcedony.
What usually gets my attention is its translucency, waxy-looking surface, banding or little areas that seem to glow when wet.
Bay of Fundy agates can vary enormously in colour and pattern. Some are soft grey or white. Others carry honey, rust, red or brown tones. Some have delicate parallel bands; others look as though tiny landscapes have been trapped inside them.
Polished Bay of Fundy agates and chalcedony-rich finds. Banding, translucency and little internal landscapes become much easier to see after polishing. A little piece of beach glass has also snuck into the glamour shot!
What I look for:
- Bands, swirls or repeating patterns
- A slightly waxy appearance
- Edges that allow some light through
- Little windows of translucency
- Grey, white, honey, rust, red or darker colour zones
- A surface that becomes dramatically more interesting when wet
One of my favourite beach tricks is ridiculously simple:
Get it wet.
Some stones practically introduce themselves once water hits them. Others just sit there looking like wet rocks.
They don't all get invited home.
Jasper: Earth's Abstract Art
Jasper is one of my great Fundy weaknesses.
Unlike translucent agate, jasper is generally opaque, and its colours can run through reds, ochres, browns, creams, greens and almost-black tones.
And then there are the patterns.
Stripes. Spots. Rivers. Clouds. Brecciated fragments. Strange little landscapes.
Six polished Bay of Fundy jaspers and not one of them tells quite the same story. Reds, stripes, mottling and earthy patterns are all part of the attraction.
This is also where naming gets interesting.
Rockhound names, lapidary names and strict geological classifications don't always line up neatly.
Two people can look at the same beach stone and argue cheerfully for twenty minutes about whether we're looking at jasper, agate, chalcedony or some combination thereof.
I try to identify my stones as accurately as I can—but if I don't know, I would rather say “likely” than invent certainty.
The stone has been around longer than I have.
It can survive without my label.
Quartz: Clear, Cloudy, Rusty & Full of Surprises
Quartz turns up in countless personalities. Some pieces are nearly clear. Some are milky. Some carry fractures that flash little rainbows. Others have inclusions, iron staining or rusty-red colouring from their environment. And then there is amethyst—purple quartz—which has made some areas around the Bay particularly famous among mineral collectors.
Quartz is a perfect example of why I don't need a stone to be flawless. Give me inclusions. Give me fractures. Give me colour changes. Give me the weird little thing trapped inside that makes me reach for the loupe.
Perfect is easy to reproduce. Character isn't.
The Green Ones
Green stones can be particularly entertaining—and occasionally maddening—to identify.
I've worked with Bay of Fundy material identified as epidote, along with green jasper and green-and-red material commonly described as bloodstone.
But colour alone isn't enough to identify a stone.
Green material may contain different minerals, mixtures or inclusions, and beach wear can hide many of the clues you'd normally use for identification.
That means some stones don't get a confident name until I've cleaned them, examined them closely or put them through the tumbler.
Sometimes even then, the answer is:
Well. You're gorgeous, whatever you are.
And frankly, I can live with that.
Dark Stones & Black Agate
Black stones are another category where appearances can fool you.
A dark, rounded beach pebble may reveal banding, translucency at the edges, inclusions or unexpected patterning after cleaning and polishing.
Those details can help distinguish agate and other silica-rich material from the many other dark rocks the Bay can toss ashore.
Dark stones can hide almost everything until water, light or polishing reveals the clues beneath the surface.
I've used naturally dark Bay of Fundy material in my jewellery because I love the contrast between its quiet, almost mysterious surface and warm copper.
There's something beautifully elemental about it.
Sea. Stone. Metal.
Not much else required.
Conglomerate: A Stone Made of Stories
Conglomerate doesn't receive nearly enough jewellery-world glory.
Geologically, it's a sedimentary rock made from rounded pieces of older rock held together within another material.
In plain English? It's a rock full of rocks. And I adore it.
One small piece can contain several colours, textures and fragments—evidence that other rocks existed, broke apart, travelled, settled and eventually became something new together.
If ever there were a Mother of Metal stone, conglomerate makes a pretty good case for itself. Nothing wasted. Everything continued.
And Yes, Beach Glass Belongs Here Too
No, beach glass isn't a mineral.
No, it isn't technically a stone.
I'm including it anyway.
Because if this is a field guide to treasures shaped by the Bay, old glass deserves a seat at the table. A broken bottle or discarded piece of glass enters the water as rubbish. Years of movement dull its sharp edges and frost its surface. Eventually someone like me bends down and picks it up.
Then reclaimed copper gives it yet another life. Tell me that isn't Jewellery with a RE-purpose! The Bay apparently understands my business model.
Why Wet Stones Look So Different
If you've ever brought home an absolutely spectacular beach stone only to discover a dull grey lump in your pocket the next morning, congratulations.
You've been Fundied.
Water temporarily fills tiny surface scratches and changes the way light interacts with the stone, making colours look richer and patterns much easier to see. Polishing can recreate some of that effect more permanently.
That's one reason I tumble many of my collected stones before deciding whether they belong in jewellery. I'm not trying to erase where they came from. I'm trying to see what was already there. Some transform spectacularly. Some become beautifully smooth but remain quiet. Others reveal cracks or weaknesses that tell me they're better suited to my personal rock pile than someone's necklace.
That pile, incidentally, is not small.
From Beach to Tumbler to Talisman
Finding the stone is only the beginning.
A potential jewellery stone may be cleaned, sorted, studied and tumbled through several stages before I know what I have.
Then I look at shape. Balance. Pattern. Which side wants to face forward. Where the copper can hold it securely without covering the very thing that made me pick it up.
I don't cut every irregularity away or force every stone into a standard shape. That isn't what interests me.
My job isn't to make nature more obedient.
My job is to make the stone wearable without losing its story.
A Bay of Fundy stone becomes a Mother of Metal Mermaid Tail—held securely in copper without hiding the stone that inspired the design.
Sometimes that becomes a simple pendant.
Sometimes a stone immediately demands something more fanciful—like one of my copper Mermaid Tails, where a Bay of Fundy find becomes part stone, part sea creature and part talisman.
Nature creates. I just collaborate.
A Note About Identification
One thing I've learned from years of collecting stones is that beach identification can be wonderfully imperfect.
Colour is useful—but not definitive. So are hardness, translucency, fracture, lustre, pattern and geological context. Sometimes several of those clues are needed. Sometimes professional testing is the only way to be completely certain.
Some stones introduce themselves immediately. Others earn a place in my pocket simply because I want to know more.
My identifications are made to the best of my knowledge using the characteristics of the stone, its source and my experience working with it.
And I am always willing to learn.
Because a good rockhound should probably have at least two permanent conditions:
full pockets and unanswered questions.
A Word About Responsible Rockhounding
The Bay of Fundy is powerful, beautiful and deserving of respect. Before collecting anywhere, check the ownership and rules for that particular location.
Some beaches and protected areas do not allow the removal of rocks, fossils or other natural objects. National parks, including Fundy National Park, have regulations protecting their natural features.
And never underestimate the tide.
Know the tide schedule before heading out, keep track of your route back, and don't let one spectacular agate convince you that basic survival has suddenly become optional.
There will always be another rock.
Probably.
The Story Continues
I sometimes wonder how many times a Bay of Fundy stone has been moved before I find it.
- Broken from a larger formation.
- Weathered.
- Rolled.
- Buried.
- Exposed again.
- Moved by water.
- Picked up.
- Put down.
- Picked up again.
Then one day it lands in my hand.
That's the part of its story where I enter. Not at the beginning. And certainly not at the end.Just somewhere in the middle, with a spool of reclaimed copper and an idea.
The Bay does the first few million years of the work. I just happen to arrive somewhere in the middle with copper wire.
Every stone has already lived an extraordinary life before it reaches my workbench. My job isn't to change its story—it's simply to help it continue.
Explore More of the Bay
🌊 Explore the Bay of Fundy Collection here
Natural stones, sea glass and coastline-inspired pieces wrapped by hand in copper.
🧜♀️ Meet the Mermaid Tails here
One-of-a-kind Bay of Fundy stones transformed into wearable little pieces of Maritime mythology.