Anglers who come to Kodiak Island for halibut and salmon often stumble onto a second kind of treasure hunt without even planning for it: garnets scattered along the shoreline and tucked into the hills above Larsen Bay. Kodiak Island garnets are common enough that rockhounds build entire side trips around finding them, but knowing where to look and what you’re actually looking at makes the difference between a frustrating walk and a pocket full of real finds. Here’s what we tell our guests before they head out.
Why Kodiak Island Has Garnets at All
Garnets form in metamorphic rock, and Kodiak Island has plenty of it. The schist and slate that make up much of the island’s bedrock went through enough heat and pressure over millions of years to grow garnet crystals right inside the rock itself. Between fishing trips, plenty of our guests wander the shoreline near the lodge or take a hike up into the hills above Larsen Bay, and the first question they usually ask is some version of why the rocks here look the way they do. We cover that in more depth in an earlier piece on the geology of Kodiak Island’s rocks and minerals, which is worth a read if you want the full picture before you start hunting.
Where Garnets Are Found on Kodiak Island
Garnets on Kodiak Island don’t sit in one neat location. They show up wherever the schist has been exposed and broken down, which means a few different kinds of terrain are worth checking.
Beaches and Stream Gravel
Wave action and stream flow do a lot of the work for you. As schist erodes, the garnets inside it get freed up and settle into gravel beds along beaches and creek mouths. Dark, gravelly stretches of shoreline near Larsen Bay are a reasonable place to start, especially after a storm has stirred up fresh material.
Hillsides and Trail Exposures
Inland, garnets turn up in exposed rock cuts and loose scree on hillsides where schist is close to the surface. Several of the routes covered in our guide to hiking trails near Larsen Bay pass through this kind of terrain, which is part of why we often suggest pairing a hike with a bit of casual rockhounding on the same outing.
What Kodiak Island Garnets Actually Look Like
Knowing what to look for matters more than most people expect, since a lot of ordinary dark rock gets mistaken for garnet by first timers. A few things to watch for:
- Color: typically a dark red to brownish red, sometimes almost black in low light
- Shape: rounded, many sided crystal faces rather than sharp angular edges
- Size: usually small, often no bigger than a pea, though larger specimens do turn up
- Setting: frequently still embedded in a piece of host rock rather than loose and polished
A garnet that’s been tumbling in surf for a while may look duller and more rounded than one freshly broken out of a hillside, so don’t expect every find to look like a gemstone right out of the ground.
Garnets Compared to Kodiak Island’s Other Minerals
Garnets aren’t the only thing rockhounds come to Kodiak Island hoping to find. Some visitors are also curious about jade, which has a very different look and a different origin story on the island, and we’ve laid out the details in a separate guide on whether jade is actually found on Kodiak Island. Knowing the difference up front saves you from second guessing every greenish or reddish rock you pick up.
Tips for a Successful Garnet Hunt
A little preparation goes a long way when you’re searching rocky, uneven ground on an island with unpredictable weather.
- Wear sturdy, waterproof footwear with real tread, since beach gravel and hillside scree both get slick
- Check tide tables before heading to shoreline spots so you’re not caught out by incoming water
- Bring a small bag or container, since garnet hunting usually means picking up a lot of ordinary rock before finding something worth keeping
- Stick to public land and established trails unless you have explicit permission to be elsewhere
If you want a broader sense of what else is worth searching for on the island, our overview of where to search for rockhounding finds on Kodiak Island covers more ground beyond just garnets.
Build a Garnet Hunt Into Your Kodiak Trip
Garnet hunting fits naturally around a fishing charter, since the same rocky shoreline and hillside terrain that produces garnets is also where our guided hiking and kayaking excursions spend their time. If you’re planning a trip built around halibut, salmon, lingcod, rockfish, or Pacific cod charters and want to work in some time on foot or on the water between trips, get in touch with us and we’ll help you put together a schedule that leaves room for it.