The Lake Superior Agate is Minnesota’s state gemstone, and for good reason. These banded stones are gorgeous when polished, made into jewelry, or even straight from the beach. With constant waves on Lake Superior, there is never a shortage of new rocks to search through. Agates make a wonderful souvenir of the North Shore.
You can find – or at least search for – agates at a number of different beaches. Head down to the water — some people like to wade in, but be warned, Lake Superior is never particularly warm. Agates are easier to identify when wet, good thing you’re looking next to the largest body of fresh-water in the world!
The best time to look for agates is after a storm or an exceptionally windy and wavy day on the lake. The waves will push new rocks from the lake up onto the beach. If you really want to get into the agate hunt, bring some tools: a gardener’s hand rake/cultivator and a magnifying glass will make searching and identifying your prize easier.
Part of Kitchi-Gami park; Brighton Beach is is perfect for skipping stones, agate-hunting, ship-watching, wading, picnicking and lollygagging. Features summer-use restrooms, picnic tables and grills. Brighton Beach Road starts just past the little blue tourist info center and connects in 0.8 miles to Scenic 61/Congdon Blvd.
Note North Shore beaches are pebble or cobblestone; for sand, head to Park Point In Duluth.
Flood Bay State Wayside offers a nice long pebble beach. Amble, search for agates, wade, picnic, relax. The walkway to the beach goes through a wetland that is sometimes home to waterfowl, otters, and beavers. Offers a seasonal restroom.
Drive right up to this expansive beach, Iona’s Beach Scientific & Natural Area, which is bookended by cliffs, rhyolite, and bedrock to the north and basalt to the south. Nor’easters work away at the northern cliff, breaking off shards of the pink rhyolite and wash them down shore. Once home to Twin Points Resort, the area is named after longtime owner Iona Lind.
Scientific and Natural Areas [SNAs] are natural resources that are rare or of exceptional scientific and educational value.
Stop by the new trailhead, check out the maps and make the short walk to admire views of the Beaver Falls, Beaver River, river mouth and bay. The river drops 300 feet in a series of cascades and falls above the Highway 61 bridge, then enters the sedate bay.
Amazing river gorges that start a few feet inland from the highway, waterfalls, two foot-bridges, hiking, a cobblestone river mouth, camping and hiking. Hike a short way upriver to the amazing gorges, then return south of the highway and walk across the foot-bridge. During spring runoff or after rainy days, the river spray will mist you. Back in the day, this was the only river without a [sand] bar at the mouth, hence the name, Temperance.
Heading northeast, just past Thomsonite Beach, Highway 61 curves left, revealing picturesque Good Harbor Bay, Seagull Rock, and, in the distance, Grand Marais. Use the pull of to admire the view and take photos. A quarter mile farther is Cut Face Creek Wayside, a nice spot for a picnic, an agate search, and skipping stones.
Artist’s Point is the island and tombolo, spit of land, that makes up the east side of the harbor including the east breakwall and lighthouse; a drop of wilderness in the lake. So inspiring! Find picnic tables along the East Bay’s cobblestone beaches.
Relax, skip stones, and picnic on the beach. The there-and-back hike follows the Kadunce River with spurs to overlooks and pools. During the warm months of summer, when the water runs low, many locals hike up the river including climbing the waterfall.
A nice stretch of cobblestone beach close to Highway 61 and just farther enough from Grand Marais to be less visited. Admire the view, search for agates, have a picnic; mo amenities so pack out what you take in.
Founded in 1962, Agate City Rocks & Gifts has remained the largest rock shop on Lake Superior's shores for decades, offering more Lake Superior agates for sale and on display than any other shop in the country. Don't miss Agate City, Lake Superior's premier rock shop!
Family owned rock shop since 1946! Specializing in Lake Superior Agate, Thomsonite, Isle Royale Greenstone, lapiday equipment and rock-related items. We sell custom made jewelry, beads, carvings, fossils, and great gifts for collectors. Plus our free museum!
Most Lake Superior agates started to form around 1.1 billion years ago by sulfur and carbon dioxide bubbles in the lava that formed the landscape. These bubbles slowly filled in with layers of other minerals that form the agates we see today. Each band in agate is from a different mineral, and most agates are 99% Microcrystalline Quartz. When you see the orange, rust, brick-red bands, you are seeing rusty iron.
Agates are much harder than the rocks they are formed in, so as the softer basalt and rhyolite erode around them, they come free and wash up on our beaches. The largest-ever Lake Superior agate was over 110 pounds, the size of a small adult.
If you want a pretty, shiny agate, drop them into water. Another common practice is to put agates through a rock tumbler to polish and round them. Some people cut them with a rock saw or break them open to reveals the bands within them, too.