Tag Archives: Michigan Greenstone

50 Shades of Isle Royale Greenstones

50 Little Isle Royale Greenstones awaiting new homes

Have you always wanted to own and wear something from Isle Royale? How great would it be if it was a Greenstone Pendant? Greenstone pendants made with Greenstones from Isle Royale are treasured for their beauty and rarity.

Small Isle Royale Greenstone Pendants

Several years ago I purchased a Greenstone collection that had been hidden in a garage in Lake Linden, Michigan for 50 years.

Over the years this stash has been my go-to trove for creating some of my best Isle Royale Greenstone Jewelry, although I already had some Isle Royale stones from other sources.

Our best sellers, by far, are small Greenstone pendants. While in Florida this last winter, my goal was to produce an entire tray of little Greenstone dazzlers. A “tray” consists of 50 Greenstone Pendants (each one fits in a 1 1/8″ X 3/4″ Acrylic container).

Isle Royale Greenstone Pendant
Isle Royale Greenstone with Feldspar in this one.

The smaller the Greenstone the more difficult it is to make a pendant, using conventional wire wrapping tools and techniques. I make many of my own tools to facilitate wrapping these small gemstones. The circumference of these stones are generally between an inch to an inch and a half. Good tools are one secret to producing good jewelry with precious metal wire. I purchase quality tools and adapt them, so I can create delicate pendants. Some of the handtools I create don’t work quite right, but after a couple decades of trial and error, I have invented just the right tools to make small pendants. Although the pendants appear simple, they are not easy to make.

A little Thomsonte inclusion adds to the excellent Chlorastrolite.

If I ever write a book on wire wrapping, I’ll show some adapted wire wrapping tools, but for now I keep some secrets. My best sellers are these small Greenstone Pendants, and I just don’t want the market to be flooded with Snob Appeal Knockoffs.

My small Greenstone pendants have some common traits. 1. They fit in 1-1/8″ X 3/4″ round acrylic gemstone jars. 2. They are made from my finest Greenstones from Isle Royale. 3. They are simply wrapped so as not to distract from the beautiful Greenstones 4. They have small bails that match the small stones (IF you put a larger bail on a tiny stone the proportions become incorrect). 5. The wire wrapping is fairly simple (again so as not to distract form the pattern of these little shiners. 6. Most are under $200! (not bad for a Greenstone actually from Isle Royale).

Each Greenstone has its’ own character, coloration, green shade, and pattern. Greenstones from Isle Royale are generally distinctive from greenstones from the mine dumps in the Keweenaw. Although I have found many mainland stones that you cannot tell from Island Stones, on the whole, and on the average, Island stones are more solid with better patterns.

I sell these little beauties on line, as well as at Copper World in Calumet, Miners North in Traverse City, and The Miners Den in Royal Oak.

Think you can’t afford a Greenstone? As an investment or heirloom, these small Isle Royal Greenstones top the list. They are made from delicate-looking 24 gauge double gold fill wire (Rose or Gold), Argentium Sterling (Tarnish resistant sterling silver), or a combination of the three precious metals. In any setting they make a graduation gift like no other, or a Mother’s Day gift that won’t be forgotten by next week!

These pendants are exceptional examples of Michigan’s official State gemstone, that can be worn with anything. Add a pair of Greenstones earrings, for a beautiful ensemble.

Shop our Michigan Greenstone pendants and earrings now!

Great Lakes Gemstone Pendant on Steroids

It isn’t often that a write a blog about one pendant, but I had to do it with this one.

Extravagant Greenstone Pendant with ten Greenstones plus two Thomsonites
A challenging pendant yet to be named. My two suggestions are “Extravagant Wire Whimsy” or “Don’s Wrestling Match”. Since I’ve already sold it, I told the new owner, she could name it.

Sometimes when wire-wrapping, things happen that you wish had not happened, and you end up going in a totally new direction. This is how I made a Great Lakes Gemstone Pendant on Steroids, and it started by an accident.

Closeup!

It was a heartbreaking moment. While creating a really nice Blue Datolite Pendant a week ago, during the final setting, the top of this rare gem fractured. I am capable of reworking a stone, but I decided, as a challenge, to use the wire frame; adapt it, so to speak, to make another totally different pendant.

The decision to change tracks in the middle of the race, was spurred by thrift, I didn’t want to waste the wire frame I had just built! I looked through a couple trays of Great Lakes Cabochons, and plucked out an amazing dark-eyed Thomsonite that fit well in the bottom of the original wire bundle, but it wasn’t nearly as big as the Datolite I had started with. So I paired this with both a slender Isle Royale Greenstone, and a very unusual Green and dark pink Prehnite. Wow, now I had the challenge I was looking for. How do you securely fit three Great Lakes stones in a space designed for one?

Fortunately, Bonnie (my wife), was not around for all the expletives, as I wrestled to re-shape this wire frame to accommodate new stones. There was much bending, pushing and pulling involved . Most of you do not wire wrap, so I have to explain that it is a finesse skill. Precious metal wire will harden as you work with it, and eventually, if you work it too much, will get brittle and break. After a couple decades of wire wrapping, I generally get a feel for when the wire will break. I HATE when this happens–it means you have wasted wire and time. You have to start all over again. I have to admit, the wire (and myself), were right on the edge of breaking.

close up of Calcite with copper in Greenstone
Notice the Copper included Calcite in the bottom of the long Greenstone.

The pendant took large quantities of coffee over three days, to get it right. I finished the original cage for the stones, but the pendant lacked balance. This is an artistic term that means that it looked “not right”. Not quite that it looked like crap, but something else was needed.

How about some Greenstone beads? Now that would be decadent, wouldn’t it? I strung 8 tiny Greenstone beads along on edge. After this more messing around took place. How do I fit this stone in, how do I attach this all together, that doesn’t look just right, this needs to be fit in and so on. Finally I added a Thomsonite Bead on the top. NAILED IT!! I just know when things have melded.

Extravagant Greenstone Pendant by Snob Appeal Jewelry
Thomsonite, Prehnite, Greenstone

Bonnie liked it also. If it passes the “Bonnie inspection” all is good. She may say “it’s nice” and bring me a cup of coffee, I feel worthy when she does this.

back side of wire pendant
I REALLY liked the rear of this pendant. Doesn’t it look like an abstract art project?.

One of my favorite parts of this pendant, is the back. The wire design on the back, accidentally; No wait; purposely came out amazing. Usually when we sell a pendant, the buyer will examine the front AND the back. I can’t wait for someone to carefully look at the back of this pendant.

When I finish a new pendant, and it passes the Bonnie quality control inspection, I always say that I “Got Lucky Again”. I think I got lucky on this crazy Great Lakes Gemstone on Steroids!

Visit our jewelry pages to see current selections:

Great Lakes Pendants

Greenstones

Thomsonite Pendants

Chlorastrolite or Michigan Greenstone–State Gemstone

Piles of mine waste rocks used to abound in the Keweenaw. Not so much anymore. There’s a lot of Greenstone here, but where are they?

Let’s look at some interesting tidbits about Michigan Greenstone, the state gem.

After lobbying by the Michigan lapidary community, Isle Royale Greenstone (Chlorastrolite) became Michigans Official State Gemstone on February 21, 1972. Gov. William G. Milliken signed a bill that had rapidly sped through the legislature with overwhelming majorities.

Reportedly the lawmakers had some smart remarks to make before they were finished. One Senator from Kalamazoo (Anthony Stamm), said It looks like stuff I put on my driveway at $40 a load.  Another legislator wanted to know if Chlorastrolite was any relation to the stuff that clogs arteries.Another lawmaker explained If you think my wife is going to trade in her Diamond for a Greenstone, you have rocks in your head.

A beautiful Isle Royale Greenstone.

Chemically Chlorastrolite is Hydrous Calcium Aluminum Silicate. It commonly has a polygonal mosaic pattern sometimes referred to as an alligator pattern. It can be light or dark green, but the pattern is much showier in lighter shades. Lighter green predominates Greenstones from Isle Royale, while many Keweenaw Greenstones are darker. A desirable Greenstone trait shows radiating lines exhibiting Chatoyancy like Tiger-eye.

A solid Greenstone has a hardness of 5.5 to 6.

Tumbled Greenstones ready for sorting. Most of these are good for jewelry.

Chlorastrolite is formed in vesicles (small holes in bubbly Botryoidal lava) in the upper strata of the lava flows. In many cases in the Keweenaw, the vesicles do not completely fill, and you get hollow nodules. Imagine cutting a large Greenstone, thinking how big and splendid and special it is, plus how much money it might be worth, and all of a sudden, you bust through to a hollow center. Everyone that cuts quantities of Greenstone has done this. It’s very frustrating indeed. I will leave out the expletives uttered when this happens.

On the other hand, sometimes a hollow core may have been later filled with another precious mineral found in this area–Thomsonite, Prehnite, Datolite, or even Copper. These elicit a WHOOP! sound from me. I have even seen hollow Greenstone with copper crystals inside. (For more on my favorite Greenstones with inclusions read The Shades and Patterns of Greenstone (Chlorastrolite) May 1, 2016

Sometimes I just take the entire Greenstone and matrix and pop the Greenstone out as needed.

A Greenstone found underwater off Isle Royale in1961 by Arthur Vierthaler is in the Smithsonian and is claimed to be the largest Greenstone ever found at one and a half inch by three inches. I have seen many larger, and have personally cut a two inch by four inch one myself.

Shall we go way back in time? In the 1890s to the 1900s Isle Royale Greenstones started to appear in New York City. Socialites assumed they were of French origin because of the name. These ladies were somewhat lacking in geographical knowledge, and although there was minor interest in stones from romantic France, when it was found they were from a remote Island in Lake Superior, interest waned. Michigan Greenstones were relegated to the curio category and only had a passing interest.

Greenstones from Isle Royale. Collected 50 years ago.

Greenstones had more recognition in the Midwest where they could be purchased at Wisconsin and Northern Michigan barbershops and saloons. Today, Greenstone dealers still do not get the customers for Greenstones that they warrant. Because Michigan Greenstones come from such a limited area of the world, few people have ever seen one. They are basically a one source gemstone and that source is the Isle Royale National Park, (where they’re illegal to remove), or in the Keweenaw Peninsula, where they’re becoming more scarce because of all the Private property and all the old dump piles having been crushed and hauled away for road fill.

Michigan Greenstones may resemble several other vesicle-filled stones that are found in these areas. These nodules can be Chlorite balls, Chlorite covered shot copper, Copper agates, Greenstones, or other things. We may find what we call Greenstone Wanna-Bes. On the outside these appear as if they may be Greenstones, but when we grind them, they become green dust or mud. They just didn’t get fully baked by the geologic forces I guess!

Over the years I have accumulated not only vast amounts of Rocks, Minerals, and Fossils, but occasionally when I purchase an old collections from an Estate or garage sale, I also see old rock books or, if I am lucky, some notes or historic data on rocks and minerals.

Years ago I visited an estate sale of a well known Geologist/rockhound and discovered a couple boxes of documents, maps, notes, articles, and books no longer in print. To me, these are just as valuable as any rocks I might find. These papers and books contained secret locations, historical data, and many, many other valuable resources. I cannot explain you how excited I was to find these boxes; even more excited then finding that bonus fry or three on the bottom of the McDonalds bag.

I started to dig through these boxes and other archival resources and see what tidbits I could find on Chlorastrolite (AKA Greenstone). I know I have written about Michigans State Gemstone many times, but I am always looking to find something new from the old articles. Much of the information in this blog is from my treasure trove of old resources.

The Chlorastrolite Now Michigans Official Gem by E.W. Courter Lapidary Journal November 1974

Footnote on Chlorastrolites by Lee Carter Lapidary Journal October 1969

Other information delved from papers of the late Don H. Clarke

At Snob Appeal Jewelry we sell high-quality, hand-crafted, wire-wrapped stone jewelry specializing in stones from the Great Lakes Area. You can see our Michigan Greenstone cabochons and jewelry, Lake Superior Agate jewelry and other Keweenaw stones, Petoskey Stone jewelry,and stone and agate jewelry from around the world.