1 Septarian Nodule Lightening Stone Lake Michigan Unpolished 144.16 oz 9.0 lbs

Septarian (often called ‘Lightning Stones’) are natural mudstone concretions from ancient seafloor sediments. As the nodules dried and cracked, mineral-rich water later filled the fractures with pale calcite—creating the striking lightning-like veins you see.

• Quantity: 1 stone

• Type: Septarian (aka Lightning Stones)

• Origin: Lake Michigan, Southwest Michigan (USA)

• Finish: Unpolished, natural as found

• Total Weight: 144.16 oz / 9.0 lbs

• Size: See photos with a ruler for sizing

• What you’ll receive: Exactly the 1 stone pictured

Condition:
Natural, unpolished beach-collected stones with typical surf wear—minor pits, chips, and edges. Cleaned of loose sand only; no polishing or alterations. Photos provide the best representation of condition and include a ruler for scale.

Great For:
Collecting • Display bowls • Terrariums • Lapidary projects • Wire-wrapping • Classroom geology/cabinet specimens • Craft & décor

I offer combine shipping see details below.

General Information

• Item(s) are shown with a ruler or coin for easy size reference. 
• Detailed images provided to showcase item condition and features; take a look! 
• Please note that color representation may vary slightly based on your screen settings.
• If you have any questions or concerns, feel free to message me before making a purchase. Your satisfaction is my priority! 

Shipping Discounts

• Your item will be expertly packed for secure delivery, just as shown in the images.
• I'm a proud local USA seller with a focus on fast shipping
• Your order will be shipped the next day, sometimes even the same day!

• Save on shipping when you purchase multiple items! If you buy more than one item, you'll pay only one shipping cost for your entire order.

How It Works:

• Add all items you’d like to your cart.
• During checkout, the highest single shipping cost will apply, and all additional items will ship for free.

If for some reason the shipping discount doesn’t apply automatically, or if there are any other issues, just let me know you have another order, and I will happily combine shipping manually and/or provide you with a shipping refund. This combined shipping discount hopefully makes shopping more affordable and more fun!