- “Thunder Bay Amethyst (TBA12)” already exists in your wishlist
-
Crystalized Clam (OK10)
Notes specific to this specimen: Two excellent full clams trapped in matrix. Both are recrystallized calcite replaced with clear zones evident. NOTE: These clams do not have any of the honey calcite crystals. But they sure are very cool!
SIZE: 10″x 5″x 4″
Name / Species: Mercenaria permagna
Age: Pleistocene 2 Million Years
Unit: Nashua Formation
Site: Okeechobee County, Florida
Collected: 2023
Collected by: Jon KramerDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$265.00Crystalized Clam (OK10)
$265.00 -
Volcanic Bomb (EB4)
Notes specific to this specimen: Large classic plump fusiform bomb with great aerodynamic striations. It looks like it encountered another in flight but did not complete the merging with it. Natural breaks reveals chalcedony interior which fluoresces a vibrant green. A great specimen.
SIZE: 10″ x 5″ x 4″
NAME: Various forms
AGE: Pliocene Epoch- 5 million years
UNIT: Banbury Formation
SITE: Elko County, NevadaDATE: 2020
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$265.00Volcanic Bomb (EB4)
$265.00 -
North American Rift (RIFT3)
Notes specific to this specimen: Abundance of healed fractures makes this piece a beautiful zebra-striped pattern. Stark white quartz and a faint amethyst infills the fractures of jet-black Rove Formation. Cut front face is polished while the back is natural but just as impressive. This specimen is a “stand-up” with a cut flat bottom allowing it to sit upright to show off the display face. Back is naturally rough.
SIZE: 4″x 4″x 1.5″
Minerals: White Quartz, Citrine, Fluorite
Age: Mesoproterozoic Era – 1.1 billion years
Unit: Rove Formation
Site: Cerdito Prospect, Thunder Bay, Ontario, Canada
Collected: 2022
By: Jon & JulieDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$265.00North American Rift (RIFT3)
$265.00 -
Crystalized Clam (OK8)
Notes specific to this specimen: Calcite replacing multiple clam shells trapped in matrix, some with clearly defined crystals. One of these is a full clam with crystal zones evident.
SIZE: 11″x 5″x 5″
Name / Species: Mercenaria permagna
Age: Pleistocene 2 Million Years
Unit: Nashua Formation
Site: Okeechobee County, Florida
Collected: 2023
Collected by:Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$280.00Crystalized Clam (OK8)
$280.00 -
Gypsum, Variety Selenite (AG7)
Notes specific to this specimen: Very complex large modified rhomboid crystal pattern with mirror-clean faces. Nice clear crystal selenite with no inclusions. The very edges of some of the crystals show some wear but this only accents the beauty of the overall piece.
Size: 6″ x 4″ X 1″
NAME: Gypsum, variety Selenite
AGE: Triassic Period, 240 million years
UNIT: Moenkopi Formation
SITE: Mohave County, Arizona
DATE: 2019Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$280.00Gypsum, Variety Selenite (AG7)
$280.00 -
Rainbow Stromatolite (RS1)
Notes specific to this specimen: This is one of the original discovery pieces, collected by us in August 2025. It is characteristic of all the variety of colors found in this site. We’ve never seen such a variety of colors of stromatolite from a single site. It reminded us of all the colors of Arizona petrified wood – known as “Rainbow Wood” – and this became the source for our naming this new discovery “Rainbow Stromatolite”.
SIZE: 2″x 4″x 1.5″
Name Collenia sp. (possible new species)
Age Anamikean / Paleoproterozoic – 1.88 billion years
Unit Gunflint Iron Formation
Site Ontario, Canada
Date 2025Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$285.00Rainbow Stromatolite (RS1)
$285.00 -
Iron Stromatolites (ME11)
Notes specific to this specimen: Beautiful deep red agatization in these cross-cut colonies attest to the classic origin of this specimen as being from the old Mary Ellen Mine in Biwabik, Minnesota, the type locality for the Biwabik Iron Formation. The mine shut down over 50 years ago. We find these specimens in the old discard piles that surround the old pit. *This specimen comes with a Certificate of Authenticity and Origin.
SIZE: 4″ x 4″ x 1/8 – 3/8″
Name: Collenia undosa
Unit: Biwabik Iron Formation
Site: Biwabik Iron Range, Minnesota
Date: Mid 1990sDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$285.00Iron Stromatolites (ME11)
$285.00 -
Gunflint Chert (GIS11)
Notes specific to this specimen: This is a fantastic specimen! Multiple very clear stromatolite colonies throughout the specimen. All the more impressive because it’s from the world-famous Gunflint Iron Formation. This piece is from our original discovery in 2025. Beautiful deep red colonies with a natural black halo unlike anything we’ve ever seen. Polished with brilliant shine on front face only. Back and edges are naturally rough.
SIZE: 1.5″ x 3″
Name Collenia sp. (possible new species)
Age Anamikean / Paleoproterozoic – 1.88 billion years
Unit Gunflint Iron Formation
Site Ontario, Canada
Date 2025Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$285.00Gunflint Chert (GIS11)
$285.00 -
Minnesota Thomsonite (MNT001)
Notes specific to this specimen: Rare dense accumulation of nodules in matrix, from what was known as a “Bonanza” zone in the “Pink Pit”. Colors varied from pit to pit in the mine. The Pink Pit was the largest and most accessible pit and was right in the center of the Thomsonite Mine, adjacent to the parking area. On rare occasions we would mine into a “Bonanza” which was a zone especially dense with nodules. This piece has a sawn flat bottom with smoothed and polished front and natural rough back. It has a very bright, large single nodule on the top, sticking out of the matrix with a brilliant polish. It could be removed and cut for jewelry.
Size: 2.5″ x 3″ x 1.5″
Name / Species: Thomsonite
Age: Mesoproterozoic Era, 1.1 billion years
Unit: Terrace Point Basalt
Site: Alley Agate Shop Thomsonite Mine Cook County, Grand Marais, MInnesota
Collected: 1981
Collected by: Jon KramerDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$285.00Minnesota Thomsonite (MNT001)
$285.00 -
Crystalized Clam (OK13)
Notes specific to this specimen: Exceptional museum grade specimen. Classic full size clam loaded with juicy calcite crystals. No repairs, no touch up, no enhancements – just pure crystal joy. Full clam in matrix. Sits upright.
SIZE: 5″x 4″x 2″
Name / Species: Mercenaria permagna
Age: Pleistocene 2 - 4 Million Years
Unit: Nashua Formation
Site: Okeechobee County, Florida
Collected: 2026
Collected by: Jon KramerDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$290.00Crystalized Clam (OK13)
$290.00 -
Crystalized Clam (OK7)
Notes specific to this specimen: Great honey calcite crystals replacing one clam shell trapped in matrix. Some excellent radial calcite crystals are on this piece as well.
SIZE: 7″x 5″x 7″
Name / Species: Mercenaria permagna
Age: Pleistocene 2 Million Years
Unit: Nashua Formation
Site: Okeechobee County, Florida
Collected: 2023
Collected by:Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$310.00Crystalized Clam (OK7)
$310.00 -
Volcanic Bomb (EB6)
Notes specific to this specimen: Complex plump fusiform bomb with smooth aerodynamic striations. Apparently ran into another bomb during flight and part of that bomb is still attached but is not complete. Natural breaks reveal chalcedony interior which fluoresces a vibrant green. Unusual.
SIZE: 7″ x 4″ x 4″
NAME: Various forms
AGE: Pliocene Epoch- 5 million years
UNIT: Banbury Formation
SITE: Elko County, NevadaDATE: 2020
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$310.00Volcanic Bomb (EB6)
$310.00
