- You cannot add another "Kona Dolomite (KONA9)" to your cart. View cart
-
Rainbow Stromatolite (RS4)
Notes specific to this specimen: Another one of the original discovery pieces, collected by us in August 2025. Unique honey-color colonies with unusual dark laminae. Never seen anything like this!
SIZE: 2″x 2″x .75″
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.
$165.00Rainbow Stromatolite (RS4)
$165.00 -
Cerdito Prospect Rift Crystals (CP11)
Notes specific to this specimen: White druzy quartz with just a hint of purple dominates top of this specimen with some clear crystals as well. Sides show multiple healed fractures. Take a look at the cut bottom and you’ll see the very graphic splitting of the matrix and the subsequent infilling.
SIZE: 6″ x 3″ x 3″
Quartz – Amethyst, Smokey, Citrine, Clear
AGE: Mesoproterozoic Era – 1.1 billion years
UNIT: Rove Formation
SITE: Thunder Bay, Ontario, Canada
DATE: 2022Documentation: This authentic mineral specimen comes with a Certificate of Authenticity and Origin.
$180.00 -
Agatized Algae (AA3)
Notes specific to this specimen: This is a piece of a much larger specimen. While it is not complete, the color and texture of this piece is incredible. Beautiful, multicolored bubblegum agate all over it!
SIZE: 4″x 2″x 2″
NAME: Undescribed species
AGE: Jurassic Period- 165 million years
UNIT: Curtis Formation
SITE: Emery County, Utah
DATE: 2010Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$185.00Agatized Algae (AA3)
$185.00 -
Agatized Algae (AA7)
Notes specific to this specimen: Small but complete algal ball – a round specimen with great bubblegum agate skin on the upper (convex) side and a nice multicolored carnelian agate underside (convex).
SIZE: 4″x 3″x 2″
NAME: Undescribed species
AGE: Jurassic Period- 165 million years
UNIT: Curtis Formation
SITE: Emery County, Utah
DATE: 2010Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$185.00Agatized Algae (AA7)
$185.00 -
Kona Dolomite (KONA10)
Notes specific to this specimen: This is an excellent sliced section showing multiple stromatolite colonies with distinct layers (laminae). The clear layering is unusual for this slightly metamorphosed material. It has a smooth back and a flat bottom so it stands up nicely.
SIZE: 6″ x 3″ x 1″
NAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2023Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$185.00Kona Dolomite (KONA10)
$185.00 -
Gypsum, Variety Selenite (AG1)
Notes specific to this specimen: Large crystals with nearly optical clarity. Modified rhomboid shape with nice clear crystal and no inclusions. Mirror shine faces, no scratches.
Size: 7″ x 3″ 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.
$185.00Gypsum, Variety Selenite (AG1)
$185.00 -
Gypsum, Variety Selenite (AG3)
Notes specific to this specimen: Clean large rhomboidal crystal shape that is common in these crystals but not found in this size with this clean quality. Nice clear crystal with no inclusions. Mirror shine faces, no scratches.
Size: 6″ x 3″ 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.
$185.00Gypsum, Variety Selenite (AG3)
$185.00 -
Agatized Coral (AC4)
Notes specific to this specimen: A very nice multi-chambered piece with a cut and polished carnelian agate face. It also has a natural opening on the other end. This specimen is mounted on native Suwanee Limestone – which is the matrix material these specimens weather out of. You won’t see that anywhere else.
SIZE: 8″ x 5″ x 5″
NAME: Several species
AGE: Oligocene Epoch- 34 million years
UNIT: Suwanee Limestone
SITE: Lowndes County, Georgia
DATE: 2021Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$194.00Agatized Coral (AC4)
$194.00 -
Agatized Algae (AA8)
Notes specific to this specimen: Strange shape with a variety of colors. This is one of the more unusual specimens we’ve seen – it contains relic cracks from the collapse of the original structure and a variety of textures and colors. Which end was up? We cannot tell on this one! Zoom in on the bubbly side – it’s awesome!
SIZE: 5″x 3″x 2″
NAME: Undescribed species
AGE: Jurassic Period- 165 million years
UNIT: Curtis Formation
SITE: Emery County, Utah
DATE: 2010Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$220.00Agatized Algae (AA8)
$220.00 -
Kona Dolomite (KONA9)
Notes specific to this specimen: This is an excellent sliced section showing multiple stromatolite colonies with distinct layers (laminae). The clear layering is unusual for this slightly metamorphosed material. It has a smooth back and a flat bottom so it stands up nicely.
SIZE: 6″ x 3″ x 1″
NAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2023Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$245.00Kona Dolomite (KONA9)
$245.00 -
Agatized Algae (AA4)
Notes specific to this specimen: A complete nodule featuring bullseye and bubblegum agate with a rich variety of textures and colors. The cracks are relics left over from when the original algal ball collapsed in on itself 165 million years ago, making this a very dynamic piece.
SIZE: 4″x 4″x 2″
NAME: Various species
AGE: Jurassic Period- 165 million years
UNIT: Curtis Formation
SITE: Emery County, Utah
DATE: 2010Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$265.00Agatized Algae (AA4)
$265.00 -
Crystalized Clam (OK10)
Crystalized fossil clams like this are exceptionally rare. These clams lived in a shallow sea that covered most of Florida 2 million years ago. A sudden storm event buried the clams, trapping cavities inside. When the shells began to dissolve, it provided the material necessary to grow calcite crystals in the open spaces. These unusual fossils are known from only one site, an old quarry near Lake Okeechobee. The quarry played out and flooded in 2007. We excavated this in 2023. An attractive and informative display card accompanies the specimen.
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: Mercenaria permagna
AGE: Pleistocene 2 million years
UNIT: Nashua Formation
SITE: Okeechobee County, FloridaDocumentation: 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