San Francisco Natural Specimens
to
23
4
1
19
4
5
15
8
5
3
3
2,162
786
13
13
13
6
6
Height
to
Width
to
28
28
28
Item Ships From: San Francisco
Extra Large 12.5 in Luminescent Ammonite Fossil, Jurassic Cretaceous Period #LP3
Located in Point Richmond, CA
Madagascar
Jurassic - Cretaceous Period, 200 - 145 million years old
Dimensions: 12.75 x 11 x 2.25 in. / 32 x 28 x 6 cm
Weight: 12 lbs 14 oz/ 5.85 kg
In this example, the complex...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Precious Stone
Pair of Massive Brazilian Cathedral Geodes
Located in San Francisco, CA
Pair of Massive Brazilian Cathedral Geodes
Each weighs about 60 lbs
Category
20th Century Brazilian San Francisco Natural Specimens
Materials
Rock Crystal
Whole Ammonite Fossil, Mineral Specimen, Jurassic Cretaceous Period #E4G
Located in Point Richmond, CA
Madigascar
Jurassic - Cretaceous Period, 200 - 145 million years old
Dimensions: 6.5 x.5.25 × 1.25 in./ 16.5 × 13.5 × 3 cm
Weight: 1 lb 9 oz/ 710 gms
A richly colored example wit...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Precious Stone
Large 8 Inch Ammonite Specimen Cut Polished and Mounted Fossil
Located in Point Richmond, CA
Large 8 Inch Ammonite Specimen Cut Polished and Mounted Fossil - Jurassic - Cretaceous Period, 200 - 145 million years old
An excellent quality split ammonite fossil. We hand pick...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Stone
Matched Pair Split Ammonite Fossil Set Mineral Specimen
Located in Point Richmond, CA
Matched Pair Split Ammonite fossil mineral specimens
Jurassic - Cretaceous Period, 200 - 145 million years old
Measures: 5 x 4.25 x 0.5 in. / 13 x 10 x 1.5 cm
Height on custom d...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Stone
Whole Ammonite Fossil with Crystals, Mineral Specimen Jurassic Cretaceous #T7G
Located in Point Richmond, CA
Madagascar
Jurassic - Cretaceous Period, 200 - 145 million years old
Dimensions: 7.5 × 5.5 × 1.25 in./ 19 × 14 × 3 cm
Weight: 1 lb 9 oz/ 710 gm
In this example, the complex patte...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Precious Stone
Whole Ammonite Fossil with Druzy Chambers Jurassic Cretaceous #Z9A
Located in Point Richmond, CA
Madagascar
Jurassic - Cretaceous Period, 200 - 145 million years old
Dimensions: 7.75 × 6.5 × 1.75 in./ 19.5 × 16.5 × 4.5 cm
Weight: 3 lbs 2 oz/ 1.366 kg
Height on custom display...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Precious Stone
Natural Malachite Obelisk Mineral Specimen
Located in Point Richmond, CA
This one-of-a-kind malachite obelisk is one of the best I have come across, with pleasing proportions, a regal design, and a degree of complexity requiring greater skill and precisio...
Category
20th Century European Other San Francisco Natural Specimens
Materials
Malachite, Onyx
Whole Ammonite Fossil, Mineral Specimen, Jurassic Cretaceous Period #S5C
Located in Point Richmond, CA
Madagascar
Jurassic - Cretaceous Period, 200 - 145 million years old
Dimensions: 9.25 × 8 × 2 in. / 23.5 × 20.5 × 5 cm
Weight: 5.55 lbs / 2.424 kg
In this example, the complex pa...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Precious Stone
Large Handmade Natural Onyx Bowl, One of a Kind
Located in Point Richmond, CA
Handmade in Mexico
Carved from a single piece of onyx
One of a kind
Dimensions: 23 x 17 x 4.25 in. / 60 x 43 x 10 cm
A fluted, almost to the point of frilly, organic “oyster” shaped...
Category
21st Century and Contemporary Mexican Other San Francisco Natural Specimens
Materials
Onyx
Deep Handmade Natural Onyx Bowl, One of a Kind
Located in Point Richmond, CA
Handmade in Mexico
Carved from a single piece of onyx
One of a kind
Dimensions: 17 x 13.5 x 7 D in. / 43 x 34 x 18 D cm
A spectacular, organic, undulating vessel of cream trans...
Category
21st Century and Contemporary Mexican Other San Francisco Natural Specimens
Materials
Onyx
6.5 Inch Ammonite Fossil Cut Polished and Mounted Mineral Specimen
Located in Point Richmond, CA
6.5 Inch Ammonite Fossil Cut Polished and Mounted Mineral Specimen Jurassic - Cretaceous Period, 200 - 145 million years old
Cutting and polishing this ammonite has revealed an inte...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Stone
Whole Ammonite Fossil, Mineral Specimen, Jurassic Cretaceous Period #HJA
Located in Point Richmond, CA
Madagascar
Jurassic - Cretaceous Period, 200 - 145 million years old
8.75 x 7 x 2 in. / 22 x 18 x 5 cm
Weight: 4 lbs 14 oz/ 2.065 kg
Ammonites were cephalopods that resembled a s...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Precious Stone
Whole Ammonite Fossil, Mineral Specimen, Jurassic Cretaceous Period #D7U
Located in Point Richmond, CA
Madagascar
Jurassic - Cretaceous Period, 200 - 145 million years old
Dimensions: 8.75 × 7.5 × 1.875 in. / 22 × 19 × 4.75 cm
Weight: 4.125 lbs / 2.169 kg
Height on custom display ...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Precious Stone
Matched Pair Split Ammonite Fossil Set Mineral Specimen #L2L
Located in Point Richmond, CA
Jurassic - Cretaceous Period, 200 - 145 million years old
Dimensions: 8 × 6.25 × 0.75 in. / 20 × 16 × 2 cm
Dimensions on custom display stands: 10.5 × 5.5 × 3.5 in. / 27 × 14 × 9 c...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Stone
Whole Ammonite Fossil, Mineral Specimen, Jurassic Cretaceous Period #B3K
Located in Point Richmond, CA
Madagascar
Jurassic - Cretaceous Period, 200 - 145 million years old
Dimensions: 10 × 8.25 × 2 in./ 25.5 × 21. x 5 cm
Weight: 6.925 lbs / 2.984 kg
Height on custom display stand:...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Precious Stone
Naturally Formed Mineral, Clear Apophyllite Sculpture
Located in Point Richmond, CA
Naturally formed mineral, clear apophyllite sculpture
India
Measures: 11 x 8 x 4 in. / 28 x 20 x 10 cm
Height on custom display stand: 14 in. / 36 cm
Custom mounted on a ...
Category
15th Century and Earlier Indian Other Antique San Francisco Natural Specimens
Materials
Steel
Large 8 Inch Ammonite Fossil Cut Polished and Mounted Mineral Specimen
Located in Point Richmond, CA
Large 8 inch Split Ammonite Mounted Fossil Set
Jurassic - Cretaceous Period, 200 - 145 million years old
The cutting and polishing of this large pair revealed pale yellow-brown, cal...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Stone
Large Handmade Natural Onyx Bowl, One of a Kind
Located in Point Richmond, CA
Handmade in Mexico
Carved from a single piece of onyx
One of a kind
Dimensions: 20 x 15.5 x 4 in. / 51 x 39.5 x 10 cm
A gently fluted, low, organic vessel from naturally colore...
Category
21st Century and Contemporary Mexican Other San Francisco Natural Specimens
Materials
Onyx
Naturally Formed Mineral Peach Stilbite on Apophyllite Sculpture
Located in Point Richmond, CA
Naturally formed mineral peach stilbite on apophyllite sculpture
A mineral specimen in the form of an abstract walking figure. Mounted on a custom walnut and satin nickel painted ba...
Category
15th Century and Earlier Indian Other Antique San Francisco Natural Specimens
Materials
Crystal
Mounted Naturally-Formed Indian Mineral Clear Apophyllite
Located in Point Richmond, CA
Mounted naturally-formed Indian mineral: clear apophyllite
An attractive specimen that reflects the light similarly to a multifaceted gem giving the specimen an unusual brightness. ...
Category
15th Century and Earlier Indian Other Antique San Francisco Natural Specimens
Materials
Crystal
Mounted Specimen: Apophyllite, Stilbite, Chalcedony
Located in Point Richmond, CA
Mounted Specimen: Apophyllite, Stilbite, Chalcedony #L9W
Dimensions: 6 x 8.5 x 2.5 in. / 15 x 22 x 6 cm
Height on custom display stand: 9 in. / 23 c...
Category
15th Century and Earlier Indian Other Antique San Francisco Natural Specimens
Materials
Steel
Naturally-Formed Mineral Specimen Peach Stilbite on Apophyllite Sculpture
Located in Point Richmond, CA
Naturally-Formed Mineral: Peach Stilbite on Apophyllite sculpture
A mineral specimen in the form of an abstract walking figure. Mounted on a custom t...
Category
15th Century and Earlier Indian Other Antique San Francisco Natural Specimens
Materials
Crystal
Large Scale Banalinga 'Shiva Lingam' Stone for Display
Located in San Francisco, CA
Large Scale Banalinga (Shiva Lingam) stone for display
Outstanding large scale specimen from India
Dimensions 9" long x 5.5" diameter
Banalinga is discovered in nature and not carved or crafted by human hands.
This Shiva Lingam comes exclusively from the Narmada River, one of India’s seven sacred holy sites. The stones resemble markings found on the forehead of Lord Shiva...
Category
15th Century and Earlier Indian Antique San Francisco Natural Specimens
Materials
Stone
Shell Currency Yua Bride's Price, Papua New Guinea
Located in Point Richmond, CA
Yua Shell Currency, Bride’s Price
Sepik River Region, Papua New Guinea
Hand carved from a clam shell
Measures: 7.5 x 8.5 in / 19 x 22 cm
Height on c...
Category
20th Century Papua New Guinean Other San Francisco Natural Specimens
Materials
Shell
Shell Currency Yua Bride's Price, Papua New Guinea
Located in Point Richmond, CA
Yua Shell Currency, Bride’s Price
Sepik River Region, Papua New Guinea
Hand carved from a clam shell
Measures: 7 x 7.5 in / 18 x 19 cm
Height on cus...
Category
20th Century Papua New Guinean Other San Francisco Natural Specimens
Materials
Shell
Contemporay Natural Pink White and Brown Onyx Table Top Lamp
Located in Point Richmond, CA
Contemporary natural pink, white, and brown onyx tabletop lamp
Created from two thick slices of onyx, hollowed out to construct concave circles, formi...
Category
21st Century and Contemporary Mexican Other San Francisco Natural Specimens
Materials
Onyx
Hand Carved Chalcedony Lizard Mineral Specimen
Located in Point Richmond, CA
This nicely proportioned, finely carved hardstone sculpture captures these reptiles’ enigmatic, curious presence. The milky blue translucence of th...
Category
21st Century and Contemporary Mexican Other San Francisco Natural Specimens
Materials
Other
Related Items
High-Grade Amethyst Cathedral Geode
Located in Ametista Do Sul, BR
A Gorgeous, High-Grade Galaxy Amethyst Geode with Rare Inclusions
▫️ Description
Magnificent, rare and colorful, this Amethyst Geode features a stunning multi-colored, deep purple Amethyst crystals on a perfectly cathedral shape geode. Imagine this geode enhancing your space, offering a calming energy.
What first catches the eye in this geode is the variety and beauty of its Amethyst crystals. At the top, a sparkling purple galaxy druzy resembles a night sky, beautifully accented by elongated flower formations naturally filled with golden goethite inclusions—reminiscent of shooting comets.
On the bottom half, a crown-like formation of large Amethyst points has uniquely taken shape. This rare formation is found in only a handful of mines, making this geode truly one-of-a-kind. Within and around this "crown," additional calcite crystals and smaller Amethyst points with unique inclusions further enhance the specimen’s beauty.
Overall, this geode stands out not only for its vibrant banded agate but also for its exceptional variety of mineral inclusions, such as Goethite (Cacoxenite), Calcite, and other fascinating mineral formations.
Perfectly sized at just over 21 inches tall and weighing 39 lbs, it’s ideal for display as a centerpiece or addition to your collection. The geode's base consists of a thin Basalt layer, securely reinforced to protect and showcase its intricate and delicate natural structure.
Ethically sourced directly from Ametista do Sul, Brazil—renowned for producing some of the world's finest Amethyst—this specimen brings peace of mind along with exceptional beauty.
This high-quality Amethyst geode is sure to become a treasured highlight in your collection or decor. Please view the photos for additional details, and feel free to message us with any questions or special requests. 🤍
▫️ Amethyst Cathedral Geode...
Category
2010s Brazilian San Francisco Natural Specimens
Materials
Crystal, Quartz, Rock Crystal
Ammonite Fossil : Kranaosphinctes, from Madagascar
Located in MARSEILLE, FR
This fossil ammonite specimen, named Kranaosphinctes, is from Madagascar.
It is a little one (36cm diameter, knowing it can go wider than 50cm).
They were found alive during the cr...
Category
2010s Malagasy San Francisco Natural Specimens
Materials
Stone
Fossil Agate Coral with Iridescent Ammonites
By Interi
Located in Dublin, Dalkey
Fossil agate coral adorned with iridescent fossil ammonites.
The grey piece of fossil agate coral is cut and polished and adorned with the iridescent...
Category
15th Century and Earlier American Organic Modern Antique San Francisco Natural Specimens
Materials
Agate, Coral
Mantelliceras Fossil Ammonite On Steel Mount
By Modenature
Located in Scorton, GB
The latest edition to arrive at THE FOSSIL STORE™ is our famous and exquisite series of Mantelliceras ammonites presented on our designed swivel mount. The newly prepared Mantellicer...
Category
15th Century and Earlier North African Prehistoric Antique San Francisco Natural Specimens
Materials
Limestone, Stainless Steel
An Ammonite Fossil
Located in Schellebelle, BE
A beautiful Ammonite Fossil,
this extinct invertebrates marine animal lived 160 million years ago,
beautiful patina and shine of the stone,
beautiful array of colors,
very decorative...
Category
15th Century and Earlier Malagasy Antique San Francisco Natural Specimens
Materials
Sandstone
Genuine Natural Calcified Ammonite Fossil, '2.3 LBS'
Located in New York, NY
Museum-quality, fossilized and calcified ammonite shell with an iridescent, opalized shimmer displaying hints of vibrant red. The fossilized shells of ...
Category
15th Century and Earlier Antique San Francisco Natural Specimens
Materials
Other
Collection of 7 Ammonite Fossils
Located in Wormelow, Herefordshire
A superb set of 7 ancient prehistoric ammonite fossils presented on our small turned painted plaster bases. This group showcases ammonites of varyi...
Category
15th Century and Earlier Antique San Francisco Natural Specimens
Materials
Stone
Opalised Iridescent Ammonite Fossil
Located in Wormelow, Herefordshire
A complete prehistoric Cleoniceras opalised iridescent ammonite fossil, originating from Madagascar, presented on an exclusive muse...
Category
15th Century and Earlier Malagasy Antique San Francisco Natural Specimens
Materials
Shell
Prehistoric Fossil Fish Specimen
Located in Wormelow, Herefordshire
This rare fossil of a prehistoric fish is an impressive specimen originating from Brazil, preserved by time over millions of years. Mounted on a metal...
Category
15th Century and Earlier Brazilian Antique San Francisco Natural Specimens
Materials
Stone, Metal
Very Large Amethyst Cathedral Geode
Located in Delft, NL
Very large amethyst cathedral geode
Amethyst cathedral geode of 69 cm high and 43 kilos
This amethyst cathedral geode has a natural shap...
Category
20th Century San Francisco Natural Specimens
Materials
Amethyst
Collection of 5 Natural Mineral Specimens
Located in Wormelow, Herefordshire
A varied and fascinating collection of 5 natural mineral specimens, ex. private British collection.
Each presented on an exclusive small painted display plinth, this group contains ...
Category
15th Century and Earlier Antique San Francisco Natural Specimens
Materials
Amethyst, Malachite, Multi-gemstone, Quartz
Calycoceras Asiaticum Fossil Ammonite & Bronzed Stand
By Modenature
Located in Scorton, GB
THE FOSSIL STORE AES Bronze stand series is an excellent example of a double-sided Calycoceras asiaticum ammonite measuring 205mm. Now transformed into ...
Category
15th Century and Earlier British Prehistoric Antique San Francisco Natural Specimens
Materials
Limestone, Bronze
Previously Available Items
Amethyst Geode Mineral Specimen #P6V
Located in Point Richmond, CA
A cut and polished geode with the silhouette of a crouching animal
Dimensions: 7 × 3 × 3.5 in. / 18 × 7.5 × 9 cm
Height on custom Walnut display stand: 4.5 in. / 11.5 cm
One of a ...
Category
15th Century and Earlier Brazilian Other Antique San Francisco Natural Specimens
Materials
Amethyst
Amethyst Geode Mineral Specimen #C9Z
Located in Point Richmond, CA
A cut and polished geode with the silhouette of a crouching animal
Dimensions: 7 w × 3.5 h × 4.5 d in./ 18 w x 9 h x 11.5 d cm.
Height on custom Lacewood display stand: 5 in. / 12....
Category
15th Century and Earlier Brazilian Other Antique San Francisco Natural Specimens
Materials
Amethyst
Amethyst Geode Mineral Specimen #M2Y
Located in Point Richmond, CA
A cut and polished geode with the silhouette of a crouching animal
Dimensions: 3.25 h x 4.5 w x 3 d in. / 8 h x 11.5 w x 7.5 d cm
Height on custom display stand 5.25 in. / 13 cm
O...
Category
15th Century and Earlier Brazilian Other Antique San Francisco Natural Specimens
Materials
Amethyst
Very Large 10.25 Inch Ammonite Fossil Cut Polished and Mounted Mineral Specimen
Located in Point Richmond, CA
Very Large 10.25 Inch Ammonite Fossil Cut Polished and Mounted Mineral Specimen Jurassic - Cretaceous Period, 200 - 145 million years old
This unusually large example has rich-brown...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Stone
H 10.25 in W 8.75 in D 1 in
19th Century Taxidermy Blowfish Still Life
Located in Ross, CA
Originally from the Costa Brava in Spain, and brought to America near the turn of the last century, this incredible taxidermy blowfish with shells and Mediterranean sea elements rema...
Category
Late 19th Century Spanish Spanish Colonial Antique San Francisco Natural Specimens
Materials
Pewter
Pair of Massive Brazilian Cathedral Geodes
Located in San Francisco, CA
Pair of Massive Brazilian Cathedral Geodes
Category
21st Century and Contemporary San Francisco Natural Specimens
Materials
Rock Crystal
Complete Giant Clam Shell Specimen Tridacna
Located in San Francisco, CA
Tridacna (giant clam) is a genus of large, saltwater clams, with striated shells with 4-6 fluted folds. This complete shell sits beautifully at an angle, as though it's floating. It ...
Category
20th Century Organic Modern San Francisco Natural Specimens
Materials
Shell
Matched Pair Split Ammonite Fossil Set Mineral Specimen
Located in Point Richmond, CA
Matched Pair Split Ammonite fossil mineral specimens
Jurassic - Cretaceous Period, 200 - 145 million years old
Measures: 4 x 3.25 x 0.25 in. / 10 x 8 x 1 cm
Height on custom display stands: 6.25 in. / 16 cm
An excellent quality split ammonite fossil. We hand pick each set.
Ammonites were cephalopods that resembled a squid with a shell. The predatory mollusks had eyes, tentacles, and spiral shells...
Category
15th Century and Earlier Malagasy Other Antique San Francisco Natural Specimens
Materials
Stone
Set of 2 Tall Natural Onyx Table Lamps
Located in Point Richmond, CA
Set of 2 Tall Natural Onyx Table Lamps
Natural Polished Onyx
5-sided, open in the bottom to facilitate changing the bulbs
Measures: 32 x 8 x 8 in. / 81 x 20 x 20 cm
These pale green lamps...
Category
21st Century and Contemporary Mexican Other San Francisco Natural Specimens
Materials
Onyx
Miocene Period Fossilized Sand Dollar or Sea Biscuit Very Large
Located in Point Richmond, CA
This attractive example of a Madagascar fossilized sand dollar is expertly cleaned and polished to retain the endoskeleton (outer shell) preserving excellent definition and details. ...
Category
15th Century and Earlier African Other Antique San Francisco Natural Specimens
Materials
Other
Large Fossilized Sand Dollar, One of a Kind #W2G
Located in Point Richmond, CA
Clypeaster Echinoid (Sea Urchin)
Miocene Period (5 - 23 million years old)
Morocco
3.75 h x 6.5 w in. / 9.5 x 16.5 cm
This attractive example of a fossilized sand dollar is expertly cleaned and polished to retain the endoskeleton (outer shell), preserving excellent definition and details. With cream and honey-colored tones and soft edges, it is a fascinating and beautiful specimen.
Animals of the Clypeaster genus are more commonly referred to as "sea biscuits” or “cake urchins.” The genus first appeared in the Late Eocene Period (38-34 million years ago) and survives until today. The genus name Clypeaster is derived from the Latin “clypeus” (meaning round shield...
Category
15th Century and Earlier African Other Antique San Francisco Natural Specimens
Materials
Other
Decoratice Shell Orb
Located in Point Richmond, CA
A natural shell ball of primarily white shells attached at one end of the shell. The result is a highly textured round form of organic material. Made from limpet shells.
Can be used...
Category
21st Century and Contemporary American Other San Francisco Natural Specimens
Materials
Shell
