Items Similar to Madagascar Septarian Calcite half nodule mounted on a custom acrylic base

Septarian Druzy Egg from Madagascar '14.5 Lbs'

Fossilized Clamshell with Naturally Formed Pearl on Polished Agate Base

Polished Septarian Freeform Sculpture – Natural Décor Accent

Cretaceous Period Calcite Septarian Nodule on Custom Stand

Yacare Natural Smokey Brazilian Quartz Point Mounted on Custom Acrylic Base

Beautiful Agate Geode Slice

Want more images or videos?

Request additional images or videos from the seller

1 of 11

Madagascar Septarian Calcite half nodule mounted on a custom acrylic base

Name: Madagascar Septarian Calcite half nodule mounted on a custom acrylic base
Brand: Pietra Gallery
Rating: 4.8 (16 reviews)

$790

£598.32

€698.88

CA$1,130.87

A$1,146.37

CHF 652.02

MX$13,954.52

NOK 7,647.56

SEK 7,666.25

DKK 5,224.10

About the Item

Septarian Calcite Half Nodule Madagascar Mounted on Custom Acrylic Base This polished half-nodule reveals the striking internal structure of a Septarian concretion from Madagascar, composed primarily of golden calcite, aragonite, and sedimentary matrix. Formed over millions of years, septarian nodules are the result of volcanic activity and mineral sedimentation, with internal cracking patterns (called “septaria”) filled in by secondary crystal growth. This particular specimen displays a rich mosaic of honey-colored calcite veins against an earthy, cracked matrix—offering a compelling visual contrast between crystalline geometry and organic formation. The half-nodule has been expertly cut and polished to highlight these natural patterns, creating a sculptural cross-section of deep geological time. Mounted on a custom-designed clear acrylic base, the piece achieves a clean, floating presentation that emphasizes its symmetry and texture. Equal parts natural history specimen and contemporary object, it is ideal for collectors, interior spaces, or educational displays exploring the intersection of art and Earth science. Provenance: Origin: Madagascar Material: Septarian Nodule (Calcite, Aragonite, Limestone Matrix) Mount: Custom acrylic base with gallery-standard support Features: Polished half-nodule with visible crystal structure and septarian patterning

Creator:
Pietra Gallery (Workshop/Studio)
Dimensions:
Height: 9.45 in (24 cm)Width: 8.27 in (21 cm)Depth: 3.55 in (9 cm)
Style:
Organic Modern (In the Style Of)
Materials and Techniques:
Other
Place of Origin:
Mexico
Period:
2010-
Date of Manufacture:
2025
Production Type:
New & Custom(One of a Kind)
Estimated Production Time:
Available Now
Condition:
Seller Location:
Polanco, MX
Reference Number:
Seller: SPCA-24101018071stDibs: LU2520345450172

More From This Seller

View All

Madagascar Septarian Calcite half nodule mounted on a custom acrylic base

By Pietra Gallery

Located in Polanco, CDMX

Septarian Calcite Half Nodule Madagascar Mounted on Custom Acrylic Base This polished half-nodule reveals the striking internal structure of a Septarian concretion from Madagascar, ...

Category

2010s Mexican Organic Modern Mounted Objects

Materials

Other

Pair of Belgium Calcite Septarian Nodule Natural Form on Custom Metallic Stand

By Pietra Gallery

Located in Polanco, CDMX

Pair of Belgium calcite Septarian nodule natural form on metallic base. Its name comes from Latin “Septem”, meaning seven years. This is because these nodules tend to crack at 7 p...

Category

2010s Mexican Organic Modern Natural Specimens

Materials

Metal

Beautiful One of a Kind in Organic Shape Septarian Bowl from Utah

By Pietra Gallery

Located in Polanco, CDMX

Beautiful one of a kind in organic shape Septarian bowl from Utah.

Category

2010s Mexican Organic Modern Decorative Bowls

Materials

Other

Beautiful One of a Kind in Organic Shape Septarian Bowl from Utah

By Pietra Gallery

Located in Polanco, CDMX

Beautiful one of a kind in organic shape Septarian bowl from Utah.

Category

2010s Mexican Organic Modern Decorative Bowls

Materials

Other

Agatized fossil Coral mounted on custom acrylic display, Oligocene era

By Pietra Gallery

Located in Polanco, CDMX

Origin: Tampa Florida, USA Period: Oligocene 25 to 38 million years ago Agatite Coral is produced when silica in the ocean water hardens, replacing limestone corals with a form of q...

Category

2010s Mexican Organic Modern Mounted Objects

Materials

Coral

Organic Brazilian Shape Agate Slab on a Custom Acrylic Stand

By Pietra Gallery

Located in Polanco, CDMX

Top grade agate slab from Brazil Agates are formed in rounded nodules, which are sliced open to bring out the internal pattern hidden in the stone. Their f...

Category

2010s Mexican Organic Modern Mounted Objects

Materials

Agate

Septarian Nodule on custom stand

Located in MILL, NL

A beautiful cross-section of a Septaria nodule on a metal stand. Septaria nodules are fossilised mud bubbles and are around 50 to 70 million years old. Belgium is a major source of t...

Category

Antique 15th Century and Earlier Natural Specimens

Materials

Clay, Precious Stone

Septarian Nodule Sculpture on Metal Stand, Belgium, 20th Century

Located in Linkebeek, BE

Septarian Nodule Custom on stand Fossil - Mineral - Decoration Measures : 26x14cm H:38cm Magnificent cross-section of Septarian nodules on a metal stand. Septarian nodules are fossi...

Category

20th Century Belgian Natural Specimens

Materials

Stone

Septarian "Egg" Geode from the Cretaceous Period

Located in Bradenton, FL

This Septarian "Egg" Geode is shaped by deep time and reveals a dramatic interior of crystalline textures and geometric patterning. This septarian nodule has been expertly polished i...

Category

Antique 15th Century and Earlier American Organic Modern Natural Specimens

Materials

Rock Crystal

Cretaceous Period Calcite Septarian Nodule on Custom Stand

Located in Chapel Hill, NC

A Cretaceous period calcite septarian nodule, from Utah, resting on custom marble & brass plated stand. Exceptional crystaline interior shapes. Mid century modern stand...

Category

Antique 15th Century and Earlier American Natural Specimens

Materials

Marble, Brass

Septarian Druzy Geode Freeform from Madagascar (17.5 lbs)

Located in New York, NY

This 17.5 lbs top quality large Septarian druzy geode Egg from Madagascar features an exposed area lined with dazzling druzy quartz crystals, as well as a polished back side, providi...

Category

21st Century and Contemporary Malagasy Natural Specimens

Materials

Crystal, Other

Polished Septarian Freeform Sculpture – Natural Décor Accent

Located in New York, NY

This polished septarian freeform sculpture immediately draws the eye with its dramatic network of calcite‑filled veins and rich natural color palette. To begin, the piece features wa...

Category