Agate is a variety of chalcedony characterized by successive deposits of different colors or tones.
It is part of the "fine stones". Blue agate owes its color to the presence of mineral impurities.
[...]
Haute Epoque
Complete facade of a small Gothic chest, circa 1500,
consisting of 3 panels, including the 2 on the sides with windows.
Very beautiful earthy / gray patina from Renaissance period
[...]
Magnificent specimen of Desert Rose, from Morocco, with an estimated age of over 14 million years. This fascinating piece is a natural work of art, perfect for collectors, mineral lovers or those who [...]
For sale is an authentic fossil Woolly Mammoth molar (Mammuthus primigenius), an exceptional piece of natural history dating back to the Ice Age. This fossil is a perfect example of this species' adap[...]
Appearing during the Paleozoic, during the Devonian period, ammonites (or Ammonoidea) are a subclass of fossil cephalopod mollusks. This species disappeared during the great expansion of the Cretaceou[...]
Important collection of fossil shark teeth several million years old from the Khourigba phosphate mines in northern Morocco. The numerous pieces are presented in a molded display case from the mid-20t[...]
Exceptional pyramid-shaped meteorite with its complete fusion crust. It is a chondrite meteorite, which are the oldest rocks in the solar system, having undergone little or no geochemical reworking si[...]
Exceptional specimen of free-form malachite on foot. Malachite is a copper carbonate hydroxide mineral. It is often found in nature with the related azurite. Malachite was worked as a gemstone very ea[...]
Beautiful cross section of a septarian nodule on a metal stand. Septarian nodules are fossilized mud bubbles that are 50-70 million years old. Belgium is one of the main sites for the discovery of the[...]
A charming and rare owl whistle or bird call. The tail forms the whistle and the top of the head has a hole for the air to escape. The bird has (the remains of) a green tail, head and breast and brown[...]
Mammoth Femur Huge fossil femoral bone of a woolly mammoth. The bone was fished in the North Sea and then stabilized. 81cm long the femur alone! About 100,000 years old Custom-made base by BAM - Arman[...]
Nice lot of 15 fossil shark teeth Squalicorax pristodontus,
Authentic fossils, no re-gluing. From 18 to 30 mm approximately.
Age: - 72 to - 66 million years: Maastrichtian (last stage of the Creta[...]
Set comprising two polished ammonite fossils and a polished calcareous half-ammonite. H. 11 x W. 12 x D. 9 cm (pair of ammonites) H. 14 x W. 17 x D. 2 cm (half-ammonite)
Beautiful cross section of a septarian nodule on a metal stand. Septarian nodules are fossilized mud bubbles that are 50-70 million years old. Belgium is one of the main sites for finding these object[...]
Tuft of woolly mammoth hair (Mammuthus primigenius, Siberia, Pleistocene), presented in a vial on a turned wooden pedestal, under an old globe, old-style label. Ideal cabinet of curiosities.
Red coral branch set on a Gothic embossed brass base.
Coral, brass.
15th century.
h. 15 in. ; w. 11,8 in.
A branch of red coral mounted on a Gothic embossed and chased brass chalice base. The de[...]
RARE fossilized mammoth tooth and base. /3 Patinated metal base, solid and sober. Dimensions:
With base: Height: 15.4 cm Weight: 0.9 kg.
Base: 12 cm x 6.3 cm.
Tooth alone: L: 11 cm H: 5.9 cm Depth:[...]
Gothic copper alloy book clasp with openwork decoration of a stylized virgin and child, on the side a “N” in Gothic.
Copper alloy with black patina.
Europe (Germany?), 15th century.
80 x 37mm.
[...]
Very beautiful gilded bronze harness pendant representing a four-leaf clover.
15th century.
11.44 g.
40 x 33 mm.
This format could also have been used for dog vervelles (unlike those used for [...]
Rome, Imperial Period, ca. 1st century CE. An elegant bronze and lead steelyard weight depicting a Cherub with wings, shown wearing a chain around his neck and with white eyes. with his wavy hair fant[...]
A double-sided illuminated manuscript on parchment hand-written and coloured from the Gothic period (15th century)
This is a page from a liturgical book such as the Psalters and courtly literature
T[...]
Gilt bronze buckle plate with bas-relief decoration of a griffin in profile raising its right foreleg; four rivets on the reverse.
12th/13th century
L.: 4.7 cm. The style of this griffin decoratin[...]
Superb natural twin of 3 pyrite cubes, or “Fool’s Gold”.
During the Gold Rush of the 19th century, many people mistook pyrite for gold because of its metallic shine.
Authentic crystal. Very pret[...]
Curious sea urchin Pseudocidaris mammosa on limestone matrix, raised into living position with its radioles (club-shaped), characteristic of its genus.
Stage and Age: Kimmeridgian (Upper Jurassic):[...]
a completely fossilized mammoth molar
The last woolly mammoth disappeared at the end of the Pleistocene, around ten thousand years ago. Climate change, not humans, caused the mammoth's extinction 4,0[...]
Medieval bronze seal engraved with a Gryllus.
French or English, 14th century.
Measures 1.8 x 1.3cm.
Weighs 3.62 grams.
Engraved with the word ‘PRIVE’ (private) and the initials of the own[...]
Selection of 3 Gogottes de Fontainebleau fragments. On modern black oak base. Les Gogottes de Fontainebleau, a rare masterpiece of natural art from the Fontainebleau region of France. Forged over mill[...]
Nice batch of 16 minerals from the four corners of the world. Some on bases.
Spearhead gypsum (on base) from Neuilly-sur-Marne (Seine et Marne), Rose Quartz from Brazil (on base), 3 translucent Quart[...]
A Medieval bronze seal of a pair of birds either side of a tree or flower.
English, 14th century.
Measures 3 x 1.9 cm.
Weighs 7.65 grams.
The inscription appears to read Inscription of ‘SI[...]
A Medieval bronze seal of a large bird with a branch in its beak.
English, 14th century.
Measures 2.7 x 1.6 cm.
Weighs 5.87 grams.
The inscription appears to read 'IESV: SEL BON E LEL', wh[...]
A Medieval bronze seal belonging to a Rector.
English, 14th century.
Measures 4 x 2.5 cm.
Weighs 17.62 grams.
Seal design shows a seven petal flower with a six point star above and crescen[...]
Large ammonite mounted on a wooden base, stable, dimensions approximately 37 cm by 24 cm for an average thickness of 7 cm, weight approximately 15 kg, beautiful effect for a cabinet of curiosities....[...]
A beautiful and large ammonite, dimensions 28 cm long by 23 cm wide, thickness 7/8 cm, good condition just dusted!!! Weight over 5 kg ....For any information 0778337598
The shipping price seems high but this bone really weighs too much... My household scale explodes... but that's normal for a mammoth ulna. Coming from Pangea, namely our current North Sea, at the end [...]
Silver medallion depicting Frederick's II eagle, made using the relief prop technique. In the center is a round cabochon of agate. The object, highly oxidized, made of low-grade silver, embodies the r[...]
Large porphyry fragment of a building or base.
Fragment of Egyptian porphyry of irregular shape with worked and polished face.
Dimensions: 53 x 34 x 11 cm.
Provenance: Belgian Private Collection
Large fossil plate composed of numerous fossils of eocrinoids of the ascocystites drabowensis type. It is rare to have such a large plate with so many specimens. Some specimens on the back. Silurian p[...]
Incredible raw hematite in very large format. It measures 37cm long by 16cm high and weighs more than 10 kilos! It is very rare to find a geode of this size. Hematite with its black nodules is emblema[...]
Medieval bronze ring with a green patina with the appearance of a 'goat's head' (sometimes interpreted as a 5-pointed star with the 2 flared upper points), a symbol of knowledge that allows the human [...]
Large polished Pallasite meteorite plate, from the famous African site of Sericho in Kenya, 1464
Dimensions 36.2* 17.2* 0.5cm, and 432g weight!
The plate is composed mainly of iron, a lille nick[...]
Proantic uses a cookie to analyze traffic and improve its service by using Google Analytics. Data sent to Google Analytics (frequency of visits to the site and pages visited) are anonymous. No other cookie tracks your activity, your personal data is not collected. Thank you for helping us to have better understanding how Proantic is used.