Crystals & Minerals

This is a natural cluster formation of calcite on calcite crystals or two variations of the mineral found in a cracked concretion in a coal mine in Oskaloosa, Mahaska County, Iowa, USA.

It is a specimen consisting of two types of calcite on matrix. The first type is a coating of iridescent, dark calcite on the matrix. The second type are white crystals of calcite.   It is in good condition.  Would be a nice addition to any new or existing collection.

Name: Calcite on Calcite Crystal Cluster
Specimen Size:  Cabinet-Sized
Dimensions:  65x47x32 mm / 2.6x1.8x1.3 inches
Weight: 64 Grams / 2.2 oz 
Origin: Mined in Oskaloosa, Mahaska County, Iowa, USA

Smithsonite can occur in a variety of colors, including white, grey, blue, green, pink, brown, and yellow. Its coloration is often influenced by impurities present during its formation. The crystals can be transparent to translucent, with a vitreous to pearly luster.  It commonly occurs as botryoidal (rounded, globular masses resembling a bunch of grapes) or reniform (kidney-shaped) aggregates. It can also form crusts, stalactites, and stalagmites.  Significant deposits of smithsonite have been found in various countries, including the United States, Mexico, Australia, Namibia, Greece, and China.

Name:  Smithsonite
Specimen Size: Thumbnail
Dimensions:   Specimen 28x20 mm / 1.1x0.8 inches  
                        Specimen Box 33x33x35 mm / 1.3x1.3x1.4 inches  
Weight:  19.8 Grams / 0.7 Ounces (including box)  
Origin: Mined in San Antonio Mine, Santa Eulalia, Chihuahua, Mexico

An olivine volcanic bomb is a type of volcanic rock that contains olivine crystals and has been ejected during a volcanic eruption. Olivine is a mineral that is commonly found in the Earth's mantle and is one of the first minerals to crystallize as magma cools.

Volcanic bombs are large clots of lava that are ejected from a volcano during an explosive eruption. They can vary in size, and their shapes are often streamlined due to their molten nature as they are thrown through the air. When these volcanic bombs contain olivine crystals, they are referred to as olivine volcanic bombs.

This beautiful slice is completely surrounded by a lava crust and has been polished on both sides. 

Would be a beautiful addition to any new or existing collection. Comes with a Canagem Collection specimen card.

Name: Olivine Volcanic Bomb Slice  
Specimen Size:  Cabinet-Sized  
Dimensions: 89x64x15 mm / 3.5x2.5x0.6 Inches  
Weight:  174.3 Grams / 6.1 Ounces  
Details: Volcanic activity Mortlake, Victoria, Australia  

This is a 4.25 carat, 8 piece lot of beautiful little Herkimer diamonds.  They measure 4.7-7.5 mm in length and each of them have multiple terminated points. 

Herkimer Diamonds are beautiful double-terminated quartz crystals which are found mainly in Herkimer County, New York. Incredibly, these phenomenal gemstones are believed to be close to five hundred million years old. The crystals are magnificent works of nature found in the rock, appearing to have been precision cut by man and having a diamond-like geometrical shape; thus, the name Herkimer Diamond.  Many collectors believe the Herkimer Diamond should rival a true diamond and their reasoning for this is that a true diamond found in the rough is exactly that, a rough appearing glass-like stone. The diamond must be painstakingly cut by man to give it smooth faces and a geometrical shape.

In fact, Herkimer Diamonds are not diamonds.  A true diamond is one of the hardest elements known to man, scoring a ten on a one to ten hardness scale.  Herkimer Diamonds are harder than all quartz crystals. They fall at about 7.5 on the Mohs hardness scale, giving the real diamond a close race.  For comparison, many man-made steels barely score a seven on the hardness scale.

This stone is said to energize, enliven, and promote creativity.  The smaller, exceptionally clear stones are said to be powerful attunement crystals, stimulating psychic abilities, such as clairvoyance, spiritual vision, and telepathy.  It is also said that Herkimer attunes people and links them together when they have to be parted if each person has a stone

This is a specimen of Star Mica or Muscovite and Quartz cluster.  These clusters show crystals that grow in sheets or book formations.  It is silvery gold with good transparency when held up to the light.  The name Muscovite comes from the term Muscovy Glass which was a name for the thick sheets of Mica used as a substitute for glass Russia. The name Mica is derived from the Greek word that means to split.

On this nice specimen, the matrix faces are covered with beautiful golden yellow point stars of muscovite mica, a typical shape for this rare mica formation. The stars are the result of twinning; the points show a bit of wear but this does not detract from the beauty of such a piece.

Name: Star Mica - Muscovite with Quartz  
Specimen Size:  Miniature-Sized  
Dimensions:  47x43x25 mm / 1.8x1.7x1.0 inches  
Weight:  48 Grams / 1.7 ounces  
Origin: Mined in Minas Gerais, Brazil 

An olivine volcanic bomb is a type of volcanic rock that contains olivine crystals and has been ejected during a volcanic eruption. Olivine is a mineral that is commonly found in the Earth's mantle and is one of the first minerals to crystallize as magma cools.

Volcanic bombs are large clots of lava that are ejected from a volcano during an explosive eruption. They can vary in size, and their shapes are often streamlined due to their molten nature as they are thrown through the air. When these volcanic bombs contain olivine crystals, they are referred to as olivine volcanic bombs.

The crystal face has been left raw on this piece to show the red and green olivine crystals which are showcased beautifully against the surrounding black lava crust. 

Would be a beautiful addition to any new or existing collection. Comes with a Canagem Collection specimen card.

Name: Red Olivine Crystal Bomb
Specimen Size:  Cabinet-Sized
Dimensions: 98x64x55 mm / 3.8x2.5x2.2 Inches 
Weight: 452 Grams / 15.9 Ounces
Details: Volcanic activity Mortlake, Victoria, Australia

Malachite is perhaps the one of the most popular minerals for collectors due to its intense green color and sometimes beautiful banded masses. Africa contains several outstanding Malachite deposits. The mines at Katanga (Shaba), especially at Kolwezi, in the Congo (Zaire) produce Malachite in all sorts of odd shapes and forms, and are the source of the best banded, concentric, stalactitic and sparkling specimens. Would be a beautiful addition to any new or existing collection.

P.S. The white shiny spots are actually light reflections and are not signs of damages.

Name: Malachite
Specimen Size:  Miniature-Sized
Dimensions:   Specimen 15x8 mm / 0.6x0.3 inches  
                        Specimen Box 28x28 mm / 1.1x1.1 inches 
Weight: 5.4 Grams / 0.2 Ounces (incl box)
Origin: Mined at Katanga, Shaba Copper Belt, Congo/Zaire

An olivine volcanic bomb is a type of volcanic rock that contains olivine crystals and has been ejected during a volcanic eruption. Olivine is a mineral that is commonly found in the Earth's mantle and is one of the first minerals to crystallize as magma cools.

Volcanic bombs are large clots of lava that are ejected from a volcano during an explosive eruption. They can vary in size, and their shapes are often streamlined due to their molten nature as they are thrown through the air. When these volcanic bombs contain olivine crystals, they are referred to as olivine volcanic bombs.

This beautiful piece is completely surrounded by a lava crust.  Would be a beautiful addition to any new or existing collection. Comes with a Canagem Collection specimen card.

Name: Olivine Volcanic Bomb 
Specimen Size:  Cabinet-Sized  
Dimensions: 73x69x34 mm / 2.9x2.7x1.3 Inches  
Weight:  140 Grams / 4.9 Ounces  
Details: Volcanic activity Mortlake, Victoria, Australia  

An olivine volcanic bomb is a type of volcanic rock that contains olivine crystals and has been ejected during a volcanic eruption. Olivine is a mineral that is commonly found in the Earth's mantle and is one of the first minerals to crystallize as magma cools.

Volcanic bombs are large clots of lava that are ejected from a volcano during an explosive eruption. They can vary in size, and their shapes are often streamlined due to their molten nature as they are thrown through the air. When these volcanic bombs contain olivine crystals, they are referred to as olivine volcanic bombs.

This beautiful piece is completely surrounded by a lava crust.  Would be a beautiful addition to any new or existing collection. Comes with a Canagem Collection specimen card.

Name: Olivine Volcanic Bomb 
Specimen Size:  Cabinet-Sized  
Dimensions: 88x56x33 mm / 3.5x2.2x1.3 Inches  
Weight:  194.3 Grams / 6.8 Ounces  
Details: Volcanic activity Mortlake, Victoria, Australia  

Herkimer Diamonds are beautiful double-terminated quartz crystals which are found mainly in Herkimer County, New York. Incredibly, these phenomenal gemstones are believed to be close to five hundred million years old. The crystals are magnificent works of nature found in the rock, appearing to have been precision cut by man and having a diamond-like geometrical shape; thus, the name Herkimer Diamond.  Many collectors believe the Herkimer Diamond should rival a true diamond and their reasoning for this is that a true diamond found in the rough is exactly that, a rough appearing glass-like stone. The diamond must be painstakingly cut by man to give it smooth faces and a geometrical shape.

In fact, Herkimer Diamonds are not diamonds.  A true diamond is one of the hardest elements known to man, scoring a ten on a one to ten hardness scale.  Herkimer Diamonds are harder than all quartz crystals. They fall at about 7.5 on the Mohs hardness scale, giving the real diamond a close race.  For comparison, many man-made steels barely score a seven on the hardness scale.

This stone is said to energize, enliven, and promote creativity.  The smaller, exceptionally clear stones are said to be powerful attunement crystals, stimulating psychic abilities, such as clairvoyance, spiritual vision, and telepathy.  It is also said that Herkimer attunes people and links them together when they have to be parted if each person has a stone.

The dimensions and weight of the lots are as follows:

A:  4 pce lot 7.4 - 9.0 mm | 5.0 tcw
B:  5 pce lot 7.3 - 8.0 mm | 5.5 tcw

An olivine volcanic bomb is a type of volcanic rock that contains olivine crystals and has been ejected during a volcanic eruption. Olivine is a mineral that is commonly found in the Earth's mantle and is one of the first minerals to crystallize as magma cools.

Volcanic bombs are large clots of lava that are ejected from a volcano during an explosive eruption. They can vary in size, and their shapes are often streamlined due to their molten nature as they are thrown through the air. When these volcanic bombs contain olivine crystals, they are referred to as olivine volcanic bombs.

This beautiful slice is completely surrounded by a lava crust and has been polished on both sides. 

Would be a beautiful addition to any new or existing collection. Comes with a Canagem Collection specimen card.

Name: Olivine Volcanic Bomb
Specimen Size:  Cabinet-Sized  
Dimensions: 89x39x30 mm / 3.5x1.5x1.2 Inches  
Weight:  150 Grams / 5.3 Ounces  
Details: Volcanic activity Mortlake, Victoria, Australia  

Quartz crystals are among the most abundant and well-known minerals on Earth. It belongs to the hexagonal crystal system, and typically forms six-sided prismatic crystals with a pointed termination. Its crystals can be colorless or exhibit a wide range of colors. The color variations are often due to the presence of impurities or trace elements during the crystal's formation. Quartz is transparent to translucent. 

This is a very nice specimen of clear quartz crystals form Fisher Mountain, near Mount Ida. This beautiful crystal has excellent clarity, and the tip is in perfect condition.

Name: Quartz
Specimen Size:  Miniature-Sized
Dimensions: 40x18x15 mm / 1.6x0.7x0.6 inches
Weight: 11.14 Grams / .04 Ounces 
Origin:  Fisher Mountain, near Mount Ida, Arkansas, USA