12 different Mineral rough stone specimens in clear large plastic box

(similar to picture, stock of more than 100 boxes)

Size of each piece is about 25x35x20 mm (about 1.0x1.4x0.8 inch).

Weight of each piece is about 6 to 30 g, total weight with packing box is about 550 g.

Box size: 200 x 135 x 40 mm

This is a handmade specimen craft. Each one will be a bit different (specimen size, color and weight) even in the same production batch.
 

The pictures in the listing are just for reference as we are selling multiple pieces with same pictures.

It is an ideal learning aid for students and kids and also a very good collectible item for every body. 

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Agate

Agate is a common semiprecious silica mineral that has long been used as a gem and ornamental. Agate is the most common variety of chalcedony which is a form of quartz. Agate is, in fact, identical with quartz in composition and physical properties. Composed of silicon dioxide (SiO2), it has a hardness of 7, a glassy luster, a conchoidal fracture, and a specific gravity of 2.60.

Most agates occur in cavities of eruptive rocks or ancient lavas. These agates have a banded structure, successive layers being approximately parallel to the sides of the cavity. During crystallization, the colored bands are not disturbed. Varieties of agate are characterized by peculiarities in the shape and color of the bands, which are seen in sections cut at right angles to the layers.

Agate forms when gas bubbles trapped in solidifying lava become filled with alkali and silica-bearing waters, which coagulate into a gel. The alkali attacks the iron in the surrounding lava, and bands of the resulting iron hydroxide are created in the gel, which loses water and crystallizes, leaving the bands intact. Many agates, when cut in cross-section, reveal striking forms.

Agate is a variety of chalcedony which is a microcrystalline quartz. Agate is a more translucent microcrystalline quartz and technically is striped, though many stones named agates are not striped, whereas jasper is more opaque. There are many, many different types of agates in many different color combinations, and they are found all over the world. Different types are known for different appearances and/or properties.

According to ancient superstition, wearing agate made one agreeable, persuasive, prudent yet bold. It brought God's favor and bestowed the power to vanquish enemies and acquire riches. White agate supposedly cured insomnia.

Chromite

Spinel Group. It apparently forms a complete solid solution series with many other members of the group, eg. in the Chromite-Hercynite Series, Chromite-Spinel Series, Chromite-Magnetite Series and the Chromite-Magnesiochromite Series. It is the iron analogue of Zincochromite, Cochromite, Manganochromite and Magnesiochromite and the Cr analogue of Hercynite, Coulsonite and Magnetite
It usually contains Mg, ferric iron [Fe(III)], Al and often Ti. "Ferrichromite", i.e. Fe(III) substitutions for Al and Cr, usually in grain rims, may give high total Fe contents and a false chromite identification. Of course, the definition requires dominant Fe(II)>Mg and Cr>Fe(III). (e.g. photo ID: 514894).
"Chromite" is commonly used for any Cr-rich mineral of the spinel group, particularly for the chromite-magnesiochromite series, and much of the mineral referred to as "chromite" in geological and petrological papers and mining statistics is usually Magnesiochromite. The Fe-dominant species - Chromite itself - can be FOUND, although uncommonly, in many "chromite" deposits, chromitite (rock name), and other "chromite"-bearing occurrences connected with hyperbasic rocks. As a rule of thumb, a member of the chromite-magnesiochromite series is twice as likely to be a magnesiochromite instead of a chromite. "Chromites" associated with olivine or serpentines, which are Mg-rich rocks, frequently have Mg-rich associated minerals. True chromite is common as inclusions in Diamonds from kimberlites (South Africa and Yakutia). Members of the spinel group may be enriched Cr and V in marbles (Slyudyanka), massive sulphide ores (Outokumpu) and also in some types of meteorites. In any case, "chromite" always needs ANALYTICAL CONFIRMATION. Note: Chromite, that is near end-member, has a higher specific gravity than near end-member magnesiochromite.

Pyrite

Pyrite is commonly called Fools Gold because of its similarity in color, shape, and habit to Gold. In the old mining days, Pyrite was often confused with Gold as they occur together, although Gold and Pyrite can very easily be distinguished by simple observation and testing of characteristics.
Pyrite occurs in all different shapes and forms. The smaller crystal aggregates may give off a beautiful glistening effect in light, and the larger crystals may be perfectly formed, including fascinating perfect cube and penetration twins and other bizarre crystal forms.

Pyrite is a metallic mineral that is composed of iron and sulfur atoms bound together in a ratio of one iron to two sulfur, and it is arguably the most abundant sulfide mineral on Earth.

The mineral is found in many sedimentary rocks, such as limestone, shale and coal, as well as in metamorphic rocks like schist. It is a very common mineral in ore deposits, where it is found along with other metal-containing minerals, including gold. And yet pyrite is not mined for its iron, as the metal is difficult to extract from it.

Pyrite has a brassy yellow color, but it does not look as bright yellow as gold. It also sometimes displays greenish-black streaks. If pyrite is ground into powder, its color appears greenish-black, while powdered gold is still yellow.

Pyrite can also form combinations of these shapes, or lack any visible crystal forms and occur as irregular grains spread out through a rock. Pyrite can also fill in gaps in shale layers to form radiating growths called pyrite suns or pyrite dollars.

Whether in crystal or massive form, pyrite has a metallic luster. However, because the mineral does react chemically in air, it often has a dull or tarnished appearance.

Quartz

Quartz (SiO2) is the most abundant single mineral on earth. It makes up about 12% of the earth's crust, occurring in a wide variety of igneous, metamorphic and sedimentary rocks.

Quartz varieties are commonly separated into two groups based on the size of the individual grains or crystals; macrocrystalline quartz in which individual crystals are distinguishable with the naked eye, and cryptocrystalline quartz in which the individual crystals are too small to be easily distinguishable under the light microscope.

Some of the macrocrystalline quartz varieties are: Amethyst, Ametrine, Cat's-eye Quartz, Citrine, Phantom Quartz , Rock Crystal, Rose Quartz, Rutilated Quartz and Smoky Quartz.
Blue Aventurine Quartz and Green Aventurine Quartz are actually quartzites (a rock, not a mineral) composed essentially of interlocking macrocrystalline quartz grains with disseminated grains of other color imparting minerals.

The cryptocrystalline varieties of quartz may be separated into two types; fibrous and microgranular. Chalcedony is the general term applied to the fibrous cryptocrystalline varieties. Agate is an example of a fibrous cryptocystalline banded chalcedony variety of quartz. Carnelian, Chrysoprase and bloodstone are other chalcedony varieties.
Chert is the general term applied to the granular cryptocrystalline varieties of quartz, of which flint and Jasper are examples.

Rose Quartz

Alternate Names & Name Spellings: "Love Stone"

Metaphysical and Healing Properties Lore

Keywords: Love

Rose quartz is pink quartz that is often called the "Love Stone." It is a stone of unconditional love that opens the heart chakra to all forms of love: self-love, family love, platonic love, and romantic love. The high energy of quartz gives rose quartz the property of enhancing love in virtually any situation. In turn, this lowers stress. All in all it is a very soothing and happy stone.

Emotionally rose quartz brings gentleness, forgiveness, compassion, kindness and tolerance. It raises one's self-esteem and sense of self-worth. It helps balance emotions and heal emotional wounds and traumas, even grief, bringing peace and calm. Rose quartz removes fears, resentments and anger. It can also heal and release childhood traumas, neglect, and lack of love, in part by enhancing inner awareness. It can help with reconciliation with family and others. Overwhelming or unreasonable guilt is eased by rose quartz.

In the psychic and spiritual realms, rose quartz is often used to attract love, and for love spells. It is also used to ease the process of transition in dying. Rose quartz can be helpful for dream recall and dream work.

Physically rose quartz is used in crystal healing to benefit the heart, the circulatory system, fertility, headaches, kidney disease, migraines, sexual dysfunction, sinus problems, throat problems, depression, addictions, ear aches, slowing signs of aging, reducing wrinkles, spleen problems, fibromyalgia, and reaching one's ideal weight / weight loss. Rose quartz is also helpful and protective during pregnancy and with childbirth. It is also sometimes said that rose quartz is helpful for supporting brain functions and increasing intellect.

Rose quartz is associated with the heart chakra.

Specularite

A variety of Hematite
A variety of hematite characterized by aggregates of silvery, metallic, specular hematite flakes or tabular, anhedral crystals.

Sulphur

Sulfur or sulphur (see spelling differences) is a chemical element with symbol S and atomic number 16. It is an abundant, multivalent non-metal. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S8. Elemental sulfur is a bright yellow crystalline solid when at room temperature. Chemically, sulfur can react as either an oxidant or a reducing agent. It oxidizes most metals and several nonmetals, including carbon, which leads to its negative charge in most organosulfur compounds, but it reduces several strong oxidants, such as oxygen and fluorine.

Sulfur occurs naturally as the pure element (native sulfur) and as sulfide and sulfate minerals. Elemental sulfur crystals are commonly sought after by mineral collectors for their distinct, brightly colored polyhedron shapes. Being abundant in native form, sulfur was known in ancient times, mentioned for its uses in ancient India, ancient Greece, China and Egypt. Fumes from burning sulfur were used as fumigants, and sulfur-containing medicinal mixtures were used as balms and antiparasitics. Sulfur is referred to in the Bible as brimstone (burn stone) in English, with this name still used in several nonscientific tomes.[3] It was needed to make the best quality of black gunpowder. In 1777, Antoine Lavoisier helped convince the scientific community that sulfur was a basic element rather than a compound.

Elemental sulfur was once extracted from salt domes where it sometimes occurs in nearly pure form, but this method has been obsolete since the late 20th century. Today, almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum. The element's largest commercial use (after mostly being converted to sulfuric acid) is to produce sulfate and phosphate fertilizers, because of the relatively high requirement of plants for sulfur and phosphorus. Sulfuric acid is also a primary industrial chemical outside fertilizer manufacture. Other well-known uses for the element are in matches, insecticides and fungicides. Many sulfur compounds are odoriferous, and the smell of odorized natural gas, skunk scent, grapefruit, and garlic is due to sulfur compounds. Hydrogen sulfide produced by living organisms imparts the characteristic odor to rotting eggs and other biological processes.

Talc

Talc is a mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2. In loose form, it is the widely used substance known as talcum powder. It occurs as foliated to fibrous masses, and in an exceptionally rare crystal form. It has a perfect basal cleavage, and the folia are non-elastic, although slightly flexible. It is the softest known mineral and listed as 1 on the Mohs hardness scale as such, it can be easily scratched by a fingernail. It is also sectile (can be cut with a knife). It has a specific gravity of 2.5–2.8, a clear or dusty luster, and is translucent to opaque. Talc is not soluble in water, but it is slightly soluble in dilute mineral acids. Its colour ranges from white to grey or green and it has a distinctly greasy feel. Its streak is white.

Talc is a metamorphic mineral resulting from the metamorphism of magnesian minerals such as serpentine, pyroxene, amphibole, olivine, in the presence of carbon dioxide and water. This is known as talc carbonation or steatization and produces a suite of rocks known as talc carbonates.

Talc is a tri-octahedral layered mineral; its structure is similar to that of pyrophyllite, but with magnesium in the octahedral sites of the composite layers.

Talc is a common metamorphic mineral in metamorphic belts which contain ultramafic rocks, such as soapstone (a high-talc rock), and within whiteschist and blueschist metamorphic terranes. Prime examples of whiteschists include the Franciscan Metamorphic Belt of the western United States, the western European Alps especially in Italy, certain areas of the Musgrave Block, and some collisional orogens such as the Himalayas which stretches along Pakistan, India, Nepal and Bhutan.