10 different color stone specimens in clear plastic box (SMS-10CS)

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

Size of each piece is about 23x17x15 mm (about 0.9x0.7x0.6 inch).

Weight of each piece is about 6 to 13 g, total weight with packing box is about 140 g.

Box size: 132 x 69 x 24 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 picture in the listing is just for reference as we are selling multiple pieces with same picture.

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

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Tiger’s Eye Stone

Chemical formula Silica (silicon dioxide, SiO2)

Color golden to red-brown

Mohs scale hardness 7.0

Luster Silky

Specific gravity 2.64 – 2.71

Tiger's eye (also called Tigers eye or Tiger eye) is a chatoyant gemstone that is usually a metamorphic rock that is a golden to red-brown color, with a silky luster. A member of the quartz group, it is a classic example of pseudomorphous replacement by silica of fibrous crocidolite (blue asbestos). An incompletely silicified blue variant is called Hawk's eye.

The gems are usually cut en cabochon in order to best display their chatoyancy. Red stones are brought about through gentle heat treatment. Dark stones have had their colors improved and been artificially lightened using nitric acid treatments.

Honey-colored stones have been used to imitate the much higher valued cat's eye chrysoberyl (cymophane), but the overall effect is unconvincing. Artificial fiberoptic glass is a common imitation of tiger's eye, and is produced in a wide range of colors. Tiger's Eye mostly comes from South Africa and East Asia.

Tiger Eye lets you see everything. Use it for insight and you can be a very lucky person. When used in jewelry the tiger eye may bring good luck and protection from the evil eye to the wearer. It also known to bring clear thinking and insight.

Tiger's-eye or Cat's-Eye is a stone for the mind, not the body. Tiger Eye is used to focus the mind. It will cause the mind to have feeling of oneness and feel more direct in all thoughts. It makes one aware of one's own needs related to the needs of others.

A personal symbol carved in Tiger eye is excellent for the spiritually advanced to use in meditation.

Obsidian

Category  Volcanic glass

Chemical formula  70–75% SiO2, plus MgO, Fe3O4

Color  Black

Fracture  Conchoidal

Mohs scale hardness  5–6

Luster  Vitreous

Specific gravity  ~2.4

Optical properties  Translucent

Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.

It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition (high silica content) induces a high viscosity and polymerization degree of the lava. The inhibition of atomic diffusion through this highly viscous and polymerized lava explains the lack of crystal growth. Obsidian is hard and brittle; it therefore fractures with very sharp edges, which had been used in the past in cutting and piercing tools, and are still used as surgical scalpel blades.

Obsidian is the rock formed as a result of cooled magma, which is the parent material. Having a low water content when newly formed typically less than 1% water by weight, becomes progressively hydrated when exposed to groundwater, forming perlite. Tektites were once thought by many to be obsidian produced by lunar volcanic eruptions, though few scientists now adhere to this hypothesis.

Obsidian is mineral-like, but not a true mineral because as a glass it is not crystalline; in addition, its composition is too complex to comprise a single mineral. It is sometimes classified as a mineraloid. Though obsidian is usually dark in color similar to mafic rocks such as basalt, obsidian's composition is extremely felsic. Obsidian consists mainly of SiO2 (silicon dioxide), usually 70% or more. Crystalline rocks with obsidian's composition include granite and rhyolite. Because obsidian is metastable at the Earth's surface (over time the glass becomes fine-grained mineral crystals), no obsidian has been found that is older than Cretaceous age. This breakdown of obsidian is accelerated by the presence of water.

Pure obsidian is usually dark in appearance, though the color varies depending on the presence of impurities. Iron and magnesium typically give the obsidian a dark brown to black color. Very few samples are nearly colorless. In some stones, the inclusion of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern (snowflake obsidian). It may contain patterns of gas bubbles remaining from the lava flow, aligned along layers created as the molten rock was flowing before being cooled. These bubbles can produce interesting effects such as a golden sheen (sheen obsidian) or an iridescent, rainbow-like sheen (rainbow obsidian).

Obsidian can be found in locations which have experienced rhyolitic eruptions.

Jasper

Jasper is a stone of gentleness and relaxation. It is professed to enhance one's ability to relax and bring tranquility, comforting, wholeness, healing, and gentle endings. As with all jaspers, it is also a good protection stone. In mystical healing lore, jasper is said to be good for the liver, gallbladder, and soothing to the stomach. Fancy Jasper is reputed to be particularly good at bringing energies of wholeness and healing to an environment or situation.

Amethyst
Amethyst is purple quartz, and is a meditative and calming stone. It works in the emotional, spiritual, and physical planes to provide calm, balance, patience, and peace. Amethyst is also beneficial when dealing with legal problems and money issues, which can lead to prosperity and abundance.

Amethyst has long been called the "sobriety stone." In ancient Rome, crushed amethyst was added to wine cups to prevent drunkenness. It is said to assist with healing alcoholism, compulsive behaviors, and addictions of all kinds. Amethyst brings energies in mystical realms of stability, peace, calm, balance, courage and inner strength. It is often used in metaphysics and crystal healing to protect against psychic attacks. On the spiritual level, amethyst is said to help open to communication with angels, telepathy and other psychic abilities. It is thus an excellent stone for meditation or dream work, past life work, and to help you see your path. It has also been used to help ease the pain of grief, and promote happiness. Amethyst is reputed to be beneficial when dealing with legal problems, and money issues, which can lead to prosperity and abundance. Amethyst is also used as protection for travelers. Physically amethyst is said by spiritual healers and mystical lore to heal the withdrawal symptoms of any sort of addiction, help with headaches, insomnia, arthritis, pain relief, circulatory system issues, endocrine system problems, diabetes, chronic fatigue, fibromyalgia, immune system deficiencies, asthma, phobias, pregnancy and preventing miscarriage, menopause, PMS, and general healing. Amethyst is associated with the brow and the crown chakras.

Hematite

Chemical formula iron(III) oxide, Fe2O3, α-Fe2O3

Strunz classification 04.CB.05

Crystal symmetry Trigonal hexagonal scalenohedral
H-M symbol: (32/m)
Space group: R3c

Color: Metallic gray, dull to bright red

Crystal habit Tabular to thick crystals; micaceous or platy, commonly in rosettes; radiating fibrous, reniform, botryoidal or stalactitic masses, columnar; earthy, granular, oolitic

Crystal system Trigonal Twinning Penetration and lamellar

Cleavage None

Fracture Uneven to sub-conchoidal Tenacity Brittle

Mohs scale hardness 5.5–6.5

Luster Metallic to splendent

Streak Bright red to dark red

Diaphaneity Opaque

Specific gravity 5.26 Optical properties Uniaxial (-)

Refractive index nω = 3.150–3.220, nε = 2.870–2.940

Birefringence δ = 0.280

Pleochroism O = brownish red; E = yellowish red

Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides. Hematite crystallizes in the rhombohedral system, and it has the same crystal structure as ilmenite and corundum. Hematite and ilmenite form a complete solid solution at temperatures above 950 °C.

Hematite is a mineral, colored black to steel or silver-gray, brown to reddish brown, or red. It is mined as the main ore of iron. Varieties include kidney ore, martite (pseudomorphs after magnetite), iron rose and specularite (specular hematite). While the forms of hematite vary, they all have a rust-red streak. Hematite is harder than pure iron, but much more brittle. Maghemite is a hematite- and magnetite-related oxide mineral.

Huge deposits of hematite are found in banded iron formations. Grey hematite is typically found in places where there has been standing water or mineral hot springs, such as those in Yellowstone National Park in the United States. The mineral can precipitate out of water and collect in layers at the bottom of a lake, spring, or other standing water. Hematite can also occur without water, however, usually as the result of volcanic activity.

Clay-sized hematite crystals can also occur as a secondary mineral formed by weathering processes in soil, and along with other iron oxides or oxyhydroxides such as goethite, is responsible for the red color of many tropical, ancient, or otherwise highly weathered soils.

Blue Quartz

Blue quartz contains a crystalline structure and can appear as having a smooth or coarse texture.

Geologists have found blue quartz primarily in Brazil and Spain. Specimens of blue quartz exist in streams, beaches and metamorphic and igneous rocks.

Blue  quartz is simply macrocrystalline quartz that is blue. The term is used for - at least - three different types of quartz:

quartz crystals that appear blue due to the so called Rayleigh scattering effect caused by tiny inclusions

crystalline quartz that is blue due to more or less evenly distributed inclusions of blue minerals, like magnesio-riebeckite or tourmaline

a coarse grained, massive, macrocrystalline form of blue quartz not unlike aventurine quartz that is also colored by embedded blue minerals, like dumortierite.

So far no quartz that is blue because of color centers, similar to those found in amethyst or smoky quartz, has been found in nature. Amethyst from certain mines in Brazil will partially or completely turn blue on special treatment.

The color can vary from gray to deep blue. Natural blue quartz is always colored by inclusions of other minerals, not by trace elements or color centers, so it is never transparent, just translucent.

This depends on the type of inclusion: Quartz that includes riebeckite occurs in metamorphic rocks, while inclusions of blue turmaline have been found in crystals from igneous rocks and pegmatites.

Grains of blue quartz are occasionally found as a constituent of igneous rocks.

Howlite

Howlite, a calcium borosilicate hydroxide (Ca2B5SiO9(OH)5), is a borate mineral found in evaporite deposits.

The most common form of howlite is irregular nodules, sometimes resembling cauliflower. Crystals of howlite are rare, having been found in only a couple localities worldwide. Crystals reach a maximum size of about 1 cm. The nodules are white with fine grey or black veins in an erratic, often web-like pattern, opaque with a sub-vitreous lustre. The crystals at Iona are colorless, white or brown and are often translucent or transparent.

Its structure is monoclinic with a Mohs hardness of 3.5 and lacks regular cleavage. Crystals are prismatic and flattened.

Howlite is commonly used to make decorative objects such as small carvings or jewelry components. Because of its porous texture, howlite can be easily dyed to imitate other minerals, especially turquoise because of the superficial similarity of the veining patterns. The dyed howlite (or magnesite) is marketed as turquenite. Howlite is also sold in its natural state, sometimes under the misleading trade names of "white turquoise" or "white buffalo turquoise," or the derived name "white buffalo stone."

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. The perfect cubes of Pyrite embedded in a matrix from the famous Spanish mines are especially treasured among collectors. Many of these specimens have fallen out of the matrix and have been repaired by having them glued back into the matrix.
Pyrite has the same chemical formula as the rarer mineral Marcasite, but it crystallizes in a different crystal system, thereby scientifically classifying it as a separate mineral species. Aggregates of iron sulfide (FeS2) where the crystal structure cannot be determined without complex analyzing material may be wrongly labeled by dealers. Some Pyrite specimens are labeled as Marcasite, and some Marcasite specimens as Pyrite.

Category: Sulfide mineral

Chemical formula: iron disulfide (FeS2)

Color: Pale brass-yellow, tarnishes darker and iridescent

Crystal habit: Cubic, faces may be striated, but also frequently octahedral and pyritohedron. Often inter-grown, massive, radiated, granular, globular and stalactitic.

Crystal system: Isometric Twinning Penetration and contact twinning

Fracture: Very uneven, sometimes conchoidal Tenacity Brittle

Mohs scale: hardness 6–6.5

Luster: Metallic, glistening

Streak: Greenish-black to brownish-black; smells of sulfur

Diaphaneity: Opaque

Quartz Crystal

Chemical Composition: SiO2
Hardness (Mohs): 7
Color(s): Clear, White, Pink, Brown, Gray, Black, Green, Blue, Orange, Purple (Amethyst), Yellow (Citrine)
Lustre: Vitreous
Transparency: Transparent, Translucent
Habit: widely variable, trigonal-trapezohedral, crystals often columnar
Common Locations: Found all over the world, most notably Brazil and Arkansas, USA.

Rock Lore & Tidbits: Quartz is the most common mineral on the planet. It is a component of a huge variety of rock types, and comes in an extensive range of colors and varieties. Chalcedony is a crypto-crystalline variety of quartz and includes the agate and jasper families. Many colors of quartz or formations have their own names, such as amethyst for purple quartz. The word quartz is thought to come from the German word "quarz", but the origin of that word is not known. The word crystal, however, comes from the Greek word "krystallos" which means ice. Ancient Japanese believed quartz formed from the breath of a white dragon, and regarded it as representing perfection. Australian Aborigines used quartz in rain rituals. Crystals skulls were reportedly made by Atlanteans and are believed by some to be living entities. Clear quartz formed into spheres have been used as crystal balls to predict the future at least since the middle ages.

Quartz is a power stone. It has been called the "Universal Crystal", and is the most recognized type of crystal. It's what many people envision when they think of crystals, even though there are many types of crystals. Quartz can be icy clear or have inclusions, veils, bubbles, etc. Visual clarity normally isn't important to a quartz crystal's energetic quality and ability to amplify subtle energies.

Aventurine

Aventurine is a form of quartz, characterised by its translucency and the presence of platy mineral inclusions that give a shimmering or glistening effect termed aventurescence.

The most common colour of aventurine is green, but it may also be orange, brown, yellow, blue, or gray. Chrome-bearing fuchsite (a variety of muscovite mica) is the classic inclusion, and gives a silvery green or blue sheen. Oranges and browns are attributed to hematite or goethite. Because aventurine is a rock, its physical properties vary: its specific gravity may lie between 2.64-2.69 and its hardness is somewhat lower than single-crystal quartz at around 6.5.

Aventurine feldspar or sunstone can be confused with orange and red aventurine quartzite, although the former is generally of a higher transparency. Aventurine is often banded and an overabundance of fuchsite may render it opaque, in which case it may be mistaken for malachite at first glance.

The name aventurine derives from the Italian "a ventura" meaning "by chance". This is an allusion to the lucky discovery of aventurine glass or goldstone at some point in the 18th century. Although it was known first, goldstone is now a common imitation of aventurine and sunstone. Goldstone is distinguished visually from the latter two minerals by its coarse flecks of copper, dispersed within the glass in an unnaturally uniform manner. It is usually a golden brown, but may also be found in blue or green.

The majority of green and blue-green aventurine originates in India (particularly in the vicinity of Mysore and Chennai) where it is employed by prolific artisans. Creamy white, gray and orange material is found in Chile, Spain and Russia. Most material is carved into beads and figurines with only the finer examples fashioned into cabochons, later being set into jewellery.