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This Collection contains 20 Types of Basic Stones.The Stones include Some of the following Bauxite, Boron, Calcite, Chalcopyrite, Dolomite, Feldspar, Gabbro, Granite, Graphite, Gypsum, Hematite, Lime Stone, Magnetite, Marble, Pegmatite, Pumice, Quartz, Slate, Soap Stone & Sulphur etc.

The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. This Collection contains 9 Minerals represents the scale of Hardness Talc (H=1), Gypsum (H=2), Calcite (H=3), Fluorite (H=4), Apatite (H=5), Orthoclase (H=6), Quartz (H=7), Topaz (H=8) & Corundum (H=9)

Fracture represents a mineral break other than along a cleavage or parting plane. Breaks may occur in any direction but are usually around some imperfection in the mineral. This collection contains 10 Minerals having Property of Even, Uneven, Conchoidal, Subconchoidal, Splintery & Hackly fracture.

Cleavage is the tendency of minerals to break along preferred directions. Some minerals tend to have one direction of cleavage. This collection contains 10 Minerals having Property of Basal, Cubic, Octahedral, Sinusoidal, Rhombohedral & Prismatic cleavage.

The streak is the color of the mineral in powdered form.Streak shows the true color of the mineral.In large solid form, trace minerals can change the color appearance of a mineral by reflecting the light in a certain way. This collection contains 10 Minerals having Property of Light Blue, White, Colour Less, Brown Grey, Black, Yellow Grey, Reddish, Brown, Greenish Black & Brown Gold Streak.

Luster is the property of minerals that indicates how much the surface of a mineral reflects light. The luster of a mineral is affected by the brilliance of the light used to observe the mineral surface. This collection contains 10 Minerals having Property of Metallic, Adamantine, Viteous, Resinous, Greasy, Pearly, Shining, Sub metallic, Dull & Metallic Luster.

Tenacity is the characteristic that describes how the particles of a mineral hold together or resist separation. The chart below gives the list of terms used to describe tenacity and a description of each term. This collection contains 10 Minerals having Property of Brittleness, Sectile, Malleability, Flexibility, Elastic, Softness, Tensile & Fragility Tenacity.

Specific Gravity of a mineral is a comparison or ratio of the weight of the mineral to the weight of an equal amount of water.

Colour is the first thing someone notices when they view a mineral. Color is also one of the big reasons that attract people to minerals.

The Feel of a mineral can sometimes help identify it.Some minerals are greasy to the touch, others are smooth, and others have a rough feel.This Collection contains 10 Minerals having Thin, Greasy, Fiberous, Heavy, Smooth, Greasy, Rough, Oily, Sandy & Grained Feel Property.