Home > Calcite >

Optical Calcite Rhomb 2 Inch 4-7 Ounce

Additional Photos

Sale Price: $5.95


Mineral Description
healing crystals

These beautiful Calcite Rhombs are mined in the desert region of Santa Eulalia, Chihuahua, Mexico. Yes, they come out of the ground shaped like a rhombohedron! Calcite rhombs also have what is called "double refraction". If you place one over, for example, written or typed text you see double characters!

These are the highest grade optical calcite's available. Also, while I do not guarantee every piece will have it, most of them display rainbow effects in the sunlight and some have stair step crystallization pattern in the crystal.

You will receive one specimen that is 2 inch to 2 1/2 inch and weighing 4 to 7 ounces.

Bulk Purchase Specimen
You are buying one rock. You will receive one rock like the ones in the photographs, not the exact rocks shown. Photographing and listing every crystal separately adds a lot in labor costs. We pass that savings on to you with lower prices and higher quality than the competition.

Calcite Rhomb, also called Iceland spar, is a transparent variety of calcite, or crystallized calcium carbonate, originally brought from Iceland, and used in demonstrating the polarization of light. It occurs in large readily cleavable crystals, easily divisible into rhombs, and is remarkable for its double refraction or in other causes objects viewed through a clear piece of calcite to appear doubled.

Historically, the phenomena of this crystal were studied at length by Isaac Newton. It has been speculated that the Viking sunstone mentioned in medieval Icelandic texts was Iceland spar and that Vikings used its light-polarizing property to tell the direction of the sun on cloudy days, for navigational purposes.

Optical calcite increases and amplifies energy. This makes it an excellent stone for distance healing, as well as other types of healing. One of the energies it amplifies is learning abilities, and thus is a great stone for students.

Optical calcite works to clear and activate all of the chakras, improving the flow of energy throughout the subtle bodies. Meditation with optical calcite can help to improve one's perception of the physical world and of the self, creating a shift in those who experience predominantly negative emotions. Use optical calcite to clear away negative energy, and to amplify positive energy, and specifically, to help remove fear-based emotions, bringing more optimism into one's experience.

Calcite is also known as the "stone of the mind." Calcite heightens mental discernment and analysis, increases memory and learning abilities. Calcite is THE stone for students and academics, and can be indispensable at helping students to retain their lessons. Calcite is also useful during times of mental adjustments and disagreements. Calcite can show you a new way to look at a situation, easing you away from old, outdated thought patterns that may be in the way of new ideas.

Color: Extremely variable but generally white or colorless or with light shades of yellow, orange, blue, pink, red, brown, green, black and gray. Occasionally iridescent.

Luster: Vitreous to resinous to dull in massive forms

Transparency: Transparent to translucent

Crystal System: Trigonal; bar 3 2/m

Crystal Habits: Extremely variable with almost any trigonal form possible. Common among calcite crystals are the scalenohedron, rhombohedron, hexagonal prism, and pinacoid. Combinations of these and over three hundred other forms can make a multitude of crystal shapes, but always trigonal or pseudo-hexagonal.

Cleavage: Perfect in three directions, forming rhombohedrons

Fracture: Conchoidal

Hardness: 3

Specific Gravity: 2.7

Streak: White

Associated Minerals: Fluorite, quartz, barite, sphalerite, galena, celestite, sulfur, gold, copper, emerald, apatite, biotite, zeolites, several metal sulfides, other carbonates and borates and many other minerals.

Best Field Indicators: Crystal habit, reaction to acid, abundance, hardness, double refraction and especially cleavage.

Share your knowledge of this product with other customers... CLICK HERE to write a review.

Browse for more products in the same category as this item:

Calcite > Optical Calcite
Bulk 1" to 2" Specimens