Secrets of Color in Gemstone Science

* * Secret of Color: The Genesis of Gemstone Science and Mineralogy * *

The spectacular colors in mineral crystals are not only a matter of aesthetics, but chemical fingerprints and structures that indicate their origin in mineralogy. White light, which consists of a spectrum of seven colors. When a mineral crystal is affected, some of the energy is absorbed by electrons in the orbit of the element (Selective Absorption). The remaining light waves, which are not absorbed, are transmitted or reflected back into the colors that our eyes see. These color mechanisms can be categorized scientifically as follows:

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♪ # # * 1.Self Colored Gems (Idiochromatic Gems) * *

This group of colors is caused by a "core element" identified in a chemical formula, often a trans metal group element with an electron in the d-shell shell, which causes an electron jump when light energy is obtained.

* * Important characteristics: * * Color is stable and unique.

* * * Peridot (Peridot): * * $Mg, Fe) _ 2SiO _ 4 $Yellowish Green from Iron

* * * Malachite (Malachite): * * $Cu _ 2CO _ 3 (OH) _ 2 $Dark Green from Elemental Copper

* * * Rhodonite (Rhodonite): * * $MnSiO _ 3 $Pink to Rose Red from Manganese Elements

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♪ # # * 2.Colored Gems (Allochromatic Gems) * *

This group is highly diverse, caused by an "elemental defile" that replaces its position in the crystal lattice.

* * Important characteristics: * * In pure conditions, it is usually clear, colorless, but when defiled, the color changes according to the type and oxidation state.

* * * Corundum Family (Corundum Group): * * * $Al _ 2O _ 3 $- Can Be Colorless Sapphire or Red Ruby

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# # # * 3.Color Centers & Structural Defects (Color Centers & Structural Defects) * *

The colors in this group are caused by "defects" at the atomic level, triggered by natural radiation.

* * Mechanism: * * When high-energy radiation crystallizes, it knocks the electron out of position, forming an F-center.

* * * Amethyst (Amethyst): * * Purple from incoming iron is defiled.

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♪ # # * 4.Optical Phenomena (Optical Phenomena / Pseudochromatism) * *

Color caused by the interaction between light waves and the structure inside the ore.

* * * Opal (Opal): * * Create a rainbow color from the arrangement of silica spheres.

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# # # * * Conclusion for in-depth review * *

Understanding the origin of color fully helps to establish the accuracy of monitoring gems, using a spectroscope machine to see light absorption patterns.

Store pawn collection by Bunchong Tientong 10 Mar 2026

# Gemstone science # Mineralogy # Colorful # Science # Jewel