Solar Quartz: Knowing its properties and mineralogy

♪ # # * * Solar Quartz: Mineralogical, Birth Process, and Facts in the Gemstone Industry * *

* * Solar Quartz * * * It is a trade name for the Stalactitic Quartz, which, when cross-cutting and polishing, sees a pattern on the core with crystals spreading radius outward, similar to the radius of the sun, so it is called Solar. The recording of geological history in one piece is what makes this mineral so interesting.

# # # # * * Chemical composition and mineralogical structure * *

Solar quartz is classified as a silica mineral with a chemical formula, silicon dioxide ($SiO _ 2 $). It has two crystal structures:

* * * Core: * * Contains Cryptocrystalline Quartz minerals such as Chalcedony or Agate that serve as the starting core.

* * * Outer Radial Zone: * * * There are clear crystal-shaped visible quartz crystals (Macrocrystalline Quartz) that grow and radiate away from the core.

♪ # # # * * Physical and optical properties * *

* * * Hardness: * * 7 (Mohs scale)

* * * Specific Gravity: * * 2.65

* * * Refractive Index: * * 1.544 - 1.553

* * * Fracture: * * Conchoidal

* * * Transparency: * * Available from transparent to opaque

♪ # # # * * Geologic birth process * *

The formation of a quartz solar must rely on a specific environment, occurring in a rock cavity (Vugs or Geodes) in an igneous rock such as basalt, which is divided into two main stages:

1. * * Stalactitic Growth Phase

2. * * Radial Crystallization Phase * *

♪ # # * * defile in nature and mineral deposits * *

There are defilements that create colors and patterns, such as:

* * * Chlorite Mineral Group (Chlorite): * * Green

* * * Iron Oxides Compound (Iron Oxides): * * Yellow, Orange, or Brown

* * Important mineral deposits: * * Very common in Brazil (Minas Gerais) and some in Uruguay, Madagascar, and India.

# # # # * * Quality improvement in the gem industry * *

It should be realized that tinted quartz solar will be flashy in color. It does not occur naturally and a magnifying glass should be used to investigate. See the concentration of pigments in the cracks.

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Let's Collect Minerals by Bunchong Tientong

15 Mar 2026 |# Solar Quartz # Mineral # Jewel # Geology # Mineral accumulation