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Selenite / Satin Spar - CaSO4·2H2O

Selenite: Gypsum variation

Before we start with Selenite, I want to acknowledge that "Selenite" is supposed to refer to transparent gypsum minerals, where as opaque white 'selenite' is referred to as "Satin Spar" - However, they are both forms of the same mineral composition and haven't been artificially treated, so I wouldn't worry about it.


Selenite is a crystalline variety of gypsum, characterized by its translucent to transparent appearance and distinct prismatic crystal structure.


Valued for its aesthetic beauty, selenite is often used for decorative purposes, carving, and in the creation of unique metaphysical tools like wands and spheres.


Most commonly colorless or white, but it can also exhibit hues of orange, brown, and green due to impurities present during formation.


Vitreous to silky, contributing to its delicate and ethereal appearance. The crystal's unique striations enhance its visual allure.


Common, but large and well-formed crystals with exceptional clarity and lack of inclusions are highly sought after by collectors.

Country of Origin:

Found globally, notable sources include the United States (California, Utah), Mexico, Russia, and Morocco.

Gypsum is a common mineral in the country, and selenite is one of its crystalline varieties. Here are some regions where selenite can be found in Australia:

  1. Lake MacDonnell, South Australia: Lake MacDonnell, located in South Australia on the Eyre Peninsula, is known for its rich deposits of gypsum, including selenite crystals. The lake is one of the largest gypsum deposits in the Southern Hemisphere, and selenite formations can be found in the surrounding areas.

  1. Lake Bumbunga, South Australia: Another location in South Australia, Lake Bumbunga, is also associated with gypsum deposits. While the lake itself is known for its vibrant pink color due to algae, the surrounding areas may contain selenite crystals.

  1. Lake Hart, South Australia: Lake Hart is another saline lake in South Australia where gypsum deposits, including selenite, can be found. The crystalline structures may appear in and around the lake, especially in the dry lake bed areas.

  1. Salt Lakes of Western Australia: Various salt lakes across Western Australia, such as Lake Ballard and Lake Disappointment, have gypsum deposits that can include selenite crystals. These lakes are part of the arid landscape where evaporation leads to the formation of salt and gypsum.

  1. Queensland and New South Wales: Gypsum deposits, and consequently selenite, can also be found in parts of Queensland and New South Wales. These areas may have gypsum-rich soils and formations where selenite crystals can occur.

  1. Caves and Underground Formations: Selenite crystals may also be discovered in caves and underground formations in different parts of Australia. Caves with gypsum-rich environments can foster the growth of selenite formations over time.

It's important to note that specific locations where selenite can be found may vary, and the mineral is often associated with gypsum-rich geological formations. As with any mineral collection, it's essential to respect local regulations and obtain proper permissions before exploring or collecting specimens. Additionally, the availability of selenite in certain areas may change over time due to environmental factors and human activities.


Forms in evaporative environments where gypsum-rich water recedes, allowing crystals to grow. It can also be found in association with other minerals, such as calcite and halite.


Maintains a hardness of 2 on the Mohs scale, making it relatively soft and easily scratched. Despite this, selenite's unique properties make it highly valued.

Chemical Composition:

Composed of calcium sulfate dihydrate (CaSO4·2H2O), the same mineral as gypsum, but with a different crystalline structure.

Crystal System:

Monoclinic, displaying flat, elongated prismatic crystals with distinctive striations along the length of the crystal.


Selenite has a rich history, with ancient cultures recognizing its association with the moon and incorporating it into various rituals and ceremonies. It has been used for both practical and metaphysical purposes for centuries.

Intended Healing:

Associated with the crown and third eye chakras, selenite is believed to enhance spiritual awareness, mental clarity, and intuition. Its purifying and high-vibrational qualities make it a popular choice in energy work and meditation practices. As with any metaphysical beliefs, individual interpretation and discretion are advised.


As all of the fibres in the crystal structure of selenite face the same direction, the stone has an interesting relationship with perception. Some specimens when polished the right way will lift an image from below the stone, to the top of the stone: This once gave selenite the nick-name "Tv Stone", and was said to be used by medieval seers to read their spells through to supercharge them with the crystal power.

Health Warnings:

Considered safe to handle, but being a relatively soft mineral, care should be taken to prevent scratches. Selenite is also soluble in water, so exposure to moisture should be minimized.

Ingestion may cause nausea, vomiting, and diarrhea May cause metallic taste breath Irritating to eyes, respiratory system and skin Coughing and wheezing Dyspnea (Shortness of breath and difficulty breathing) May cause bronchitis May cause chemical pneumonitis May cause pulmonary edema It may affect the kidneys May affect the liver May cause central nervous system effects May affect the blood. Google "MSDS SELENITE" for more

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