Loading... Please wait...

Stonebridge Imports Blog

What on Earth Is Prehnite?

Posted by

Prehnite is typically yellow-green and pale-green, but it can also be colourless, white, grey, yellow, and bottle green. Named after Colonel Hendrik von Prehn (its discoverer), this gemstone is transparent to translucent with a pearly, waxy, or vitreous lustre. It is found in South Africa (central locality), China, Australia, Scotland, and the USA. Prehnite is a collection mineral occasionally used for ornamental purposes.

The Physical Properties of Prehnite

Prehnite belongs to the Phyllosilicate sub-class of minerals - a calcium aluminum silicate hydroxide with an orthorhombic crystal system that usually occurs in stalactitic, granular, or botryoidal habits. However, it can sometimes form tabular, pyramidal, and colourful crystals. Prehnite shows a unique mother-of-pearl (pearlescent) effect, and even though it’s a common mineral, the gem variety is considered rare. It exhibits 6-6.5 hardness on the Mohs scale, meaning that it is a tough gem suitable for high-quality jewelry. Another attractive characteristic is its ability to glow in the sunlight and exhibit a moonstone (cat’s eye) effect due to its radial-fibrous structure.

The History of Prehnite

Prehnite was named in 1788 by a Geologist, Abraham Gottlob Werner. He named it in honour of Hendrik von Prehn (Dutch Colonel) who discovered the mineral in 1774 at the Cape of Good Hope (South Africa). The Colonel was a governor of the Cape of Good Hope, and a mineral collector and naturalist who brought prehnite to Europe. It is one of the first minerals to be named after a historical person.

The Lore of Prehnite

Shamans in South Africa thought that prehnite helped them to take the best decisions to guide their tribe. In Australia, the Aborigines believed that the mineral could absorb and stock the sun’s energy and beam during the night to warm up as well as ward off night creatures. Prehnite has been said to heal problems in the chest, lungs, shoulders, thymus gland, kidney, and bladder. Some Shamanistic traditions treat prehnite as a sacred stone because of its ability to vibrate rapidly between the invisible and visible planes of existence. In the past, these stones have been used to increase the strength of dream recall after awakening. People used to take their prehnite stone before going to sleep and ask it for help to induce and prolong their lucid dreams.

The Metaphysical Properties of Prehnite

Overall, prehnite is a stone of inner knowledge, unconditional love, and can positively impact one in stressful situations. It can change our perception of what’s important and reminds us to prioritize. Furthermore, prehnite is a stone of recollection and memory. It is capable of bringing peace and calm by enhancing one’s protective field.

It is believed to be very helpful for those who couldn’t let go of material possessions. People who hoard love or possessions do so due to a deep feeling of deprivation (typically coming from past life experiences where they may have experienced a lack of respect or poverty). Also, prehnite emphasizes the need for personal evolution, spiritual growth, and alignment of own energies with the Divine. It brings the ability to recognize the truth, improves intuition, and helps harmonize the will for action with the heart to coordinate the deeds with the highest goals of one’s true nature.

View Comments


What on Earth Is Chlorite?

Chlorite is a family of common sheet silicate minerals found in sedimentary, metamorphic, and igneous rocks. They form during the early stages of metamorphism, and most of them have an oily to soapy feel, foliated appearance, perfect cleavage, and are green in colour. Chlorite can be found in countries rich with clear quartz, such as Brazil, Nepal, and the USA.The Physical [...]

Read More »


What on Earth Is Beryl?

Beryl is a stone with a transparent, translucent, and vitreous lustre. It consists of beryllium, rings of silicates, and aluminum metals. Beryl can be colourless but also coloured (depending on its impurities). The colours of the stone range in white, yellow, blue, red, and green. In Italian and Sanskrit, the meaning of Beryl is “blue-green from the sea” and “light-green [...]

Read More »


What on Earth Is Aegirine?

Also known as acmite (green-coloured, fibrous variety), Aegirine may occur in combination with other minerals, such as Tugtupite, Albite, Kakotokite, and Arfvedsonite. The colour of Aegirine stones may look like their black, but they are brownish black or very dark green. Localities, where Aegirine can be found, include Kola Peninsula (Russia), Mont Saint Hilaire (Canada), Narsarssuk (Greenland), Kongsberg (Norway), Scotland, USA, [...]

Read More »


What on Earth Is Heliodor?

Named after Greek “helios” and “doron,” meaning sun and gift, Heliodor is a crystal of honey to lemon-yellow colour. It also comes in yellow-green, light green, and greenish-yellow colour. Heliodor a yellow variety of Beryl, and is mined in Nigeria, Brazil, Colombia, Madagascar, Mozambique, Namibia, Russia, and Ukraine.The Physical Properties of HeliodorHeliodor is a variety of Beryl, composed of beryllium aluminum [...]

Read More »


What on Earth Is Gypsum?

A common mineral, Gypsum has been known from antiquity. It’s in sedimentary environments as Alabaster (massive material), Selenite (clear crystals), and Satin spar (parallel fibrous variety). Its colour varies from colourless to brown, greenish, reddish, yellowish, gray, and white. Faceted Gypsum stones are rare because they are quite challenging to facet due to its perfect cleavage. Some of the largest [...]

Read More »


What on Earth Is Gray Moonstone?

Moonstone comes in many colours, but only those with the most beautiful adularescence are cut as gems. Gray moonstone is often called the New Moon Stone and has an extra focus on the mystical side of the moonstone attributes. The largest deposits of Moonstone are in the United States, Mexico, Australia, Armenia, India, Sri Lanka, Myanmar, Madagascar, Poland, Norway, [...]

Read More »


What on Earth Is Gold?

Gold is a valuable metal and has a long history. It has a unique status for millennia and is one of the few metals that can be found in its native state. Not many metals have had such a critical role in our history as gold. Gold comes in yellow colour, although it may be purple, ruby, or black [...]

Read More »


What on Earth Is Petalite

One of the most beautiful gemstones in the Petalite group, this orthoclase pyrite is often used against the evil forces of nature. It can be found colourless but also in yellow, yellow-grey, grey, to white columnar masses and tabular crystals. It is very rare, therefore desirable to collectors (especially if the stones are free of inclusions and large.) It [...]

Read More »


What on Earth Is Nautilus

Nautilus is an ancient sea creature related to octopuses and squids that has remained relatively unchanged for 450 million years. That is why it’s known as the “living fossil.” Throughout its life, the Nautilus shell grows into increasingly larger chambers, so it became a symbol of renewal and expansion. It’s an example of the Golden Ratio and Sacred Geometry as [...]

Read More »


Sign up for our newsletter

Testimonials Add A Review

View Cart Go To Checkout