Danburite stone – decoration of mineralogical collections

Danburite belongs to the group of calcium borosilicates. In terms of characteristics, this rare mineral is only slightly inferior to the “king of precious stones” - diamond. However, it is many times superior to topaz, with which danburite is often confused. A lucky rare person can find jewelry with this gem on the counter of a jewelry store. After all, such a nugget will never be overlooked by collectors and mineralogists.

History and origin

In 1839, the gem was discovered by a man who had nothing to do with mineralogy, archeology or any related science - hockey player Charles Shepard. This event happened in the American town of Danbury, located in the state of Connecticut. The mineral received its name from the place where it was first found. In the same year, the article “Report on Danburite – a New Mineral Species” was published.

There are cases in history where danburites were passed off as diamonds. Therefore, another name for the nugget is found - “Mexican diamond”. In addition, danburite externally resembles stones such as citrine, apatite, phenacite, topaz (especially varieties of yellow shades). There is also a consonant name “daMburite”, which is used to call red corundums of artificial origin.

The origin of the mineral can be metamorphic or hydrothermal. Crystal formation occurs in areas with the highest concentrations of boron, which reacts with sulfate clay minerals. The bulk of gems occur among anhydrite strata, marble and low-temperature veins.

Mining sites

Known danburite deposits are located in the following areas:

  • USA.
  • Russia (Transbaikalia, Magadan, Ural, Primorsky Territory).
  • Austria.
  • Central Asia.
  • Bolivia.
  • Mexico.
  • Myanmar.
  • Switzerland.
  • Japan

The island of Madagascar is famous for the best specimens. The largest, most expensive crystals that have collection value are brought from there.

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physical properties

Property Description
Formula Ca[B2Si2O8] или B2O3·CaO·2SiO2
Hardness 7 - 7,5
Density 3,0 g / cm³
Refractive index 1,630 - 1,636
Syngonia Rhombic
Kink Rough or conchoidal
Cleavage Imperfect
Brilliance Glass, greasy when broken
Color Colorless, wine yellow, pink

Danburite is the main source of boron ore. The composition contains impurities such as strontium, iron, manganese, sodium, magnesium. It is formed by prismatic crystals of the orthorhombic system. It is also found in the form of solid or granular masses and dense stalk-type aggregates.

The yellow shades of the mineral exhibit subtle pleochroism. White, greenish-white, and occasionally blue specimens are endowed with luminescent properties. Under the action of a blowpipe, the stone becomes colorless glass. This produces a green flame. Under ultraviolet light, danburite fluoresces with a blue-green or bright blue glow, and when heated it acquires a red tint.

Varieties and colors

The mineral danburite is classified not by shades, but by the method of formation and occurrence. There are:

  • Hydrothermal mineral. This stone is found in pegmatites, alpine and ore veins.
  • The metamorphic appearance is characteristic of skarns and contact-metamorphic rocks.

Behmenites are included in a separate group with their own name - these are danburites in which needle-shaped inclusions are visible. The name comes from the American collector Spencer Bement.

The color of danburites is weakly expressed. Most stones are white or painted in pale tones of yellow. Colorless transparent or brownish-yellow crystals are found. Rare specimens are considered to be stones with a pink or orange tint.


Medicinal properties

Danburite is practically not used in the lithotherapeutic field. It is believed that the healing properties of this mineral are weak and do not have the desired healing effect. However, some experts claim that meditation sessions using danburite crystals have a calming effect. The stone helps relieve physical fatigue, nervous tension, and cope with the consequences of stressful situations.

Magical properties

While danburite is not famous for its healing powers, the magical properties of this gem have been known for a long time. Wearing a crystal helps the owner to be in real time, to maintain sobriety in any state of affairs. In addition, the talisman will tell you how to correctly “filter” your environment.

The owner of a rare gem becomes self-critical, able to separate successful and unsuccessful actions on his part. In case of great success, the amulet prevents the emergence of an intoxicating feeling of euphoria and pride.

The main property of danburite is the ability to regulate the behavioral tendencies of the owner. The stone will help a person in all endeavors, but only when his intentions are pure. If the crystal senses the emergence of bad intentions, an attempt to deceive or offend someone, the talisman will begin to work against the owner. The first signals will be a deterioration in the psychological state of the body or an exacerbation of diseases. If a person ignores such a sign, the situation will worsen.

The property of the mineral is also noted to be the purification of human karma. The gem helps solve problems that have accumulated over several generations of the family.


Danburite is considered a rare mineral, which has been used in several fields:

  • jewelry;
  • industrial;
  • collectible.


Jewelers rarely use danburite, despite the fact that after brilliant cutting, transparent varieties of this gem are difficult to distinguish from diamond. It's all about the cost of raw materials - for a diamond substitute, this stone is expensive compared to other options for similar imitation. In addition, low prevalence, coupled with a weak color range and market value, reduces the attractiveness of the nugget in the eyes of a jeweler. However, the mineral is perfectly amenable to processing due to its physical properties, so the creators of beautiful jewelry do not neglect this gem.

Another thing is collectors. For them, each specimen has mineralogical value. A stone such as danburite is a desirable specimen to complement any collection.

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In industry, danburite serves as a raw material for obtaining an important element of the periodic table - boron.

Mineral cost

The price of faceted danburite crystals ranges from 0,1-300 euros. For 10-13 euros you can buy a cut stone weighing 0,5 carats or a rough sample weighing 6-7 grams. For cut specimens of 10-15 carats you will have to pay from 130 to 210 euros.

Astrological Compatibility

("+++" - the stone fits perfectly, "+" - can be worn, "-" - absolutely contraindicated):

Zodiac sign Compatibility
Aries + + +
Taurus +
Gemini +
Cancer +
a lion + + +
Virgo +
Scales +
Scorpio + + +
Sagittarius + + +
Aquarius +
Pisces +

Astrologers believe that danburite will benefit people whose character inclines them towards adventurous actions, pride, and vindictiveness. Such traits are characteristic of Sagittarius, Aries, Leo and Scorpio.

For those born under the constellation Capricorn, wearing a danburite talisman is contraindicated. These people will not be able to coexist with the mineral.

For others, the gem is absolutely harmless if you listen to the amulet, which is generous with its hints.


Interesting Facts

The largest faceted danburite of an unusual yellowish-pink color adorns the British Museum of Natural History. The weight of this exhibit is 138,6 carats. Place of production: Myanmar.

The Ottawa Museum (Canada) is famous for another rare specimen of the mineral - an orange crystal weighing 86,5 carats. This fire stone was brought from the island of Madagascar.