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Lapis lazuli
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Lapis lazuli

Lapis lazuli is one of the oldest of all gems, with a history of use stretching back 7,000 years. 
Lapis is a rock and not a mineral because it is made up from various other minerals (to be a true mineral it would have one constituent only). 
The name derives from the Latin, lapis, which means stone, and from the Arabic, azul, which means blue.

Table of contents
1 Description
2 Uses
3 Enhancements
4 Imitations
5 History
6 Metaphysical qualities
7 Details
8 Sources
9 External links


A carving in high quality lapis lazuli, showing gold-coloured inclusions of pyrite. These inclusions are common in lapis and are an important help in identifying the stone. The carving is 8 cm (3 inches) long.

Its main component is lazurite (25 to 40 percent), a mineral composed of sodium, aluminium, silicon, oxygen and sulphur. Most lapis also contains calcite (white), sodalite (blue) and pyrite (yellow). Other possible constituents are augite, diopside, enstatite, mica, hauynite, hornblende and nosean. Its formula is (Na,Ca)8(Al,Si)12(O)24(S)2 FeS- CaCO3.

It usually occurs in crystalline limestones as a result of contact metamorphism (see metamorphic rock).



Lapis takes an excellent polish and has been made into jewellery, carvings, boxes, mosaics, ornaments and vases. In architecture it has been used for cladding the walls and columns of palaces and churches.

It is also ground and used to make pigment for oil paint.


The most common enhancement for lapis lazuli is dyeing (staining), where a stone with white calcite inclusions is stained blue to improve the colour. Other enhancements commonly seen are waxing and resin impregnations, again to improve colour. The colour of stained lapis is unstable and will fade with time.

As with all precious stones, it is a good practice to have any major purchases tested by a reputable gem lab to determine if the stone has been enhanced.


Sintered synthetic blue spinel was once used as an imitation of lapis lazuli but is rarely seen today. So-called synthetic lapis lazuli (such as the Gilson product) is more properly termed an imitation, since it does not match exactly the structure and properties of the natural. It is found in various forms, complete with pyrite specks (but all lacking calcite). Various forms of glass and plastic are also commonly seen as imitations.


In ancient times, lapis lazuli was known as sapphire, which is the name that we use today for the blue corundum variety sapphire. It appears to have been the sapphire of ancient writers because Pliny refers to sapphirus as a stone sprinkled with specks of gold. A similar reference can be found in the Christian Bible in Job xxviii. 6.

With the ancient Egyptians lapis lazuli was a favourite stone for amulets and ornaments such as scarabs; it was also used by the Assyrians and Babylonians for seals. . Egyptian burial sites dating before 3000 B.C. contained thousands of jewelry items, many of lapis. Powdered lapis was favored by Egyptian ladies as a cosmetic eye shadow.




The beautiful blues in paintings from the Renaissance are thanks to the blue of lapis lazuli. Ground to a powder it forms the pigment ultramarine. Ultramarine has now been largely superseded by artificial preparations.

Metaphysical qualities


Lapis lazuli is said to be associated with self-confidence, truthfulness, openness and inner tranquility. Lapis lazuli is the ancient stone of mental and psychological health, said to promote spiritual healing, mental calmness and strength of will, increased psychic abilities and spiritual growth.

When used during meditation, it is believed to aid in detaching the mind from the physical body and allowing for a deeper and more open state of consciousness. It helps establish a connection with the creative force and in receiving information from other planes of consciousness.

It is said to be a good stone for emotional healing and treatment of disorders of the throat, bone marrow, thymus, and immune system.


Colour: blue, mottled with white calcite and brassy pyrite
Habit: compact, massive
Density: 2.7 to 3.0 grams per cubic centimetre
Specific Gravity: 2.4
Hardness: 5 - 5.5
Streak: light blue
Fracture: uneven
Crystal system: none, lapis is a rock. Lazurite, the main constituent, frequently occurs as dodecahedra
Lustre: vitreous to greasy
Cleavage: none
Composition: sodium calcium aluminium silicate
Transparency: opaque
Refractive index: 1.5
The variation in composition causes a wide variation in the above values.


The most important sources are the mines in Badakhshan, northeastern Afghanistan, and those near Ovalle, Chile, where it is usually pale rather than deep blue. Other less important sources are the Lake Baikal region of Russia, Siberia, Angola, Burma, Pakistan, USA (California and Colorado) and Canada.

External links