Blue Larvikite: Norwegian rock with blue sheen, nature and care

What is blue larvikite?

Larvikite is an igneous rock: a monzonite, formed by the slow cooling of magma deep underground. It contains feldspar crystals the size of a thumb, an amphibole and minerals rich in titanium. Its name comes from the town of Larvik in Norway. The page larvikite presents the rock in general; here we focus on the variety with blue reflections.

'Blue larvikite' is therefore not a mineral, nor even a recognised variety, but the name of an appearance: Norwegian quarries sell several grades of larvikite under colour names (for example 'Blue Pearl' or 'Royal Blue'). The feldspar crystals in these pieces give a silvery blue glow when the stone is turned in the light, which is called labradorescence.

Where do the blue reflections come from?

The feldspars of larvikite are called 'ternary': they contain significant amounts of three components (potassium, sodium, calcium). As they cooled, they separated into fine alternating lamellae (known as perthite). These lamellae are about as thick as the wavelength of light: they produce an interference effect, hence the silvery blue sheen. It is neither a pigment nor a dye. See also labradorite, a different feldspar whose optical effect is similar.

The Larvik massif is a group of ten plutons from the Permian period (about 292 to 298 million years ago), which cut through much older gneisses, about 1.1 billion years old. The quarries of the region are known worldwide: larvikite is used as facing stone, paving and decoration, and the International Union of Geological Sciences (IUGS) has listed it among the world heritage building stones. See igneous rocks.

Traditional symbolism

The starry night-blue of larvikite evokes the northern sky, depth, calm and intuition. Books on crystals often describe it as a stone for stepping back and for inner travel, sometimes linked to Scandinavian mythology, without any ancient source.

These are modern and symbolic associations. The rock has long been used as a building stone, but the 'energetic' use is recent. No study shows any effect on health or mood.

Traditional correspondences

See the third eye and the origin of the chakras.

How to use it

• In beads and bracelets: a sober grey-blue, easy to match (bracelets).
• As a tumbled stone or pebble: the reflection shows well on a polished surface.
• As a sphere or egg: decoration for a desk or bedside table.
• As a cabochon: pendant or ring; the stone is hard enough for daily wear with a minimum of care (jewellery guide).

Care and cleansing

• Cleaning: lukewarm water, mild soap, soft cloth. Do not rub hard on the polish.
• Sunlight and heat: the rock tolerates light; avoid sudden thermal shocks.
• Knocks: feldspars split along cleavage planes: store it separately.
• Ultrasonic cleaners and steam: to be avoided on cracked pieces.
• Acids, salt: to be avoided as a precaution.
• Symbolic cleansing: smoke, sound or moonlight (guide).

Larvikite, labradorite, dye: the confusions

The reflection of genuine larvikite changes with the viewing angle and disappears when the stone is turned; a fixed blue, identical under every light, is suspect. The sources we consulted indicate that larvikite is generally sold untreated and that the reflection is structural; we have not found any source documenting blue-dyed larvikite. Always ask the seller. See real or fake stone and our commitments.

How to choose

Larvikite is affordable. Look for an even polish and well-visible feldspar crystals that glitter as you turn the stone. Pieces with bright blue reflections are the most sought after. For a sphere or egg, turn it under a lamp to see the effect, since photos do not render it well.

Pairings: with classic larvikite, labradorite, moonstone or black obsidian.

Frequently asked questions

Also read

The meanings mentioned belong to tradition and symbolism. They are neither promises of results nor medical advice. Back to Guide to stones.