Peruvian Pink Opal

Peruvian pink opal is a variety of common opal (opal without play-of-color) celebrated for its gentle, candy-pink to rose body color. Mined chiefly in the Andes of Peru, it is usually opaque to translucent and may carry soft white, grey or brown dendritic veining that adds character to cut stones.

Unlike precious opal, its appeal lies entirely in even, soothing color rather than fire. The pink tone is generally attributed to trace organic or mineral pigments within the silica. It is sometimes sold alongside the blue-green Peruvian opal that comes from the same region.

Its calm pastel look has made it a favorite for contemporary silver jewelry and for buyers seeking a soft, understated gemstone.

Like all opal, Peruvian pink opal is amorphous hydrated silica that precipitated from silica-bearing waters moving through volcanic and sedimentary host rocks in the Andes. Peru's opal deposits are linked to volcanic activity along the Andean cordillera, where hot or weathering fluids dissolved silica and redeposited it in cavities, fractures and altered zones.

Because the silica spheres are irregularly sized and arranged, the material does not diffract light into play-of-color and instead remains "common" opal. The characteristic pink hue is thought to come from trace amounts of organic matter or finely dispersed minerals incorporated as the gel hardened. Associated dendritic patterns form when manganese or iron oxides crystallize along tiny fractures.

Identify it by its opaque to translucent soft pink color, smooth waxy luster, and moderate hardness (5.5-6.5). It shows no play-of-color, so any rainbow fire indicates a different opal or an imitation. A white streak and conchoidal fracture are typical of opal.

Look-alikes include pink chalcedony, rhodonite, thulite and dyed howlite. Chalcedony is harder (about 7) and translucent; rhodonite and thulite are usually a stronger reddish-pink and often show black manganese veining or are notably harder. Dyed stones may show color concentrated in cracks. Natural pink opal tends to have soft, slightly mottled coloring with possible faint dendrites.

Peruvian pink opal is used almost exclusively in jewelry, cut as cabochons, beads and freeform shapes for pendants, bracelets and earrings, frequently set in sterling silver. It is an affordable, attractive alternative to costlier pink stones.

Metaphysically it is marketed as a stone of love, gentleness, emotional healing and the heart, popular in crystal-healing circles for its calming pink color. As a soft, water-bearing stone it should be protected from heat, chemicals and impacts, and cleaned only with a soft damp cloth. Its opacity makes it durable enough for everyday wear when treated with reasonable care.