Flower Jasper

Flower Jasper is a trade name for jasper that contains pale, radiating mineral clusters resembling flowers or blossoms set against a darker beige, gray, or green background. The 'flowers' are spherulitic or rosette growths within the opaque microcrystalline quartz.

It overlaps with chrysanthemum stone and orbicular jaspers in appearance, but flower jasper specifically refers to the floral rosette pattern. Lapidaries prize specimens with well-formed, evenly distributed blossoms.

Flower Jasper forms when silica-rich fluids precipitate into host rock as microcrystalline quartz, while certain minerals crystallize in radiating, needle-like sprays from central nucleation points. These spherulitic clusters grow outward into the surrounding silica, producing the flower-like rosettes.

The contrast between the pale radiating minerals and the iron- or chlorite-stained jasper matrix makes the blossoms stand out. Continued silicification locks the rosettes into a solid, polishable stone, preserving the floral pattern indefinitely.

Look for an opaque jasper scattered with pale, radiating starburst or flower-like clusters on an earthy background.

• Hardness: 6.5-7; scratches glass.
• Luster: waxy raw, vitreous polished.
• Streak: white.
• Look-alikes: chrysanthemum stone shows similar radiating sprays but in a dark limestone or matrix rather than jasper; orbicular jaspers show solid round orbs rather than radiating petals. The radiating, petal-like rosettes are the diagnostic feature.

Flower Jasper is a decorative lapidary stone cut into cabochons, beads, and tumbled pieces that display its floral patterns. Well-formed blossoms make it popular for nature-themed jewelry and collector specimens.

Durable at near 7 Mohs, it polishes well and wears reliably. Metaphysically it is associated with growth, renewal, and emotional balance, traditional beliefs rather than scientifically established facts.