Natural Opalized Clam Shell

Natural Opalized Clam Shell — Authentic Fossil Specimen

Millions of years ago, a clam shell was slowly replaced by silica — molecule by molecule — until it became something extraordinary: a fossil that glows with the subtle play-of-color found only in natural opal. These opalized clam shells from Idaho are among the rarest intersections of paleontology and gemology, prized by fossil collectors and mineral enthusiasts alike.

Each purchase includes one specimen, hand-selected from the six pictured examples. If you have a preference for a specific piece, contact us before ordering.

Specimen Details

• Origin: Idaho, USA
• Composition: Natural opal replacement via silica infiltration
• Chemical Formula: SiO₂·nH₂O (hydrated silicon dioxide / opal)
• Mohs Hardness: 5.5–6.5 (display-grade)
• Appearance: Raw, unpolished with authentic natural texture
• Color: Unique play-of-color; subtle shifting hues
• Quantity: One specimen per purchase

Metaphysical & Healing Properties

Opalized fossils carry the dual energy of ancient earth wisdom and the transformative power of opal. They are traditionally associated with:

• Emotional Clarity & Balance — helping to release old patterns and bring calm to turbulent emotions
• Grounding & Centering — connecting you to the stabilizing energy of the earth
• Transformation & Personal Growth — opal is a stone of change, encouraging evolution and new perspectives
• Ancient Earth Connection — a bridge to deep time and the wisdom of natural cycles
• Meditation & Intention-Setting — used as a focal point in mindfulness and energy work practices

Each piece is one-of-a-kind. Color, pattern, and opal intensity vary naturally between specimens.