Phosphosiderite tumbled
A variety of Phosphosiderite
What is Phosphosiderite tumbled?
Tumbled phosphosiderite tumbled has a color range between pink and deep lilac, with a matte finish and occasional yellow veins. It has a rhomboid appearance and usually a smooth feel, although sometimes tiny holes are found. Mined in Chile, Germany, Argentina, and the USA, phosphosiderite tumbled is frequently made into flat-backed cabochons.
Optical Properties
- Refractive Index
- 1.692-1.739
- Pleochroism
- Pale rose-red, carmine-red, colorless
- Optical Character
- Biaxial negative
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Phosphosiderite tumbled before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Quick Facts
Physical Properties
- Streak
- White
Chemical Properties
- Chemical Formula
- FePO4 · 2H2O
- Elements
- Fe, H, O, P
Also Known As
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