Latest Mark Rubinstein Stories
High karat gold has titanium, chromium and iron contamination.
Walker Metalsmiths Celtic Jewelers are using research and networking to seek heirs to airliner crash victims.
Python hunters find a partially melted gold medallion set with antique rose cut diamonds and sapphires in the debris field of two fatal plane crashes.
- A ceramic container used inside a fuel-fired kiln to protect pots from the flame.