Osmium Coins and Bars- Do They Exist?

Osmium Coins and Bars- Do They Exist?

Osmium coins and bars… Do they exist? And if they do, are they expensive? How to legally buy and own osmium bullion? Learn it in my guide below. Here’s an awesome quiz about Osmium coins and bars. Take it after you’ve read my guide. What is Osmium? Osmium (symbol Os, atomic number 76) is a … Read more

What is 950 Palladium?

950 palladium is an alloy containing 95% pure palladium and 5% other metals (typically silver or ruthenium). This durable, tarnish-resistant white metal offers a platinum-like appearance at lower cost and weight, making it popular for wedding bands and jewelry. It’s naturally hypoallergenic and non-magnetic (though becomes weakly magnetic if alloyed with ferromagnetic materials). Most palladium … Read more

Does Rhodium Tarnish? Does it Rust, Corrode and Oxidize?

Does rhodium tarnish?

Does rhodium tarnish? Does it corrode, rust and oxidize? No, rhodium doesn’t tarnish. It’s a noble metal that doesn’t corrode, rust and oxidize under normal day-to-day circumstances. However, rhodium plating on jewelry wears off over time exposing the base metal underneath, which then tarnishes and discolors. Learn more below! Here’s an awesome quiz about rhodium … Read more

What is Mint Mark on a Coin? And What’s the Rarest Mint Mark on a Coin?

What is a coin mint mark? Is it rare?

Ever noticed a tiny letter on your coins and wondered what it means? That’s a mint mark, and it holds a wealth of history and significance. Coin mint marks have been used for thousands of years, dating back to the Ancient Greeks and Romans, who employed them to ensure accountability for coin quality. Mint marks … Read more

Ruthenium Industry Statistics, Facts Trends and Data for 2026

The global ruthenium market was valued at $5.1 billion in 2023, projected to reach $7.7 billion by 2032. Annual production is approximately 30 metric tons (1,058,218 ounces), primarily as a byproduct of platinum mining. Current demand stands at 1 million ounces yearly, expected to reach 2.3 million ounces by 2032. South Africa dominates with 2,500 … Read more

Rose Gold Patina on Oura Rings and Jewelry- Everything You Need to Know!

rose gold patina

Rose gold patina is a natural darkening process caused by copper oxidation in the rose gold alloy when exposed to oxygen and moisture. Unlike tarnish, patina is often considered desirable as it adds vintage character and depth to rose gold jewelry rather than creating unsightly discoloration. Lower karat rose gold (10k, 14k) patinates faster than … Read more