When you start searching for wedding or engagement rings, you'll often come across the material designation "Pt900."
But many people wonder, "What does the number mean?" or "How is platinum different from other materials?"
Here, we'll explain the features and appeal of Pt900 (Platinum 900) in an easy-to-understand way, even for those choosing a ring for the first time.
What is Pt900 (Platinum 900)?
・A material made of 90% pure platinum
・The remaining 10% is mixed with metals such as palladium and ruthenium to increase strength
・A well-balanced platinum material that combines "beautiful white brilliance" with "high durability"
Why Pt900 is chosen for engagement rings and wedding rings
1. Resistant to discoloration and deterioration
Compared to gold or silver, it is more resistant to air and sweat, and its color is less likely to change in daily life.
2. Hardness and strength
Harder than pure platinum (Pt999), making it reassuring for wedding rings worn every day.
3. A material symbolizing eternity
As "proof of unchanging love," it is a classic choice for engagement rings and wedding rings.
The difference between Pt900 and other materials
△BAUM
・K18 Gold: Offers a rich variety of colors and gorgeous appeal, but may require more care regarding hardness and discoloration compared to platinum
・Pt950: Higher purity results in a more pronounced whiteness, but being slightly softer, it may be prone to scratches depending on the design
・Pt900: A good balance of hardness, durability, and brilliance, offering peace of mind for everyday wear
Pt900 (Platinum 900) is a material perfectly suited for engagement rings and wedding rings, combining beautiful white brilliance with strength.
It continues to be chosen by couples who want to select something they can wear with confidence every day for years to come.
Please try it on in person at a store and experience platinum's elegant brilliance and the way it feels on your hand.
We're sure you'll discover that it's a material truly worthy of the special ring you'll wear for a lifetime together.




