Platinum Purity Guide: Understanding Pt950, Hallmarking & Pricing
Understand Platinum purity levels and the Pt950 mark. Learn why Platinum is different from White Gold and how to check for authentic PGI hallmarking.
Platinum Purity Scale & Standards
Platinum is naturally white and much denser than gold. In India, the standard for platinum jewelry is Pt950, meaning it is 95% pure platinum.
| Type | Fineness | Platinum Content | Best Used For |
|---|---|---|---|
| Pure Platinum | 999 | 99.9% | Industrial use and Investment bars. |
| Jewelry Grade | 950 | 95.0% | The global standard for rings and chains (Pt950). |
| Budget Grade | 900 | 90.0% | Used in some markets for smaller accessories. |
| White Gold | Variable | N/A | Not Platinum. It is Gold mixed with White alloys. |
Platinum vs. White Gold: What's the Difference?
They look similar, but their composition and value are very different.
- Purity & Color: Platinum is naturally white and stays white forever. White Gold is an alloy of yellow gold that is plated with Rhodium, which eventually wears off and requires re-plating.
- Density & Weight: Platinum is 40% heavier than 14K gold. A ring made of Platinum will feel significantly more substantial and 'premium' on the finger compared to a gold ring of the same size.
- Hypoallergenic Properties: Because Platinum jewelry is 95% pure, it is hypoallergenic. This makes it the ideal choice for people with sensitive skin who might react to the nickel used in gold alloys.
How to Verify Platinum Authenticity
In India, look for certification from the Platinum Guild International (PGI) and the BIS.
Check for these three markings:
- Pt950 Mark: The purity mark indicating 95% pure platinum.
- PGI Logo: The mark of quality from the Platinum Guild International.
- UID Number: A unique identification number provided by the jeweler or lab.
How Platinum is Priced
Platinum pricing is unique because it is harder to work with than gold:
- Higher Making Charges: Platinum has a very high melting point. Crafting it requires specialized tools and expertise, leading to higher labor costs.
- Density Cost: Since Platinum is denser, the same ring design will require more grams of metal in Platinum than in Gold, increasing the total price.
- 3% GST: Like Gold and Silver, a flat 3% GST is applied to Platinum purchases in India.
Frequently Asked Questions about Platinum
Why is Platinum more expensive than Gold jewelry?
Even if the raw price per gram is lower, Platinum jewelry is 95% pure (vs 75% in 18K gold) and much heavier (denser). Higher purity and weight make the final piece more expensive.
Does Platinum scratch?
Yes, all precious metals scratch. However, when Platinum scratches, the metal is simply displaced, not lost. This develops a 'patina' finish that many people find desirable over time.
Can I wear my Platinum ring every day?
Absolutely. Platinum is the most durable precious metal and is highly resistant to wear and tear, making it the best choice for engagement and wedding rings.