What Items Contain Platinum? A Complete Guide to Finding Platinum Scrap

Most people don't realize they own platinum until they look. Unlike gold and silver, platinum rarely announces itself — it's often hiding inside catalytic converters, laboratory equipment, old jewelry marked "PLAT," and even some dental work. With platinum trading around $2,100/oz in 2026, knowing where to find it can mean the difference between discarding something valuable or cashing in on it.

Catalytic converters: the largest source of platinum scrap

Catalytic converters are the single most valuable source of platinum scrap outside of refineries. The catalytic converter in your vehicle contains a ceramic or metallic substrate coated with platinum group metals (PGMs) — platinum, palladium, and rhodium — that convert harmful exhaust gases into less toxic compounds.

The amount of platinum varies significantly by vehicle type:

Vehicle Type	Approximate PGM Content
Small car (gas)	2–7 grams total PGMs
Large car/SUV (gas)	5–12 grams total PGMs
Diesel vehicle	Higher platinum, less palladium
Hybrid vehicle	Varies widely by make/model

Catalytic converters from luxury European vehicles (BMW, Mercedes, Porsche) and large trucks tend to contain significantly more PGMs than economy cars. Specialized buyers like RRCats.com provide real-time pricing for hundreds of converter models by make, model, and year.

Important: Catalytic converter theft is a serious crime. Only sell converters from vehicles you own with proper documentation proving ownership.

Platinum jewelry

Fine jewelry is the most accessible platinum source for everyday sellers. Jewelry containing platinum is always stamped — look for:

• PLAT, PLATINUM, PT — indicates platinum content
• PT950 or 950 — 95% platinum (most common for jewelry)
• PT900 or 900 — 90% platinum
• PT850 or 850 — 85% platinum

Platinum is frequently used in engagement rings, wedding bands, and high-end settings for diamonds and other gemstones. It became especially popular in the early 20th century (the Art Deco period, 1920s–1930s) and again from the 1990s onward as an alternative to white gold.

White gold vs. platinum: This is the most common confusion. White gold is yellow gold mixed with white metals (nickel, palladium) and coated with rhodium plating. It will be marked "14KW," "18KW," or "WG." Platinum is denser and heavier — a platinum ring feels noticeably heavier than an identical white gold ring of the same size.

Laboratory and scientific equipment

Platinum's extreme resistance to heat and chemical corrosion makes it essential in scientific and industrial settings. Items to look for:

• Crucibles and dishes — Used in chemistry labs for high-temperature reactions. Often pure or near-pure platinum.
• Thermocouples — Wire probes used to measure extreme temperatures. Platinum-rhodium thermocouples are standard in industrial furnaces.
• Electrodes — Used in electrochemistry and analytical equipment.
• Labware from university and industrial labs — Often liquidated as surplus equipment.

Lab equipment is frequently overlooked because it doesn't look like jewelry, but crucibles and thermocouples can contain more platinum by weight than many pieces of fine jewelry.

Dental work

Platinum has been used in dentistry since the late 1800s. Platinum-containing dental items include:

• Crowns and bridges — Some older porcelain-fused-to-metal crowns contain platinum foil or platinum-alloy frameworks.
• Pins and posts — Platinum-iridium alloy pins were historically used in tooth restoration.
• Partial denture frameworks — Some older frameworks contain platinum alloys.

Dental scrap is typically refined by specialized dental recyclers who provide a full assay. Most general precious metals buyers do not process dental platinum.

Vintage electronics and hard drives

Platinum is used in small quantities in certain electronic components:

• Hard disk drive platters — Some older HDDs contain platinum in their magnetic coating.
• Spark plugs — Premium and long-life spark plugs (Bosch Platinum, NGK Platinum) contain a small platinum electrode tip.
• Fiber optic equipment — Some fiber optic cables and connectors use platinum-rhodium alloys for precision drawing dies.

The platinum content per unit in electronics is very small — typically milligrams rather than grams — making individual items low-value. Industrial-scale electronics recyclers are the appropriate outlet for these materials.

Pharmaceutical and chemical industry equipment

Platinum catalysts are critical in the production of nitric acid, silicones, and numerous pharmaceuticals. Used platinum catalysts from these industries represent significant refining value and are handled by specialized industrial refiners.

How to sell platinum scrap

Once you've identified platinum items, the selling process is straightforward:

1. Identify the purity — Look for stamps or have XRF testing done.
2. Weigh your items — Use a digital scale accurate to 0.1 grams.
3. Calculate melt value — Use our free platinum calculator with today's spot price.
4. Get multiple quotes — Specialized platinum refiners typically pay 90–95% of melt value. Always get at least two or three quotes before selling.

Sources

• World Platinum Investment Council: platinuminvestment.com
• USGS, Platinum Group Metals Mineral Commodity Summary 2024: pubs.usgs.gov
• RRCats Catalytic Converter Pricing: rrcats.com
• Elemetal, Platinum Refining: elemetal.com