Where can I safely invest in platinum and diamonds?

Why should I choose platinum over gold? Because platinum is much rarer. The much lower production and the larger number of possible applications means demand for this is much greater. Platinum jewellery requires much less maintenance compared to jewellery made of gold. They carry an equally high status, but don’t corrode. This means you will not need to have your platinum jewellery cleaned or spruced up for the same level of prestige. Gems like diamonds also look best when combined with platinum or white gold.

In addition, platinum isn’t just in demand in the jewellery industry. Its versatility has also been discovered in the industrial and medical world.

Platinum isn’t only found as bullion or finished jewellery. It appears in small but recoverable amounts across everyday and industrial items. Below are common sources, short identification tips and a reminder to have any suspect material professionally assayed before assuming value.

Catalytic converters

Catalytic converters for petrol and diesel vehicles contain platinum group metals that help exhaust reactions. Look for the metal honeycomb inside the shell; converters feel heavy for their size and are often stamped with part numbers rather than purity marks. They are non-magnetic and denser than ordinary steel. Do not try to open converters yourself; a professional assessor or recycler can safely extract and evaluate the substrate.

Obsolete electronics

Hard drive platters, certain fibre-optic connectors and legacy electrical contacts sometimes carry thin platinum coatings. Platters are mirror-like and unusually heavy for their diameter, while optical connectors and contact pins may show a silvery, non-magnetic plating. These coatings are microscopic, so value depends on volume and professional recovery methods; a bulk assay is the reliable way to know what you have.

Dental crowns and bridges

Older dental restorations can include platinum alloys. Unlike gold, platinum-containing dental pieces are silvery-white, may not be magnetic and can feel heavier than base-metal alternatives. Dental alloys are often attached to porcelain; send material only to refiners who separate and assay the metal rather than guessing by appearance.

Laboratory equipment

Crucibles, evaporating dishes and some thermocouple components used in high-temperature labs can contain platinum or its alloys because they resist heat and chemical attack. These items are typically heavy, inert to common acids and may carry maker markings rather than purity stamps. Because lab equipment can be contaminated with chemicals, have professionals handle, clean and assay them.

Medical devices

Small medical components such as pacemaker leads, some catheter tips or stent elements can include platinum or platinum alloys for radiopacity and biocompatibility. Legal and ethical rules apply when sourcing medical scrap, so accept material only with clear ownership and documentation. Identification is often by part number or manufacturer mark; a certified assay will confirm presence and quantity.

Industrial sensors and spark plug tips

Sensors, electrode tips and some spark plug designs use platinum for stable electrical and catalytic properties. These parts are small and wear down with use, so collect in volume and have them tested in aggregate. Non-magnetic, silver-grey fragments that are unusually dense for their size warrant professional inspection.

Obsolete jewellery and watch parts

Broken clasps, old watch crowns and vintage settings sometimes contain higher-purity platinum. Hallmarks such as Pt, Pt950 or PLAT indicate platinum content, though wear can obscure stamps. When hallmarks are missing, rely on weight, colour and a subsequent assay rather than visual guessing.

High-temperature industrial residues

Slags, filters and catalyst supports from chemical plants or fuel-processing units can concentrate platinum group metals. These materials are often bulky and dirty; refiners and specialist recyclers have the processes to recover platinum from such residues. Never attempt chemical recovery at home; professional facilities are required to separate and certify the metal.

Safety, ownership and legality

Always confirm legal ownership before collecting or selling scrap, and never remove parts from vehicles or medical devices without permission. For both safety and accurate valuation, present suspect material to reputable refiners or accredited labs for professional cleaning and assay. That way you avoid legal risk and obtain an objective measure of any recoverable platinum.

1. Why should I opt for bars of platinum?

Bars of platinum are purely an investment. You buy a bar and place this in your safe until the raw material has increased in value enough for you to sell it on again. Bars are harder to sell on than other forms, but you will get a high return on the pure raw material. Do pay attention to the stamp from a reputable seller. This means you’ll be able to count on 99.95% purity.

2. Why should I opt for platinum coins?

Which form of platinum should I choose for a smaller investment? Opt for platinum coins. You can choose the quantity you want to buy with which starting budget. You can subsequently sell them all at the same time, or a few each time. This will ensure you can keep something for yourself for later. This flexibility also makes it easier to sell them on again when you are ready to do so.

3. Why should I opt for platinum jewellery?

Finally, you could opt for an investment in a valuable piece of jewellery. Platinum can be beautifully combined with diamonds into a timeless accessory which suits everything. Globally platinum jewellery is also experiencing an enormous rise as a result of its sustainability. You are therefore always opting for quality. How can I realise even higher returns on my jewellery? With sentimental value. Jewellery will increase in value during the course of time, as you give this your own story.

If you think an item contains platinum, a laboratory analysis is the only reliable method. There are three common approaches worth knowing. XRF, or X-ray fluorescence, gives a fast, non-destructive surface reading that identifies elements present and provides a provisional purity estimate. ICP-OES or ICP-MS are solution-based techniques that measure elemental concentrations after the sample has been dissolved, producing precise bulk composition results. Fire assay, less common for platinum than for gold, can be adapted by specialist refineries to determine total precious metal content in a sample.

For trustworthy results, send samples to an ISO 17025 accredited laboratory or to a reputable precious metals refiner that offers independent assays. When you submit material, request a certificate stating sample weight, identified elements and reported purity or concentrations. Prepare samples as the lab requests; some labs prefer cleaned, separate metal pieces, others accept small attached substrates for paired testing. Ask what sample preparation they will perform so there are no surprises about how the material is handled.

Assay results directly influence resale and refining offers. A certified purity figure and weight allow buyers to calculate an accurate payout and reduce disputes. If a lab report identifies contaminants or attached substrates, refiners will quote based on recoverable metal alone, so the report helps you choose the best buyer. Start by contacting ISO-certified testing labs, established precious metal refiners or industrial metal recovery services for guidance on how to submit samples and what documentation they require.

A diamond will always be your best choice if you’re looking for a valuable investment with added emotional value. The international treaty to ban conflict diamonds via the Kimberley process will guarantee you ethical diamonds. Plus you can also buy diamonds in addition to platinum in the form of a special and personal piece of jewellery.

Where can I find a reliable partner for my valuable investment? Why can I find beautiful platinum and diamond jewellery? Ask BAUNAT’s diamond experts for advice for your safe investment in platinum jewellery.

Scrap platinum is valued on a few clear principles: the quantity of recoverable metal, its purity and how easily a buyer can extract that metal. Typical buyers include precious metal refiners, specialist catalytic converter recyclers, dental metal refiners and industrial recyclers. Each buyer type evaluates material differently. Refiners focus on assay-backed weight and purity, catalytic recyclers price converters by substrate weight and content, while dental refiners handle mixed alloys and often separate precious fractions before paying out.

Documentation and assay certificates raise offers because they remove uncertainty. If you can provide a lab certificate showing weight and purity, or clear provenance for medical or dental material, buyers will typically give more competitive quotes than for unknown, untested scrap. The physical form also matters: loose, reasonably clean metal is easier to process than powdery residues or alloy encased in dense substrates. Explain to buyers what you have, provide any part numbers or markings, and disclose if items contain adhesives, ceramics or other contaminants.

When preparing material for sale, avoid risky or destructive attempts to separate substrates yourself. Gentle cleaning to remove gross dirt is fine, but aggressive chemical or mechanical processing can destroy value and present safety hazards. Instead, sort by type where possible, label batches, and ask potential buyers how they prefer samples to be presented. Contact at least two different refiners or recyclers for written quotes based on the same assay or sample description; this comparison helps ensure you receive a fair market offer. Keep all assay documentation so the valuation trail is clear for future reference or for presenting to other buyers.