Platinum ring making with a twist!
Handmaking a platinum wedding ring is one of the most demanding yet rewarding pursuits in fine jewellery manufacture. Platinum is a dense, hard wearing grey/white coloured metal and while gold yields readily to heat and pressure, platinum behaves under different physical laws.
We begin with a 6 x 5mm piece of square wire. 14mm long this piece weighs just over 15g
The Nature of Platinum
To fabricate a ring from platinum—most commonly an alloy of 95% pure platinum and 5% ruthenium, iridium, or cobalt—a jeweller must respect its unique material profile. Unlike white gold, which is an alloy typically plated with rhodium to mask a yellowish cast, platinum is naturally dense, bright white, and hypoallergenic. If you are familiar with the periodic table, you will remember that platinum is a noble metal, a famously unreactive set of elements.
Critically, platinum does not conduct heat like other precious metals. While gold and especially silver quickly disperses heat throughout a piece, platinum holds thermal energy locally. It also boasts an exceptionally high melting point: roughly 1,768°C (3,214°F), compared to gold’s ~1,064°C. Working it requires specialized eye protection (shade 5 or higher) to guard against the retina-damaging brilliance of the torch flame, as well as ceramic or tungsten soldering boards that can withstand the intense thermal demand without degrading.
Milling, Annealing, and Sizing
Transforming a blocky ingot into a wearable band demands substantial physical force. The metal is passed repeatedly through a rolling mill, compressing it into square stock and gradually shaping it into the desired cross-section, whether a classic D-shape, a modern flat profile, or a subtle court shape.
As platinum is rolled, its crystal structure compresses, causing rapid work-hardening. To restore ductility, it must be regularly annealed. The jeweller heats the bar to an intense orange-white heat using a neutral torch flame and allows it to air-cool.
Once the correct profile and dimensions are achieved, the stock is cut to exact length using a jeweller’s saw. The formula for the blank’s length accounts for both the target finger size and the thickness of the metal:
Bending and Welding the Seam
Bending thick platinum wire into a true circle requires heavy-duty half-round pliers and deliberate muscle. The two cut ends must meet with absolute perfection; even a microscopic gap will compromise the join.
Rather than using low-melting solder, master craftspeople prefer to fuse or weld the seam. Using a sliver of platinum solder matched to the alloy's purity—or autogenous welding, melting the base metal into itself—the torch is focused directly onto the seam. At high heat, the metal flows together, creating an unbroken crystalline matrix. This ensures the joint will never display a discoloured seam line over decades of wear. Laser welding is a cleaner, more modern solution.
Trueing, Profiling, and Finishing
After the seam is welded, the ring is slipped onto a steel ring mandrel and trued with a brass or nylon mallet until it forms a perfect geometric circle.
Next comes hand profiling. Using precision needle files and abrasive emery paper of ascending grits (from 240 up to 2000), the jeweller refines the edges, softens the internal comfort fit, and removes any trace of tool marks.
Finishing platinum is notoriously labor-intensive. Platinum does not wear away when abraded; instead, it "drags" and displaces. Standard polishing compounds like rouge have little effect on it. The craftsperson must use aggressive, diamond- or alumina-based compounds paired with firm, tightly stitched muslin buffs running at high speeds.
The polishing progression moves methodically from coarse grey or orange compounds to fine blue or white compounds, culminating in an uncompromising, deep-luster mirror finish that enhances the metal's natural weight and cool, silvery glow.
The finished ring represents an enduring alliance of extreme metallurgical discipline and delicate artistry—a seamless, weighty circle built to outlast a lifetime of daily wear.
Finished, solid platinum twisted wedding bands.
