What is granulation in jewellery making?
By Jared James · Last updated 21 May 2026
Definition
Granulation is a technique in which tiny balls or spheres of gold or silver are applied and fused to a metal surface to create textured decorative patterns. The process dates back over 5,000 years to the ancient Sumerians and was mastered by Etruscan craftspeople around 700 to 400 BCE, who produced jewellery of extraordinary delicacy that modern jewellers still struggle to replicate precisely. The remarkable aspect of true granulation is that the tiny spheres are bonded without visible solder, using a fusion technique that joins the metals without filling the gaps between the granules.
Frequently asked questions
- How are granules attached without solder?
- The traditional Etruscan technique uses a copper salt compound that, when heated, creates a thin bond exactly at the contact point between granule and surface. The copper diffuses into the gold alloy at a lower temperature than solder, fusing the pieces invisibly.
- Is granulation still used today?
- Yes, contemporary fine jewellers continue to use granulation both in the traditional precious metal sense and in more modern interpretations. It is technically demanding and time consuming, so granulated pieces tend to be handmade luxury items.
- What metals are used for granulation?
- Gold is the classic material and the one the Etruscans worked with, though silver and sometimes gold alloys with fine gold granules are also used. The technique requires consistency in sphere size and a very controlled heat source.
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