METAL  PURITY

 

Since many people are extremely allergic to nickel, all metals we use are free from Nickel.

 

Platinum No nickel is added.

 

Karat Gold - Pink and yellow gold have no nickel added.

 

White gold routinely has significant nickel content since it is added, but it is possible to make white gold with palladium, instead of adding nickel. Palladium White Gold is more expensive than traditional white gold. Green Woven will not use white gold with nickel in any of our products unless requested.

 

Gold-Filled*- Pink and yellow gold-filled have no nickel added. This is a recent improvement. Traditionally, gold-filled was made with a nickel interleaf. The reason for this was that a layer of nickel would prevent diffusion of the gold into the brass substrate. In recent years improved engineering has allowed the removal of this nickel interleaf. 

 

Silver Traditional sterling (.925), Argentium (.935) and fine silver (.999) have no nickel added.

 

Silver Filled - Silver-filled materials can be manufactured using a brass substrate or a nickel-brass substrate. The nickel-brass substrate gives a white base, while the brass substrate gives a colored substrate. Green Woven will only use silver-filled materials with a brass substrate.

 

All silver-filled sheet and wire used by Green woven has a brass substrate. No nickel is added.

 

Brass All brass Green Woven uses is manufactured to CDA #230 standards. No nickel is added.

 

Bronze All bronze Green Woven uses is manufactured to CDA #521 standards. No nickel is added.

 

Copper All copper Green Woven uses is manufactured to CDA #110 standards. No nickel is added.

 

Titanium & Niobium No nickel is added to either titanium or niobium.

 

*Customers within the European Union: Please be aware that all gold-filled materials sold by Green Woven are in compliance with EU regulation EN1811:2011.