Jewelry factories reduce PVD gold color variation by using an approved physical color sample, a fixed color board and recorded process settings, then keeping an order in one plating batch whenever possible. If Jinming must split an order between plating batches, the equipment parameters are set to the same recorded values to reduce—not guarantee the complete elimination of—color difference.
What is the color reference for production?
Before gold-tone production, Jinming uses the approved physical color sample together with the data recorded in the order. Terms such as 14K, 18K and 24K color refer to a fixed color board rather than an informal name chosen by the plating operator.
Does coating thickness define the final gold color?
No. Thickness is one production specification, but it does not fully define the final appearance. At Jinming, coating thickness is discussed with the buyer before production, disclosed to the buyer and recorded in the purchase contract after approval. The stated thickness represents the total coating thickness.
Why is one plating batch preferable?
Keeping the order in one plating batch reduces the number of process changes that can create visible variation. When a split is unavoidable, repeating the recorded machine parameters gives the factory a better basis for matching. Surface preparation and polishing also matter, which is why the polishing stage is checked before plating proceeds.
How is the finished color accepted?
Jinming visually compares production with the approved color sample. Buyers who need a very narrow numerical color tolerance should define the light source, viewing geometry and instrument method in advance rather than assuming that a phrase such as “18K gold” is sufficient.
Frequently asked questions
Does thicker PVD coating always produce a better gold color?
No. Final appearance also depends on the approved color reference, surface preparation, coating structure and process settings.
What do 14K, 18K and 24K color mean at Jinming?
They are matched to a fixed color board used as the production reference.
Does the quoted thickness mean one layer or all layers?
Jinming states the agreed figure as total coating thickness.
Can split plating batches look exactly identical?
Matching recorded equipment parameters reduces variation, but the factory should not promise zero visible difference without a defined measurement method and tolerance.