Composition:

Gold-Filled Jewellery: Gold-filled jewellery is made by permanently bonding two layers of gold onto a base metal (usually brass) using heat and pressure.
The gold in gold-filled jewellery is 20 times thicker than in gold vermeil/plated jewellery, making it significantly more durable and longer lasting.

Gold Vermeil Jewellery: Gold vermeil jewellery consists of a sterling silver base that is plated with a microscopic layer of gold. The gold layer in vermeil jewellery is usually at least 10 karats and 2.5 microns (0.002mm) thick.

Durability:

Gold-Filled Jewellery: Because of its thick layers of gold, gold-filled jewellery is significantly more durable and resistant to tarnishing and wear compared to gold-plated or vermeil jewellery. It can last for many years with proper care.

Gold Vermeil Jewellery: While gold vermeil jewellery offers a thicker layer of gold compared to most plated jewelry, it is still not as durable as gold-filled jewellery, since the underlying sterling silver base will inevitably tarnish over time

Gold-filled jewellery is more durable and resistant to tarnishing and wear.

Price:

Gold-Filled Jewellery: Gold-filled jewellery tends to be more expensive than gold vermeil jewellery due to its higher gold content and durability.

Gold Vermeil Jewellery: Gold vermeil jewellery is typically more affordable than gold-filled jewellery but offers a similar appearance, albeit temporarily. If a plated product is of a higher price, this is due to the effect of strategic marketing.

Gold vermeil jewellery offers a similar appearance, albeit temporarily.

Care:

Gold-Filled Jewellery: Gold-filled jewellery can be worn daily and cleaned with mild soap and water or a jewellery polishing cloth. Avoid using abrasive cleaners or brushes that can scratch the surface.

Gold Vermeil Jewellery: Gold vermeil jewellery should be cleaned extremely gently with a very soft, damp cloth to avoid scratching the thin gold layer off. Avoid using harsh chemicals or polishing compounds that can strip away the gold plating. The plating on gold vermeil jewellery generally wears off within 6-12 months, with normal wear.