Model wearing 18K gold filled hoop earrings
18K gold filled hoop earrings on Gold Theory packaging

From material details to styling inspiration and everything in between, The Theory is where we share the know-how behind jewelry.

The Theory

What Is
18K Gold Filled Jewelry?

Model putting on a gold filled hoop earring

How to Clean
Gold Filled Jewelry.

Model wearing 18K gold filled earrings

Is Gold Filled Jewelry
Real Gold?

Gold filled hoop earrings displayed on Gold Theory packaging

Gold Filled vs. Vermeil:
What’s the Difference?

Gold hoop earrings displayed on a textured surface

How Long Will Gold Filled
Jewelry Last?

Pair of gold filled hoop earrings

What Are the Cons
of Gold Filled Jewelry?

Model wearing gold filled hoop earrings

Will Gold Filled Jewelry
Turn Green?

Model wearing gold filled hoop earrings

Does Gold Filled Jewelry
Tarnish?