On a gold bracelet, "GF" stands for "gold-filled." This marking indicates that the jewelry piece is crafted with a substantial layer of real gold bonded to a base metal, offering a durable and high-quality alternative to solid gold.
Understanding Gold-Filled (GF)
Gold-filled jewelry is made by mechanically bonding a thick layer of solid gold to a base metal, usually brass or sterling silver, using heat and pressure. Unlike gold-plated (GP) items, which have a microscopic layer of gold, gold-filled pieces contain a significantly higher percentage of gold.
Key Characteristics of Gold-Filled Jewelry
- Gold Content: For an item to be considered gold-filled, the gold layer must constitute at least 5% (or 1/20th) of the item's total weight. This is a much thicker layer than gold plating, which is typically less than 0.05% gold by weight.
- Durability: Due to its thick gold layer, gold-filled jewelry is considerably more durable and resistant to tarnish and wear than gold-plated items. It can withstand daily wear and tear for many years without the gold flaking off.
- Hypoallergenic Properties: Because the outer layer is genuine gold, gold-filled jewelry is often a more suitable option for individuals with sensitive skin or allergies to common base metals, as the gold acts as a barrier.
- Appearance: Gold-filled items closely resemble solid gold in appearance, offering the same luster and color without the higher cost.
Common GF Markings
When you see "GF" on a gold bracelet, it's often accompanied by other markings that specify the karatage and the proportion of gold used.
Here are the most common ways "GF" is marked:
- Karat Number and GF: This indicates the purity of the gold layer followed by the "GF" designation.
- Example:
14K GF
means the outer layer is 14-karat gold-filled.
- Example:
- Fraction, Karat, and GF: This marking explicitly states the proportion of gold by weight, along with the karatage of that gold.
- Example:
1/20 12K GF
signifies that 1/20th (or 5%) of the item's weight is 12-karat gold, and it is gold-filled.
- Example:
Why Choose Gold-Filled?
Gold-filled jewelry offers an excellent balance of quality, aesthetics, and affordability. It provides the luxurious look and feel of solid gold at a fraction of the price, making it a popular choice for everyday wear and fashion accessories. Its superior durability and hypoallergenic nature also contribute to its widespread appeal.