Invisible Spring Hinge Clasp in 18K Red Gold 5N - Flat Tube

The elegance of flat design. This invisible clasp It is distinguished by its flat profile and its perfectly integrated hinge and spring mechanism. Made of Made of 18 Carat Red Gold (5N color) , it offers a modern finish and a continuous line to your jewelry, without any protruding pieces.

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The Flat Clasp for a Contemporary Style

Are you looking for a gold necklace clasp Modern and distinctive? The invisible flat-section model is the choice of designers for geometric chains or structured bracelets.
Unlike the round tube, this flat clasp offers a smooth surface that captures light differently, adding an extra touch of sophistication.

Why choose this red gold clasp?

• Flat Design: Its rectangular section integrates perfectly with flat links (gourmettes, mirror links) or creates an interesting contrast with round links.

• Invisible Mechanism: The spring mechanism is hidden inside. Once closed, the ring is perfect. Ideal as gold bracelet clasp .

• Single Color 5N: 18k red gold (more intense than rose gold) enhances the skin and adds character to your creations.

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Size Guide: Which diameter should I choose?

For perfect integration, choose the diameter that matches the size of your links.

1. Small Model (Ø 9.90 mm)

• Diameter : Outer diameter 9.90 mm / Inner diameter 6.20 mm / Flat tube with a diameter of 1.85 mm

• Weight : ~ 1.38 g

• Usage: Fine chains, delicate bracelets.

2. Intermediate Model (Ø 12.20 mm)

• Diameter : Outer diameter 12.20 mm / Inner diameter 7.60 mm / Flat tube with a diameter of 2.30 mm

• Weight : ~ 1.89 g

• Usage: The versatile standard for most of gold women's necklaces .

3. Large Model (Ø 13.50 mm )

• Diameter : Outer diameter 13.50 mm / Inner diameter 8.30 mm / Flat tube with a diameter of 2.50 mm

• Weight : ~ 2.22 g

• Usage: Thick chains, heavy bracelets, solid gold clasp of character.

(Select the size from the drop-down menu)

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Tutorial: How to use this invisible clasp?

It is simple and secure to use:

1. Exercise a pressure inwards on the moving part of the clasp.

2. THE spring It compresses and opens the ring thanks to the hinge.

3. Slide on your link or charm.

4. Release: the mechanism locks automatically, recreating the perfect circle.

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Technical Specifications

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FAQ - Frequently Asked Questions

Is this flat clasp comfortable?

Yes, its flat surface rests perfectly on the skin, making it an excellent Gold clasp for bracelet . It doesn't rotate and doesn't get in the way.

What is the difference between Rose Gold and Red Gold (5N)?

Red gold composition It contains more copper than standard rose gold (4N). This gives it a warmer, richer hue. It's the color red gold jewelry trendy, ideal for contemporary creations.

Can it be used as a charm holder?

Absolutely. Its flat shape and easy opening make it an excellent connector for adding charms to a chain or bracelet, without the need for soldering.