12x7mm Tube bead with 4 small striated rounds - 3 microns Gold plated x1

Tube bead covered with a 16k gold plating with a thickness of 3 microns.
Original, it is decorated on one side by three small striated circles; on the other side, it is topped by a striated circle.

How to recognize the gold plated?
In France, the guarantee mark of the gold plated is not an obligation.
All the same if it is affixed it will be square with different inscriptions inside and often carries the initials of the manufacturer.
French legislation requires a plating thickness of 3 microns of gold to recognize the title of gold plated.
Find gold plated components and finishes to create quality DIY costume jewelry.

What is the 3 micron gold plated?
A gold plated jewel is made using a base metal alloy (depending on the object and its strength) for this ring, its brass covered with gold (between 14 and 16 carats) on a layer of 3 microns minimum.

Details :
Height: 12 mm
Width: 7 mm
Tube diameter: 3 mm
Hole diameter: 1.7 mm

Sold per 1 piece.