Color and Transmission Spectrum
Gold has an iconic luster and rich color that makes it immediately identifiable. In fact, gold is only ‘gold’ colored when you look at its surface. When gold is manufactured thin enough that light passes through the layer, gold acquires a unique blue-green hue. The distinct blue-green color of ultra thin gold can also be used to precisely measure the presence and amount of gold. Valaurum uses a spectrometer during the manufacturing process to test and measure the spectrum of the transmitted light at both visible and invisible wavelengths within each issue.
Electrical Resistance
Gold has very low electrical resistance, which means electricity can flow through it with relative ease. The thickness of gold also determines how much electricity can flow. Thicker amounts of gold allow more free flow of electricity for a given voltage in the same way that a larger pipe allows more water to flow at a given pressure. Valaurum verifies the amount of gold by testing and measuring the precise electrical resistance in each issue of Aurum®.
Back Image
Each Aurum® is made by precisely depositing gold, atom by atom, onto a printed polyester substrate. This process produces a unique effect on the reverse side of the Aurum®. In unprinted areas the gold holds a high sheen. However, where gold atoms have fallen on the printed artwork the gold acquires a matte finish for a lightly embossed effect. This visual contrast can only be created using specialized deposition equipment and is a patented part of our production process.Serial Number
Individual Aurum® are printed with a unique serial number that guarantees the authenticity of your piece. The placement of serial numbers varies within each Aurum® design and is usually integrated into the overall artwork. To authenticate your Aurum®, contact us to check the serial number and verify that it matches the issue information.