Question 1

Why has the color of the bottle changed from clear to blue? And why can't I see the rose gold color?

Accepted Answer

Hi Amazon Customer,

Thank you for your question. Shortly after Secret Gold was launched we switched to cobalt blue glass bottles to protect the gold from light.

Regarding the color, this is a typical issue with colloidal gold and a reason for many of the negative reviews from customers.

When we make a batch of gold in a 2,000 ml beaker, it is vibrant ruby red with rose gold hues. In gold's unique light refracting ways, when the liquid volume is reduced, the color gets lighter. For instance, when we pour the same gold from the 2,000 ml beaker and fill a 500 ml beaker, the color becomes much lighter. The color shift is even more pronounced when it's put into a 60ml bottle for sale. And, in the 1 ml dropper it's dramatically lighter.

Gold nano particles absorb and scatter light resulting in colors ranging from vibrant reds (smaller particles) to blues to black and finally to clear and colorless (larger particles), depending on particle size, shape, local refractive index, and aggregation state. These colors occur because of a phenomenon called localized surface plasmon resonance (LSPR), in which conduction electrons on the surface of the nano particle oscillate in resonance with incident light.

To test if the gold is still good, we recommend putting the filled dropper up against a white piece of paper in good lighting. It should have some faint color. And/or pour some into a small WHITE bowl. If after the small white bowl the product is still clear, then it has gone bad likely due to improper handling/exposure.

Gold atoms broken apart are light and temperature sensitive and very unstable. The many environments (warehouse, trucks, airplanes, outside porch) a bottle of gold is exposed to can potentially ruin it. Somewhere along the warehouse-delivery chain (which we have no control over), the gold could be exposed to cold temperatures causing it to fall out of suspension and recombine.

When this happens the gold will begin to lose it's color and may even turn completely clear. If it still has color and/or a few precipitates, it is still good. If it has gone completely clear, it is no longer stable and no longer usable.

When the gold falls out of solution, it is called precipitation, and when it recombines it is called aggregation. At times small clumps can be found at the bottom of the bottle that alarm some people. What they are seeing is called gold precipitates. They appear dark because in gold's unique ways, it refracts (bends) the light that way.

In addition, the gold may try to aggregate back together and it will look like dark string filaments. It is often confused for some kind of contamination, but it is not the case. They are known as gold precipitate filaments (agglomeration) and they may look fractal patterned. Particle agglomeration is when particles dispersed in the liquid phase stick to each other, and spontaneously form irregular particle agglomerates. When gold nano particles aggregate, the optical properties of the particle change. Stabilized mono dispersed state 33 nm colloidal gold nano particles appear red in color, while in a precipitated state the particles appear black.

If you suspect your bottle is bad, we highly suggest you email us directly about the issue and we'll immediately send you a replacement bottle at no charge, and you can throw away the affected bottle. Amazon will require you to return the bottle, we will not. Our direct email address can be found on the package insert.

We hope this fully answers your question. We also hope this resolves any hesitation with our product due to customer reviews. Unfortunately, Amazon does not let sellers respond to reviews. Thereby, making us voiceless to clarify any issues and resolve any confusion.

Please, do not hesitate to reach out to us again with any further questions. You can also find more information about Secret Gold at our website. You can find it by google searching our company name.

With care,

FireWaterStar

Question 2

What’s the little dropper bottle for that came in the package?

Accepted Answer

Hi Amazon Customer,

Thank you for your question.

The little dropper bottle referenced was a free half ounce bottle of the same colloidal gold that we included in some of the Secret Gold packages, when we first launced the product. It is no longer found in any of the packages of Secret Gold.

We hope this fully answers your question.

Please, do not hesitate to reach out to us again with any further questions.

With care,

FireWaterStar

Question 3

I just got a shipment and normally it’s pink but this time it is clear and has black things floating in it. I just want to know if that is normal?

Accepted Answer

Hi Amazon Customer,

Thank you for your question. The answer is yes and no. The color and occasional dark particles is a common issue with colloidal gold and a reason for many of the negative reviews from customers. Please read the following...