K-Gold Brush Plating Solution

£55.44£1,177.48 + VAT

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Our K-Gold contains 12 grams of gold per litre. It should mainly be used as a base solution for mixing with our full range of coloured gold mixers. You can use K-Gold to create a range of coloured gold plating solutions that are popular in jewellery making.

Please refer to our Coloured Gold Mixing Calculator for guidance and click on the blue tabs above for more information.

Click HERE to see our Coloured Gold Mixing Kit which includes a bottle of our K-Gold and all the other things you need for creating the full range of coloured gold shades.

Completely cyanide free. Recommended electrode – Carbon

Please note: This is an air-sensitive solution. When not in use, keep the lid tightly shut and take measures to minimise the air space remaining in the bottle. These can include adding marbles or glass beads to the bottle or squeezing out the excess air at the top of the bottle. You can also store the solution in one of our storage syringes that are available on the online shop. Please click HERE to purchase.
Failure to observe the above precautions will result in the degeneration of the gold in the solution.
Please click on the ‘Examples’ tab above for guidance on how to minimise air contamination.


HS Code: 3824 99 70

Our K-Gold is the main part of our coloured metal mixing system. This photograph shows the range of commonly used alloys and shades of gold that are used in the jewellery trade and that can be created with our mixing system. Please refer to our Coloured Gold Mixing Calculator to find the ratios of K-Gold and mixing solutions that will create your preferred shade/alloy of gold.

Please click on the blue tab marked ‘Process Sequences’ above to see full technical details of the shades shown, from 1. 9kt Whitish gold to 15. 23kt Yellow Gold

K-Gold can be mixed with Rose Gold Mixer and Green Gold Mixer to create a wide range of rose, red, yellow and white gold plating solution alloys.

With our coloured metal mixing system, it’s possible to match a wide range of karats and shades of gold.

The solid gold detail on this silver pendant was matched with an 18 karat green gold swatch, created with our mixing system. With the karat and shade of the gold established, our Coloured Gold Mixing Calculator was used to work out the ratios of K-Gold Brush Plating Solution and the relevant mixers to mix an 18 karat green gold brush plating solution. This was then used to brush plate matching green gold details throughout the rest of the pendant.


Back to Product Description
Features Used for
Designed mainly as a base solution for mixing with our Coloured Gold Mixers Mixing with Yellow, White, Rose, and Green Gold Mixers and Brass Effect Gold Mixer.
Can be mixed with 2 or more Gold Mixers Creating a huge spectrum of different shades and tints of gold – good for exactly matching colour of original gold plated layer.
Can be plated on its own, forming a soft, 24 carat gold layer, completely cyanide free Mainly functional purposes only. Plate dulls over 0.2 microns but can be burnished to reveal a mirror finish.


Please refer How To Use This Calculator below

How to use this calculator :

1. In the first box, enter the shade and karat value of gold that you wish to mix.

2. In the second box, choose whether you wish to measure the components of the mixture by volume(V) or by weight (W).

3. In the third box, enter the volume or weight of K-Gold that you wish to mix.

4. Press the ‘Calculate’ button.

5. Read off the amount of mixers to add to your chosen amount of K-Gold.

Notes :

For the Short Swab on a Carbon Electrode, set rectifier to 2.5 volts.

For the Extra Fluffy Swab on a Carbon Electrode, set the rectifier to 3.0 volts.

For the Pointed Nib attached to the Carbon Pen Electrode, set rectifier to 2.7 volts.

Always use a new or nearly new swab for this process.

Use the plating solution within 1 hour of mixing.

When plating on to stainless steel, nickel and its alloys, plate a gold flash layer first.

Operating Conditions and Deposit Data

Voltage Range Refer to data on label of Coloured Metal Mixer bottle in question. If being used as a stand alone solution – 2 volts
Temperature 20 – 25 °C
Gold Concentration 12 g/l
Electrode Carbon
Gold content in plate 99.9 – 100%
Plating Rate at (3.5 volts, Platinum electrode) Approx. 0.3 micron per minute (spot)
Hardness 170 – 180 Hv
Density of deposit 19.0 g/cm3
Stress Low stress
Special storage requirements Away from sunlight
Shelf life Over 2 years
Health and Safety classification Irritant
Special considerations None
Transport (UN number) None: Not classified as dangerous for transport



  • Plate dulls after 0.2 microns.
  • Coating can be burnished to mirror finish.
  • We strongly advise against the use of stainless steel anodes for most of our plating processes.
  • Plating rates are calculated over a sample area whilst in contact with the swab.

General guide;

Certain small items, for example Swabs, Nibs and Plating Pens can be sent by normal post within the UK

  • The courier option for UK deliveries is FedEx
  • Free UK mainland delivery available on orders over £200
  • International orders usually 3-5 working days.

For all price quotations for deliveries, please add your items to our shopping cart. You will be able to see the shipping costs by clicking on the ‘Calculate shipping’ button in the cart and before checking out.

Please click on the link below to download the SDS for this product:


Shades of commonly used karats of gold created with our Coloured Metal Mixers

and K-Gold system.

Here’s a photo showing the shades of gold achievable using our coloured metal mixer system. Each swatch is numbered and corresponds to the swatch listed in the table following, which details the various quantities of mixer you need to create your desired shade and karatage of gold.

You can use these mixtures as guides or you can create your own unique shades.

Use our Coloured Gold Mixing Calculator to select the correct mixture of K-Gold, Rose Gold Mixer and Green Gold Mixer.

To achieve these shades you will need to use either a Carbon Electrode or Carbon Pen

Shade/Colour Karatage Volume of K-Gold (ml) Volume of Rose Gold Mixer (ml) Volume of Green Gold Mixer (ml) Plating rate – spot (micron/min) Comments Approximate content of
alloy (percent)

1. 9kt Whitish gold
9 5 0 3.1 2.8 Plates bright up to 0.2 micron.
See note 3.
Gold: 38
Silver: 62

2. 9k Yellow Gold
9 5 0.8 1.0 1.5 Plates bright up to 1 micron. Gold: 38
Silver: 44
Copper: 18

3. 9kt Rose Gold
9 5 1 0.3 1.3 Fully bright coating. Tarnishes quickly. Gold: 38
Silver: 18
Copper: 44

4. 9kt Red Gold
9 5 1.1 0 1.2 Fully bright. Tarnishes quickly. Gold: 38
Copper: 62

5. 14kt Pale Green Gold
9 5 0 1.7 2.2 Plates bright up to 0.2 microns. See note 3. Gold: 58
Silver: 42

6. 14kt Yellow Gold
14 5 0.5 0.5 1.2 Plates bright up to 1 micron. See note 3. Gold: 58
Silver: 21
Copper: 21

7. 14kt Rose Gold
14 5 0.55 0.15 1.4 Plates bright up to 1 micron. Gold:58
Silver: 9
Copper: 33

8. 14kt Red Gold
14 5 0.8 0 1.9 Fully bright coating. Gold: 58
Copper: 42

9. 18kt Green Gold
18 5 0 0.8 1.6 Plates bright up to 0.2 micron. See note 3. Gold: 75
Silver: 25

10. 18kt Yellow Gold
18 5 0.25 0.4 1.7 Plates bright up to 0.5 micron. See note 3 Gold: 75
Silver: 14
Copper: 11

11. 18kt Rose Gold
18 5 0.35 0.15 1.6 Fully bright coating. Gold: 76
Silver: 5
Copper: 19

12. 18kt Red Gold
18 5 0.45 0 1.4 Fully bright coating. Gold: 75
Copper: 25

13. 22kt Rose Gold
22 5 0.15 0 1.4 Plates bright up to 0.2 micron. Gold: 90
Copper: 10

14. 23kt Rose Gold
23 5 0.05 0 1.5 Plates bright up to 0.2 micron Gold: 96
Copper: 4

15. 23kt Yellow Gold
23 5 0 0.1 1.3 Plates bright up to 0.2 micron. Gold: 96


  1. Gold flash or gold strike required if plating any of the above coatings on stainless steel.
  2. We recommend that dull coatings are polished with the Silver and Gold Cloth or for
    coatings in excess of 3 microns, with Autosol followed by Silver and Gold Cloth.
  3. If plating on nickel, a gold flash is recommended.
  4. Gold content (karat value) of the plate increases with increasing voltage.
  5. In mixes that contain both Rose and Green Gold Mixer, the red hue increases with increasing
    voltage. The green hue increases with decreasing voltage.
  6. Ensure the swab is fully saturated with some excess remaining in the beaker prior to commencing plating.
  7. As an example of how quickly gold alloys plate with our K-Gold system, a sterling silver wedding band
    can be plated to 3.3 microns (Vermeil for 18 karat gold) in approximately 12 minutes with 18 karat rose gold.