Gold Colors, White Yellow, Purple Gold, Black Gold, Blue Gold
From The Worlds Largest Online Provider Of Custom Jewellry And Gems
Gold In Purple Color, Blue Color And Even Black Gold
White gold and yellow gold are the most common types of gold colors used in jewelry making.
But did you know that, various other colors of gold are also available and some of these
colors may surprise you. For example, have you heard of purple gold, or black gold and even
blue gold? It is quite likely that you might have never heard of these gold colors. Here are
the details of the various gold colors used in gold jewelry production in recent times.
However these attractive gold colors have some disadvantages over normal carat gold alloys.
Read this complete report before you make any decision on ordering colored gold jewels.
Yellow Gold And White Gold Are Not The Only Gold Colors Available
In it's natural form gold is yellow in color. By varying the alloying metals we can
get pale yellow or even white gold. This is what most of today's jewelry is made of. However
it is possible to create jewelry with gold of unusual colors like purple gold, blue color gold
and even black color gold.
How Is Purple, Blue, And Black Colored Gold Produced
This is possible by using one of two methods, the first is by formation of special gold
metal compounds also referred to as Intermetallic Compounds. The second process is
by forming a surface coating on gold, also referred to as Patination Of Gold.
Both processes create attractive colors but they do exhibit some disadvantages over normal
carat gold alloys. Purple Gold is also referred to as amethyst or violet gold. The
process to make purple gold is to alloy gold and aluminium in a certain fixed ratio.
Gold content is around 79% and is therefore qualified to be referred to as 18K gold.
Cast pieces of purple gold are sometimes machined and faceted to be used as 'pseudo gems'
in conventional jewellery. Blue Gold is also made as an intermetallic compound between
gold and indium. The gold derives a bluish hue color. Manufacturing techniques are similar to
those for purple gold. Black Gold is today possible using quite a few techniques.
Electrodeposition using black rhodium or ruthenium is one method. Amorphouse carbon is also
used at times, with the Plasma Assisted Chemical Vapour Deposition process. Controlled oxidation
of carat gold containing chromium or cobalt can also be made to yield black gold. Ruthenium
containing, electroplating solutions give a slightly harder black coating as compared to
electroplating solutions that contain rhodium.
Is Colored Gold As Good As Normal Carat Gold
In this context we are referring to gold with colors as purple gold, blue gold and black gold.
All the gold colors mentioned here, have some disadvantages over normal carat gold alloys.
They all tend to be a little brittle, so a sharp blow on a piece of purple gold will most
probably cause it to shatter. Such gold colors also tend to tarnish more easily. For black
coloured gold, the blacker the gold, the less wear resistant it would be. For black gold colors,
electroplating solutions containing ruthenium give a slightly harder coating as compared to
solutions containing rhodium. Rubbing or abrading conditions should be avoided for all these
Are Purple Gold, Black Gold, Blue Gold Etc, Expensive
Going by the other metals used along with carat gold to create colored gold, it does not
seem to be an expensive proposition. However when the involved production techniques are
to be used for single piece orders, the financial feasibility is not very attractive. Single
pieces of jewelry in these gold colors could therefore come with a high price tag. Looking at
it from another point, purple gold, black colored gold, blue gold etc are not as sturdy and
strong as carat gold, the color could also abrase off with time or under certain conditions.
This would in a way add to the overall cost of these colored gold jewels.
Repairs And Modifications To Colored Gold Jewels
Given the fact that very few jewellers actually make purple gold jewelry or jewellery using
black or blue gold, it would be quite difficult to find a jeweller to modify or even
're plate' your colored gold jewelry. Resizing or other repairs would become expensive
even after finding a jeweller willing to take up the task. So make sure that you reflect
on all these issues before ordering colored gold jewelry. This does not refer to white gold
and yellow gold jewellery that is worked on all over the world.
Through this small and yet informative write up, we have tried to answer some of the very
frequently asked questions about colored gold. This information is not meant to provide a
technique for the manufacture of colored gold, but rather explain about the gold and it's
properties. Many of the production processes are patented and this makes it all the more
difficult, to get a jeweller near you to work on jewelry made with colored gold.
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