Pure gold (fine gold) is softer than pure silver
but
harder than tin. Its beauty and luster are
unmatched by any alloyed gold. The extreme
malleability, ductility, and softness of pure gold
make it practically useless for jewelry
applications.
The addition of alloying elements (other metals)
to
gold are used to increase the toughness and
hardness of the metal. While almost any metal
can
be alloyed (melted) with gold, only a select
group
of metals will not dramatically change the color
or
make the metal brittle. For example, we never
mix
indium with gold because it turns gold purple
and
gives gold the workability of glass.
What is a Karat ?
Over time, certain percentages of gold have
become legally recognized "karats." The karat
indicates the amount of gold as a percentage of
the
total, i.e. 24 karat is 100 percent gold. In karated
gold, there is a balance of metals in the non-
gold
percentage called alloys. These metals provide
the
various colors and hardness of karated gold. 18
karat gold is 18 parts gold and 6 parts alloys
such
as copper, nickel, silver or zinc. 14 karat gold is
14 parts gold and 10 parts alloy. Gold standards
vary around the world. In the United States, 18,
14,
and 10 karat gold are the only karats allowed to
be
sold as karated gold.
What is the difference between 14 karat and 18
karat gold?
18 karat gold means that the metal is 18 parts
out
of 24 pure gold, or in other words, 75% pure
gold.
18 karat gold is the standard for European
jewelry.
14 karat gold is 14 parts gold, or 58.5% pure
gold.
It is the standard for American jewelry.
What is used to change the color of gold?
The addition of alloying elements (other metals)
to
gold are used to increase the toughness and
hardness of the metal, as well as change the
color.
Adjusting the proportions of coloring agents
provides the array of colors on the market.
Additional metals enhance properties such as
castability, grain size, hardness, corrosion
resistance, color, workability, ultimate strength,
and
others. These additions can dramatically change
the properties of the karated metal for better or
worse. For example: 18 karat rose gold is 75%,
or
18 parts fine gold and 25%, or 6 parts copper. It
is
the rich red copper combined with the pure
yellow
gold that creates a warm rosy tone. 14 karat
white
gold is 14 parts gold and 10 parts white metal,
either nickel or palladium. These white metals
dominate the color, creating a warm gray tone.
Typical alloying elements and their color effect :
Copper - Reddening
Silver - Greening
Zinc - Bleaching
Nickel - Whitening
Palladium - Whitening
Examples of the compositions of different colors
are:
Yellow Gold: copper, silver, zinc
White Gold: nickel, manganese, palladium, zinc,
copper
Red (Rose) Gold: copper
Green Gold: silver
What is the difference between a carat and a
karat?
A carat is a unit of weight for gemstones, where
one carat equals 1/5 of a gram, or 200
milligrams.
142 carats equals one ounce.
Carats are divided into 100 units, called points .
For example, a half-carat gemstone would
weigh .50 carats or 50 points. The important
thing
to note is that carat is a unit of weight, not a unit
of size. A one carat stone that is dense will be
smaller than a one carat stone that is less dense.
For example, sapphires are denser than
diamonds,
so a one carat sapphire will be smaller than a
one
carat diamond.
A karat is not a unit of weight. The word karat
refers to the amount of gold in a particular item.
Karats are measured in units of 24, where 24
karat
gold is pure gold. 18 karat gold is 18 parts gold
and 6 parts alloys such as copper, nickel, silver
or
zinc. 14 karat gold is 14 parts gold and 10 parts
alloy.

Mi like your post.

ammyluv2002: Mi like your post.

girls and bling!

A very insightful golden article..


I learnt a new thing, especially that karat and carat differences..

Thank you

Informative thread I must say! Just take a little time n read it,u will learn few things about GOLD.




Nice one @OP

Smartsyn: A very insightful golden article..


I learnt a new thing, especially that karat and carat differences..

Thank you

Yea u are right!

i don learn sontin today. op una well don

Abeg how many karat gold na d wold cup?dnt tell me 18

The sequencing trophy, called "FIFA World Cup
Trophy", was introduced in 1974 . Made of 18 carat
gold with a malachite base, it depicts two human
figures holding up the Earth....

am happy to see u all Reading and Gaining one or two lessons... no Knowledge is lost.

@op, facts depicited that the world cup have about 72-76 karats of gold. Then does it mean by the standard of your estimation that 24 karats of gold which has been legally accepted as the standard is more purer, refined, and greater than that of the world cup? Need more insightful explaination, no offence intended.

Kendzyma: Abeg how many karat gold na d wold cup?dnt tell me 18

Yeah, they said it yesterday

Mind u,there's a diff between 18k electroplated gold and 18k gold........so if the world cup is 18k gold,why not think of its "carat" u can make more than 30rolexs with it.

yeah... it is more purer than the World cup...Arguably 75% gold and 25% metal

Shame on d world cup then........ Nice post! I learnt. Na b ay all dis necklace wey person dey buy na like 0.0005 karat o + is silver whitenned gold

16 bars of grade A Gold for sale.

Very educative,more reasons I love NL.

Andyblaze: I love gold jewels

of all people..

alabig: @op, facts depicited that the world cup have about 72-76 karats of gold. Then does it mean by the standard of your estimation that 24 karats of gold which has been legally accepted as the standard is more purer, refined, and greater than that of the world cup? Need more insightful explaination, no offence intended.

There is nothing like 72-76 karat gold. The highest you can get is 24 karat which is pure gold.
op you can also have 22 karat gold. Then the locally-made gold varies depending on how much gold the goldsmith puts in to the jewellery.

Kendzyma: Abeg how many karat gold na d wold cup?dnt tell me 18

It is 18! Oya, wetin you wan do?

Andyblaze: I love gold jewels

Ehn ehn? Ok.

Lovely..

So there is a difference between karat and carat? Nice one op

nice...now i know

alabig: @op, facts depicited that the world cup have about 72-76 karats of gold. Then does it mean by the standard of your estimation that 24 karats of gold which has been legally accepted as the standard is more purer, refined, and greater than that of the world cup? Need more insightful explaination, no offence intended.

/Nothing like 72-76 karats of gold... The world cup has 24 karats...

www.en.wikipedia.org/wiki/FIFA_World_Cup_Trophy
18 karat gold.

It is good to be informed, some layman still interchange d word carat wit karat
#Op, u get mouth

It is good to be informed, some layman still interchange d word carat wit karat wit their meanings
#Op, u get mouth

I truly learnt new thing today. regarding GOLD I had never knew the difference in karat until today. bless.

Oguntimmy: /Nothing like 72-76 karats of gold... The world cup has 24 karats...

the world cup is 18 karat GOLD! it was said on S's on super after the match!

@op nice post and really informative

but, pls try to make it more enjoyable to read and less congested next time. thanks