About Gold

Gold carat
 
There are several carats available for gold. The carat is the gold content of the metal. The carat measures the proportion of pure gold mixed with other metal alloy to make up the final metal.
 
The carat of gold is represented in many countries by the abbreviation ct. Carat can also be called karat, represented by kt or K. The higher the proportion of gold used in the final metal, the more valuable and expensive the metal will be.
 

Gold

- 9ct gold contains 37.5% pure gold (375 parts per thousand parts).
-14ct gold contains 58.5% pre gold (585 parts per thousand parts).
-18ct gold contains 75% pure gold (750 parts per thousand parts).
The remainder of the metals is made up of a combination of alloys.
 
Jewellery is normally stamped with a marking to show the type of gold.
-  9ct gold the stamp will normally be either the number 375, 9ct, 9kt or 9K.
- 14ct gold the stamp will normally be either the number 585, 14ct, 14kt or 14K.
- 18ct gold the stamp will normally be either the number 750, 18ct, 18kt or 18K.
 
9ct, 14ct and 18ct gold are each relatively hard and durable metals and are suitable for use in all types of fine jewellery. Gold is also suitable to be used in jewellery that is worn on an every day basis. When choosing jewellery, particularly rings, many people consider the hardness and durability of gold to be used in their ring.
 
Metal hardness is measured by what is called the Vickers scale where harder metals receive a higher Vickers score than less hard metals.
9ct has a Vickers hardness of 120 and 18ct has a Vickers hardness of 125. This shows 18ct as harder, but the difference is so slight that in practical terms 9ct and 18ct are much the same in terms of hardness.
 
 
Gold colors
 
Gold is available in several different colors yellow, white and rose.  Jewellery can also be made using a combination of different gold colours. These jewellery items are sometimes called two-tone, three-tone or multi-coloured gold.
 
The gold content of yellow gold is measured in the same way it is measured in for example white gold. So an 18ct white gold ring contains 75% pure gold, just as 18ct yellow gold contains 75% pure gold.
 
The difference in colour between yellow, white and rose is determined by the metals used in the alloy mix.
As the colour difference is due to the metal components in the alloy mix, the colour of yellow gold and rose gold will not chip, fade or wear off with age.
-Yellow gold is made by mixing pure gold with alloy metals such as copper and zinc.
-Rose gold is made using a mix of pure gold with alloys including copper. The copper provides the rose-reddish color.
-White gold is an alloy of gold and some white metals such as silver and palladium.
 

WHITE GOLD

Traditionally nickel was used in white gold, however, nickel is no longer used in most white gold made today as nickel can cause reactions with some people. We do not use nickel in our white gold.
 
When white gold rings are new they can be coated with another white metal called Rhodium. Rhodium is a metal very similar to platinum and rhodium shares many of the properties of platinum including its white colour.
The rhodium plating is used to make the white gold look more white. The natural color of white gold is actually a light grey color. The rhodium is very white and very hard, but it does wear away eventually. To keep a white gold ring looking its best it should be re-rhodium plated approximately each 12 to 18 months.
 
White gold is an alloy of gold and some white metals such as silver and palladium. White gold can be 18ct, 14ct, 9ct or any carat. For example, 18ct yellow gold is made by mixing 75% gold (750 parts per thousand) with 25% (250 parts per thousand) other metals such as copper and zinc. 18ct white gold is made by mixing 75% gold with 25% other metals such as silver and palladium. So the amount of gold is the same but the alloy is different.
 
 
Is White gold the same as Platinum?
 
The answer to this question is no. White gold and platinum have their own properties which make them unique.
 
 

Platinum

Platinum is a white metal, but unlike gold it is used in jewellery in almost its pure form (approximately 95% pure). Platinum is extremely long wearing and is very white, so it does not need to be Rhodium plated like white gold. Platinum is very dense (heavy), so a platinum ring will feel heavier than an 18ct gold ring.
A platinum ring will be approximately twice the price of an 18ct white gold ring.

Palladium

Palladium is a white metal which is has a silver-grey-white colour and is similar to platinum. Palladium is one of the metals that are part of the platinum group of metals. The platinum group metals share similar chemical properties.
 

Silver

Sterling silver is a white-grey coloured metal which is less expensive than gold, platinum and titanium.
Silver is a softer metal than gold, titanium and platinum and does not have hardness that the other metals do.
Silver is also more prone to oxidization, sometimes causing the silver to turn black. The silver jewellery can easily be made to look like new again if you use a silver jewellery cleaner (available from most department stores) or if you have your jewellery cleaned by a local jeweller.
Silver is a popular metal for use in jewellery such as earrings, pendants, bracelets, necklaces and dress rings. It is best used for jewellery that will not be worn every day for an extended period. For that reason it is usually not recommend to be chosen for ladies and men's wedding rings, and is not suitable for ladies engagement rings.
 
 

Titanium

Titanium is a natural element which has a silver-greyish-white colour. Titanium is the hardest natural metal in the world. It is very strong, three times the strength of steel and much stronger than gold, silver and platinum and yet is very light weight. Pure titanium is also 100% hypo-allergenic which means that it if safe for anyone to wear as it will not react to your skin.
Titanium provides several unique factors that make it a good metal for jewellery. It is very strong, more dent, bend and scratch resistant than gold, silver and platinum, is lightweight. Please consider with titanium is that titanium cannot be soldered, which means that titanium rings cannot normally be resized.
Titanium rings made using pure titanium can normally be cut-off the finger in the event of an emergency.
 
Stainless steel
 
Stainless steel is a metal not traditionally used in fine jewellery, but more so in dress jewellery.
Stainless steel is a relatively hard and durable metal. It is particularly popular in men's bracelets, necklaces and men's dress rings.