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Diamond Certificate
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A diamond certificate is an overall report of all the important characteristics of the diamond being examined by independent gemologist / laboratory.

The purpose of a certificate is to help a layman understand the complex diamond specification in a simpler format and able to compare the same with other qualities.

At DiamondsnDiamonds we follow a strict certification program as mentioned below.

Diamonds above 0.30 ct.wt. are certified by GIA/ IGI / HRD / EGL, any one of these internationally recognized independent laboratories. Multi stone jewellery is certified by our in-house GIA certified gemologist known as DiamondsnDiamonds certificate and if requested can also be certified by anyone of these independent Labs EGL / IGI / DGLA. Multi Stone Jewellery can only be certified by EGL / IGI / DGLA as other labs don't offer jewellery certification. This is a standard practice throughout the industry; in fact many jewellers don't provide any certificate for multi stone jewellery.

If you have any queries please feel to call us on 0800 048 0178 for more details.
Multi Stone Jewellery Certificate - Sample**
**This certificate images are sample of one of the lab out of possible labs. It may be other labs mentioned here which will have different format and design of certificate.
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Gold Education
Home > Gold Education
Gold won't tarnish, rust, or corrode, and though it's very strong, it is also the most malleable of all metals
Purity
Pure gold is too soft to withstand the stresses of daily wear, so it is alloyed with a mixture of metals like silver, copper, palladium, and zinc to give it strength and durability. Karatage indicates purity and is noted by a number followed by the letter "k". 24 karat represents 100 percent gold; 18 karat has 75 percent gold, and 9 karat has 37.5 percent gold.
Hallmarks
There are three compulsory hallmarks applied to precious metals as a quality control: a sponsor's (maker's) mark, a fineness mark, and an assay office mark. These marks establish the origin and fineness of the precious metal and ensures it has been accurately and independently tested.
Colour
The colour of gold is determined by two factors:
The type of metal alloys included in it
The percentage of each metal alloy
Yellow Gold
Our 18k Yellow gold is composed of 75% of pure gold, alloyed with 25% other metals. Not only does this make the piece more valuable, it makes it strong enough to withstand daily wear while maintaining its traditional, rich golden colour.
White Gold
18k white gold is 75% of pure gold, alloyed with 25% white metals to produce a white metal with a slight yellow colour. To enhance the whiteness, almost all white gold is plated with rhodium, an extremely hard and shiny white metal in the platinum group. Depending on the amount of wear to a piece of jewellery, over time this rhodium plating may wear off, revealing the original metal colour. Re-plating is a simple process that can be done to restore your jewellery's whiteness if needed.
How many karats?
24 karat = 100% gold
Too soft for jewellery
22 karat = 91.7% gold
Very soft — not recommended for jewellery
18 karat = 75.0% gold
Recommended for fine jewellery
14 karat = 58.3% gold
Recommended for jewellery
12 karat = 50.0% gold
Not used in Diamonds n Diamonds jewellery
9 karat = 37.5% gold
This is the minimum standard in the UK. This is used for heavy jewellery to reduce the cost.
All our Jewellery is hallmarked
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