Diamond Checking

How will You Know You are Buying a Real Diamond?

Due to their attractive, durable and rare qualities, precious gems have a great ability to attract people. Even though there is a wide range of precious stones, four out of all of them have the most important place in the gem market: diamond, ruby, sapphire and emerald – and out of those four, the natural real diamond is the most precious.

Some natural real diamond simulants, that are present in nature and are not artificially produced, are rather rare. The most popular diamond simulants are Colourless Zircon, Colourless Topaz and White Beryl. Extracting and producing these diamond simulants on a large scale is inconceivable because many inclusions are present in them. Most of the diamond simulants available in the market are artificial.

The most ancient artificial simulants of diamond is glass. It has been used as “fake diamond” since the 16th century. The Colourless Artificial Sapphire (named as Diamondite in the market) and Spinel were introduced in the market in the 1900s, after these, a number of artificial simulants also began to appear in the market.

White Zircon
White Zircon - courtesy of AJS Gems
White Beryl
White Beryl - courtesy of AJS Gems
White Topaz
White Topaz - courtesy of Princess Gemstones

What are Diamond Simulants, and how are laboratory-grown diamonds different?

Diamond simulants are such materials or minerals which exhibit some qualities that are similar to those of the diamond. These simulants might appear to seem like diamonds but in reality are not diamonds. Their physical, chemical and optical qualities differ from those of the diamond. The dissimilar properties of these two enable them to be differentiated.

Laboratory-grown diamonds are not produced in nature but instead are prepared in the laboratory through a technical process. Mainly their qualities, be it physical, chemical or optical, are similar to natural diamonds.

How to Make Sure of the Authenticity of a Stone?

If you want to buy an authentic diamond then getting help from a professional diamond consultant is the best and simplest option. Contact us today to get help from a professional diamond consultant that is determined to find you the highest quality natural diamonds.

If you already have a stone and are not sure about the authenticity of it, you should have it tested by a lab like GIA, HRD or IGI. These labs have all the tools, techniques and experienced people needed to assure the authenticity of your stone 100%. Click here to learn about the certification process.

Cubic Zirconia

From the 70’s until the 90’s, Cubic Zircon (CZ) was the most popular diamond simulant in the market. It was first discovered by two German mineralogists. It was artificially synthesised in a Russian Laboratory in 1970. Cubic Zircon is usually present in yellow, light green or brown colours. A colourless variant of this gemstone is also available because of heat treatment.

Cubic Zircon is very similar to the diamond in appearance and qualities both. It is so much similar that even professional jewellers have had a hard time in differentiating between the two.

Preparation of good quality Cubic Zircon is a very hard task and is no less than an art. During its preparation, high temperatures are necessary to melt the ore and the cooling process has to be supervised very carefully in order to get high-quality crystals.

How to Identify CZ?

It is very hard to identify Cubic Zircon optically, but there are a few techniques to identify it among some other similar stones.

CZ exhibits external damage somewhat fast. This fact can be used to differentiate CZ from other stones.

The thermal conductivity of different stones also differ from each other. The specific thermal conductivity of diamond is a common fact that is used to differentiate it from its simulants, out of which many are thermal insulators instead of thermal conductors. CZ  and diamonds can be very easily differentiated due to their very unlike thermal conductivity because CZ is a very poor heat conductor. 

The method explained above aren’t going to prove whether you’re dealing with CZ or not, but instead, they’ll help you know if you’re dealing with a natural diamond.

Synthetic Moissanite

The latest diamond simulant discovered is Synthetic Moissanite. It first came into the market in 1997 and was first synthesised by the US company, C3 Inc. Natural Moissanite is a mineral that was first obtained from the meteorite that crashed in Diablo Canyon (Arizona). Natural Moissanite is very rare to find.

Synthetic Moissanite is very hard to differentiate from diamonds due to its hardness and high refractive index. Another reason which makes differentiation of diamonds from Synthetic Moissanite very difficult is its high range of thermal conductivity.

Synthetic Moissanite
Synthetic Moissanite - courtesy of StarGems
How to Identify Synthetic Moissanite?

When you look at Synthetic Moissanite from a certain point of view you’ll observe a double refraction. This characteristic can always be observed in Synthetic Moissanite and is one of the only ways to differentiate between diamonds and Synthetic Moissanite. This website provides a step-by-step guide to help you identify Synthetic Moissanite.