Type I and Type II Diamonds

The difference between Type I and Type II diamonds and how to make a great diamond investment

The classification of diamonds is based on physical properties and colour. It’s vital to classify them since it helps identify synthetic, natural, and treated diamonds. Typically, diamonds are composed of pure carbon. Nevertheless, many diamonds contain other elements such as boron or nitrogen naturally acquired through the formation process.

In other cases, you will find those trace elements are added to diamonds in a lab during treatment and synthesis. These contain optical defects, which is where a lattice of carbon atoms have imperfections. Due to these imperfections, diamonds have ultraviolet fluorescence and colour. A drastic diamond appearance is influenced by lattice defects and their arrangement in the diamond.

Scientists started classifying diamonds as type I and type II to categorise them according to atomic structure and composition. These groups are further classified into type 1a, Ib, IIa, and IIb. The main difference between these two classifications is that type II diamonds do not have nitrogen impurities, while type 1 do.

What Are Type I diamonds?

Type I diamonds have nitrogen impurities. If a diamond has nitrogen in its atomic structure, it will appear yellowish. The more the nitrogen, the more yellow the diamond appears. These diamonds are the most common, representing 98% of all-natural diamonds. Type I diamonds are further classified into type Ia and Ib.

Type Ia diamonds

Diamonds in this group have nitrogen atoms in cluster form all around the crystal stone structure. About 95% of natural diamonds fall under type Ia. Their colours vary from almost colourless to light yellow (they omit the yellowish stone). ​

Type Ib diamonds

This classification of diamonds also has nitrogen, but, in this case, it is not in cluster form. They are isolated all over the crystal structure. Approximately 0.1% of all diamonds are Type Ib diamonds. They have an intense orange, yellow, green, and brown colour tones.​

What Are Type II Diamonds?

Type II diamonds do not have nitrogen impurities in their atomic structure, or they don’t contain enough to get detected. It means that the diamond has no detectable impurities or boron impurities. Boron impurities make a diamond appear bluish. This group is also further classified into type IIa and IIb diamonds.

Type IIa diamonds

These are said to be the purest diamonds chemically since they have no measurable amount of boron or nitrogen impurities in the crystal structure. Type IIa diamonds are typically colourless, but they can still appear light pink, light brown, or pale yellow. White diamond stones are colourless, while fancy coloured diamonds have a pink, brown, purple, green or blue tone. Of all the mined stones worldwide, they constitute only 1% to 2% of diamonds in existence. Examples of these diamonds include famous pink diamonds such as the Daria-i-Noor and Noor-ul-Ain.

Type IIb diamonds

This group of diamonds conducts electricity. They contain the trace element boron within the atomic structure, making type IIb diamonds inclined to have a gray or blue tone. Type IIb diamonds constitute only 0.1% of diamonds, making them rare, hence very valuable.

Which diamonds are the most valuable?

The most valuable diamonds are pink diamonds since they are scarce and extremely appealing to the eye. Pink diamonds are costly – they are worth 10 to 30 times more than white diamonds. Ninety percent of these rare diamonds were found in Australian Argyle mine Production, which is now closed. These Australian pink diamonds are just a tenth of all the Argyle diamonds. Argyle pink diamonds are measured by tone and intensity. The tones include pink champagne, red, pink rose, purplish-pink, and pink. The intensity is measured using numbers from 1-8, with 8 being the least intense colour.

Investment Diamonds

Diamonds are rare, which gives them a high value at a low volume. They are precious, mysterious, magical, and exceptionally beautiful. The more the worlds diamond supply is depleted, the more the value increases. Investment diamonds are considered a haven because they increase in value throughout the years, but only quality diamonds stand out. To make a good long-term investment in diamonds, you have to follow diamond quality criteria:

Why Is The Use Of Diamonds As An Investment Growing Rapidly?

Where to buy the right investment diamonds

Diamonds can also be classified in other ways. One way to categorise diamonds is natural diamonds and non-natural diamonds. They are grouped according to their origin. The other category is coloured diamonds and colourless diamonds. Here diamonds are classified according to colour and chemical composition. The last method of classification is the one discussed in this article, which is type I and type II.

Diamond type can help you know it’s worth the price tag to make a smart investment. Argyle Diamond Investments are experts at both investment diamonds and diamonds for jewelry and heirloom settings. Getting specialist advice in this area is a must – the amount of money being spent on a highly technical item demands due diligence. Our team has been in the business of diamonds for over 25 years and have the skills and professional pedigree to make sure you get the best deal and advice on an investment diamond. Contact us today for some obligation free advice to get you started in the right direction!

Fancy Pink Diamond