Welcome to The International Diamond Institute (IDI)

The International Diamond Institute (IDI) was established to provide education and to protect consumers when buying or wanting to acquire expertise knowledge and values on their diamonds, precious stones and precious jewellery. IDI is an independent institute with offices around the world. IDI has been serving the International diamond industry for close to half a century.

IDI offers different level reports dependent on the item in question and of the requirements of our customers through different of our laboratories around the world we connect with the international diamond markets and have the most up to date information and prices to best enable us to evaluate your jewellery.

Here at the IDI we invest heavily in our research and development team to counter the growing use of LED in the quality chain.
We run all our laboratories at the same ISO standards with close quality control and all of our reports run through our triple check system to ensure consistent and anonymous grading.