So far, the rules excluded only the possibility of using compressed amber, amber substitutes, fake amber, and sub-fossilised resins (copals). The Board's decision was taken because of the difficulties that experts experience more and more often, when trying to distinguish between shaped and compressed amber. "We conducted a survey among Polish and foreign members of the International Amber Association who, in the great majority, opted for making the rules stricter for the recommended companies. They want to be sure that they buy amber of proper quality from their suppliers who are recommended companies" - explains Michał Kosior, vice-president of the International Amber Association. Even if the compressed amber or amber shaped through similar technology keeps the properties of natural amber, clients prefer the stones that didn't undergo such modifications. They also want to be sure of what they buy.
The recommended companies are obliged to comply with the classification of jewellery stones of Baltic amber, established by the International Amber Association, good trade practices and the rules of recommendation of the IAS. They also cannot trade products made of compressed and shaped amber, imitations, and fakes, as well as sub-fossilised resins (e.g. Columbian copal) or synthetic resins.
A recommended company is entitled to use the Association's sign. The certificate of a recommended company is granted for one year, after that time it needs to be renewed. The certificates are issued in the following languages: Polish, English, German, Spanish, French, Chinese, Korean, and Japanese.