Cash for gold Warsaw city, Poland. Purchase and sale of precious stones Warsaw. Our valuation service mainly concerns precious jewelery and precious stones, in particular diamonds. Completed specialist courses allow us to do so. For the valuation and valuation of precious stones used in jewelry, we use very modern measuring devices and practical knowledge of precious stones, supported by many years of experience. To learn more about the valuation of jewelry, please contact A.J.Diament Sp. z o.o. certified expert and diamond appraiser. A.J.Diament Sp. z o.o. has been dealing with the purchase and sale of precious stones for years. The purchase and sale point is located in Warsaw city. In addition, the company also trades in investment diamonds. It has recently been a very popular form of financial investment all over the world. We advise on the purchase and sale of diamonds defined as investment diamonds, i.e. those meeting very high quality parameters