12 crystal knife rests in their box, Hungary, diamond point

Here are 12 very beautiful knife rests in their original cardboard box. According to the label, they were made in Hungary. I believe they are crystal; they are heavy for their size and the material is quite transparent and luminous. It is a very fine piece of craftsmanship, as evidenced by a few small air bubbles in the material and slight differences in length. Their design is elegant: simplicity in shape, just a slightly trapezoidal section, highlighted by the upper face adorned with a recessed diamond-point pattern that will beautifully reflect light on the table. They probably date from the 1960s to the 1980s. They are in very good condition, with no scratches, very transparent, but there is a micro-chip on one corner of two or three knife rests, almost invisible and barely detectable to the touch. The box has a small stain. Each measures 8.5 cm in length, 1.5 cm in width, and 1.2 cm in height, while the box measures 27 cm by 9.5 cm. The box and the 12 knife rests weigh approximately 700g.