PRACTICAL SORTING TRAYS Ideal for displaying your precious stones, diamonds etc. more effectively. (Special for counter display) Available in Black or White ColourRECTANGLE SORTING TRAYSSorting trays for beads, and for accurate grading and shading of diamonds and gemstones. Available in black and white color.T-3a - Round CornerT-3b - Square CornerAvailable in Small Size also.