Amethyst Checkerboard Top Fancy Rectangle 13x21mm Gemorex International Inc Sale! from $363.80 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. 18.19ct: 13x 21x 10mm NATURAL **Don't see the size or shape you're looking for? Contact us to place a custom stone cutting order ... Qty available: 1 SKU: 100023 AMETHYST Tweet