Antique 18ct Gold Amethyst and diamond Cluster Ring

1 Amethyst, dimensions: 10.1 x 8.9mm x 6.15mm, weight: 2.64ct
20 Diamonds, diameter: 1.3mm, weight: 0.18ct

Ring weight: 4.1 grams, length x width: 14.5 x 13mm, height: 6.3mm, size: L