These beads remind me of fresh cranberries, how they vary in ripeness from brilliant red to mottled. For a color check, use ripe, red cranberries as a norm.
The necklace is 18 inches long including the clasp. The beads are graduated with the largest being approximately 60mm down to about 20mm. The spacers also appear to be red jasper. The clasp is a gold barrel with a loop on it that catches the shepherd's crook. Condition is great.