Mr LeVian exclusively told Express.co.uk: “This is a trending look evoking masculinity and strength for men.
“Le Vian creates dozens of unique dog tag necklace designs in gold and or silver and with Chocolate Diamonds, Nude Diamonds, Blackberry Diamonds or Blueberry Sapphires.”
Besides his children’s heartbeats, another pendant showed the gemstone tiger’s eye, which a friend of his in Bostwana made for him.
Botswana is a special place for the Duke and Duchess of Sussex, who took a trip together there in 2016 for their third date.