While all eyes have been on how Duchess Meghan has been faring with her pregnancy on the royal tour, the jewellery that has adorned her is sparking plenty of interest as well.

After the meaning of Prince Harry’s sentimental bracelet was revealed last week, jewellery designers have given their take on the hidden meaning behind the expectant mum’s jewellery.

According to People magazine, the 37-year-old is making some “bold” statements with the pieces, particularly showcasing jewellery that is made from sustainable material and ethically made.

At the opening of the Invictus Games on the weekend, Duchess Meghan chose to wear a number of pieces by Ecksand, including stackable rings, a favourite of hers. Ecksand uses recycled hold and ethical gems in its jewellery. The jewels on the rings, sapphire, emerald and marquise diamond, are set in 18k sustainable gold.

“Just seeing her wear our pieces really reiterates to us that she must already be aligned with our values,” co-founder and designer Erica Bianchini of Ecksand said in an interview with People. “And the way she brought them all together is so fun, she always put things together so naturally.”

And Bianchini said that the Duchess’ choice of the brand’s jewellery also has a double meaning to go along with her message of sustainability: “everlasting love". 

The expectant mum was also seen wearing Ecksand’s Emerald Secret Heart Stackable ring which features a “moveable emerald heart".

“I was really happy to see she chose that because I love emeralds and also they mean everlasting love,” said Bianchini, although the designer says, Duchess Meghan doesn’t need a reminder, such is the affection shown between her and husband Prince Harry.

“I don’t think the duchess needs any gems to reinforce that!”

And the Duchess isn’t afraid to re-wear her jewellery with some favourite pieces making repeated showings, again by another ethical jeweller British designer Pippa Small. After wearing it at Princess Eugenie’s wedding, Duchess Meghan has donned Small’s Herkimer Diamond quartz pieces during the royal tour.

“I think they suit her just perfectly,” said Small. “They are quite organic, simple and pure, which somehow works really beautifully with her style.”

She has again continued the re-wearable, sustainably designed trend with another jeweller aligned with her values, Los Angeles based Adina Reyter. The Duchess wore her 3 Diamond Amigos Curve Post earrings a number of times on tour.

“Everything she has worn so far is very wearable, it’s not fussy and that’s her entire appeal,” said Reyter.

“Customers want the personal message of the meaning behind the design and the brand – having someone like Meghan Markle wear our pieces really communicates who we are and we couldn’t be happier.”

Duchess Meghan also paid tribute to Princess Diana during the trip wearing some of her most treasured pieces, her butterfly earrings and gold bracelet.