Kate Middleton wears elegant Astley Clarke necklace and affordable twisted hoop earrings from Spells of Love

The Princess of Wales wore a striking Astley Clarke necklace to complement her peacock blue Chanel blazer - and it's still in stock online.

• The necklace is one of the Princess's more affordable fashion buys, retailing at $185/£160. Catherine teamed this pretty piece with simple twisted gold hoops from London-based jewelry brand Spells of Love, priced at just $67/£60. 
• The Duchess appeared alongside her husband, Prince William, at the Queen Elizabeth Olympic Park in London yesterday in a typically stylish ensemble. 
• In other royal news, What is the Koh-i-Noor diamond? History, value, and everything you need to know about the controversial gem in the Queen Mother's crown.

Jewelry trends have a habit of coming full circle, and we're sure the masses will follow after Catherine was spotted matching her necklace to her outfit. 

Yesterday, Kate Middleton wore a peacock blue bouclé blazer from Chanel during a visit to the Copper Box Arena in the Queen Elizabeth Olympic Park in London. Catherine finished the look with a striking lapis lazuli necklace from Astley Clarke, which retails at $185/£160. The brand also offers matching earrings, if you want to further embrace the trend. 

We've spotted Catherine wearing this stunning piece before - the Princess of Wales most recently wore it to last month's visit to HMS Glasgow. We're not surprised it's one of her go-to pieces, as the striking blue color matches Catherine's sapphire engagement ring perfectly. 

Round Stilla Lapis Lazuli necklace, $185/£160 | Astley Clarke
This elegant necklace can be worn on its own or layered with other necklaces for a statement look. It also comes in five other colors so you can match your outfit, like Kate. 

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Spells of Love Medium Twist Hoops, $67.48/£60 | Spells of Love
These classic hoops will match pretty much any outfit, adding an elegant finish. Do note that this item is a pre-order item and takes around 10-12 weeks to responsibly hand make.

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If you're not sold on the color, Astley Clarke's necklace also comes in five different variations - green onyx, moonstone, amazonite, onyx and red agate - so shoppers can match their jewelry to their outfits, like Kate.

Catherine looked flawless in the blue ensemble as she appeared alongside her husband, Prince William, to attend a Coach Core event in London. 

She teamed the blazer with some classic capsule wardrobe items - sleek black trousers and matching block heels - resulting in a polished and sophisticated look.

It's great to see Princess Catherine mixing and matching designer buys with more affordable pieces yet again. Last week, Catherine was spotted wearing the perfect cream blazer from Zara, which is currently on sale for just £25.99, with a 50% discount. While last week saw Catherine pair some affordable Missoma earrings with a silk pussybow blouse from British brand Winser.