9ct Yellow Gold Celtic Knot Brooch – Art Nouveau Pin, Sheffield Hallmark

An elegant 9ct yellow gold pin brooch inspired by Celtic and Art Nouveau styling, featuring a graceful interwoven knot design with flowing openwork detail.

Measuring 5cm in length and 0.8cm in width, this refined brooch is hallmarked at the Sheffield Assay Office with a clear 375 gold stamp, confirming its authenticity and quality. The reverse is fitted with a secure pin fastening, allowing it to be worn beautifully on a lapel, scarf, or dress.

Weighing 2.4 grams, this delicately crafted piece blends timeless Celtic symbolism with early 20th-century design influences — an elegant nod to craftsmanship and heritage.

Lovingly refurbished and polished in our Isle of Wight workshop, it’s presented in excellent pre-loved condition — ready to wear or gift as a treasured keepsake.

• Material: Solid 9ct Yellow Gold

• Style: Celtic knot / Art Nouveau-inspired openwork brooch

• Dimensions: 5cm (L) x 0.8cm (W)

• Weight: Approx. 2.4 grams

• Hallmark: Sheffield Assay Office, 375 gold stamp

• Fastening: Traditional pin fitting to reverse

• Condition: Pre-loved, refurbished and polished

A timeless piece of heritage jewellery, perfect for collectors of Celtic gold or those who appreciate the artistry of classic British hallmarked designs.