Antique 4.45ct Diamond and Platinum Bow Brooch Circa 1920

A stunning, fine and impressive 4.45 carat diamond and platinum bow brooch; part of our antique jewellery and estate jewelry collections This stunning, fine and impressive antique diamond brooch has been crafted in platinum. The brooch has been realistically modelled in the form of a tied bow. The pierced decorated frame is embellished to the bow's knot with a feature individually collet set 0.42ct Old European cut diamond. The anterior surface of the bow loops and tails are ornamented with eleven further Old European cut diamonds, totalling 4cts. This fine diamond brooch is fitted with a hinged pin and clip fastening to the reverse. This platinum and diamond bow brooch is supplied with three independent diamond grading certificates for the feature diamonds, in addition to an independent diamond grading report card for the supporting stones. The brooch has been independently tested using state of the art technology (Niton Xl2 Analyzer) and verified as platinum. Diamond Quality Feature Diamond One Colour I Clarity Vs1 Cut Old European Content 0.66 carat Dimensions 5.20mm (length) x 5.19mm (width) x 3.50mm (depth) Feature Diamond Two Colour I Clarity Vs1 Cut Old European Content 0.65 carat Dimensions 5.01mm (length) x 4.95mm (width) x 3.70mm (depth) Feature Diamond Three Colour H Clarity Vs2 Cut Old European Content 0.42 carat Dimensions 4.60mm (length) x 4.56mm (width) x 2.82mm (depth) Supporting Diamonds Colour (average grades) G/H/I Clarity (average grades) Vs2/Si1 Cut Old European Content 2.72 carats Total Diamond Content 4.45 carats Number of Diamonds 12 Dimensions Length of setting 4.35cm/1.71" Width of setting 1.3cm/0.51" Across pin 4cm/1.57" Height of setting 5.7mm/0.22" Weight 5.77 grams