Edwardian platinum emerald and diamond brooch

I bought this to turn into either a pendant or a bangle and I have gone overboard buying earrings so my budget for jewelry has dwindled, haha.   I posted a shot of it on my wrist so you can get an idea.  Metal Type: Platinum And 14K Yellow Gold Closure Type: Trumpet  Hallmarks: Unmarked  Total Weight: 3.90 dwt  CENTER STONE  Count: 1  Type: Emerald  Shape: Emerald Cut  Treatment: Oiled  Dimensions: 6.00 mm x 4.75 mm  SIDE DIAMONDS  Count: 4  Shape: Single Cut (2), Rose Cut (2)  Color Grade: H – I  Clarity Grade: I1  Dimensions: 2.00 mm (2), 1.75 mm (2)  Carat Weight: 0.08 ctw