14K WG diamond briolette necklace

14K white gold 16” chain. It has a lobster claw clasp and a diamond briolette dangle. The clasp and tag on the chain are marked 585. I would estimate the diamond to be 3.23 x 4.55, approximately.40-.50 ctw. E/F color VVS 2 or SI 1. I couldn’t see anything with the naked eye. Very bright white. It’s a sparkle bomb. If it was longer I would be keeping it. There is currently a 1ct similar Diamond briolette in color and clarity without a chain listed for 5723.31. I added a photo of a 1 ct one not as high in color selling in the 5k range. Chain is 1.52mm and I added a photo with a dime for scale.