Platinum Round Brilliant Diamond Halo Engagement RingThis striking Platinum round halo set ring is lovingly made in our Hatton Garden workshop in London. The round brilliant central stone is 0. 30ct diamond. E in Colour and SI1 clarity. The stone is surrounded with a round halo of smaller diamonds and diamond set shoulders another 0. 30ct. Total diamond weight is 0. 60ct so over half a carat. The ring comes with a GIA diamond certificate. The size we have in stock is an M, we can order other sizes to