The natural opals are magnificent, full of colour and life reds, blues and greens, all the colours of the rainbow! The hallmark is indistinct, however we have tested the ring and in our opinion the ring is 18 carat yellow gold. The head is 6.7 mm by 16 mm approx. The head sits approx 3.2 mm high off the finger.The weight of the ring is 3.4 grams approx. The diamonds weigh 0.12 carats approx. Alison Chapman, as seen on ITV's Dickinson's Real Deal and Secret Dealers! The item "Antique 18ct gold natural opal & diamond Edwardian styled ring size Q 3.4g" is in sale since Thursday, April 4, 2019. This item is in the category "Jewellery & Watches\Vintage & Antique Jewellery\Rings". The seller is "alison_chapman" and is located in Hythe. This item can be shipped worldwide.