9ct yellow gold marquise cut opal amp diamond necklace opal informationstone cutshape marquisestone size 4x2mmnumber of stones 5carat weight per stone 0063birthstone octoberzodiac librawedding anniversaries 14thwhite diamond informationstone cutshape roundstone size 150mmnumber of stones 1carat weight per stone 0015birthstone aprilzodiac arieswedding anniversaries 10th 60th and 75th