Ruby Solitaire engagement ring. Ruby is the king of precious gems, is the birthstone for fortunate folks born in July. Symbolic of the passion and energy associated with the color red, the vibrant ruby is said to bring love and success. Materials: 18k solid gold Stone:RubyDiameter 3mm Round CutCarat Weight: 0.10 – 0.11 carat Ring's band: 1.75 mm Natural white goldPlease choose your favourite gold colour from the drop-down menu.We don’t rhodium-plate our white gold. Instead, it keeps its original champagne shade — a slight hint of yellow or grey, not bright white. That is the look we prefer: it doesn’t need re-plating later.If you want a cooler, classic white, select white + rhodium. Thanks! NOOI R 149 Ruby www.nooijewelry.com