Full Eternity 1.5mm Round Diamond White Gold Wedding Band Open Gap Engagement Ring Stackable Matching Ring Bridal Peridot Emerald Inside.. There are 2 special gemstones inside the band. Perfect for Engagement & Wedding, Christmas, Birthday, New Year:) The default gap is about 5mm. All gemstones can be changed into your birthstones or others. contact us for custom making! Gemstone Details1.5mm High Quality VS Moissanites or natural conflict free diamonds.Inside Stone: Lab emerald & natural peridot?