Onyx and mosaic mother of pearl. The Daniel Dolce Italy collection of mother of pearls tie bars accessories features a range of premium projects that provide the ultimate complement to our clothing lines. We offer a full line of shirt and tie accessories including metal collar stays and tie pins, colorful silk knots and tie bars crafted with semi precious stones. The collection of blue flower mosaic onyx and mother of pearl tie bars also include unique leather bags and jewelry featuring sterling silver bracelets and necklaces.