Pear Shape Diamond Engagement Ring -CRL001 - SKU - CRL001 - OBJ File Format For Rendering And Animations. - STL File Format For 3D Print - Seven Ring Rail Sizes You Will Get In US Sizes 4.5-5.0-5.5-6.0-6.5-7.0-7.5 All In STL Ready For 3D Print GOLD WEIGHT - SIZE US 4.5 - GOLD 14K WEIGHT 5.30 GRAMS - GOLD 18K WEIGHT 5.7