1/8 CT. T.W. Diamond "Unstoppable" Necklace in 10K Gold. Your playful style and your strength meet in this 18.0-inch fancy chain "Unstoppable" toggle necklace reflecting Serena's positivity and determination. Fashioned with 1/8 CT. T.W. of diamonds set in warm 10K gold, this design features the word "Unstoppable" inscribed with a diamond as the "O". Captivating with its bright polished shine, diamonds line the toggle bar for an added hint of sparkle.