Crafted in 18 karat yellow gold, this Medium Sleek Collar Necklace features our Gemstone Crescent Medallion set with baguette-cut blue sapphire and round diamonds. Symbolic of Karma, the crescent moon, from the Latin word crescere , to grow, symbolizes that every day is a new day to work towards truth and balance. We can always choose what kind of energy we radiate in the world.