Height: 0.5cm. By swapping all its diamonds out with lab-grown diamonds, Maria Black refrains from cartel pricing, land displacement, unfair labour practices, violence and human rights violations. 14kt Impact gold which is a mixed alloy consisting of 30% Fairtrade 14kt gold and 70% recycled 14kt gold. Diamond diameter: 1.8mm. FG/SI lab-grown diamonds: 0.075ctw.