For this I started with a sponged gradient of Blackened Bleu a black jelly with blue and green glitter from Barielle Shades, Ciao Bella which is the dark blue shimmer with blue glitter and Gorgeous a teal metallic both from Sinful colors.
The stamping plate is BM-401 from Bundle Monster.
I used Konad special stamping polish in black for the image and a coat of Seche Vite