Earrings made of Amethyst, blue crystal, and pink seashell would be a unique and striking piece of jewelry that combines natural materials and contrasting colors. 
The amethyst would likely form the centerpiece of the design, with its deep purple color adding a regal and elegant quality to the earring. The amethyst would be cut and polished to create a smooth or faceted surface that would catch the light and add a sparkling quality to the earring. 
The  blue Aventurine would be used to frame the amethyst, creating a halo effect that would add depth and dimension to the design. The blue crystal would add a cool and calming element to the earring, with its translucent surface adding a touch of shimmer and shine. The Green Aventurine would add a natural and earthy element to the design, with its vibrant green color and unique texture creating a sense of balance and grounding. 
This earring would be a versatile and timeless addition to any jewelry collection, suitable for a wide range of occasions and outfits.
These earrings make a great gift for anyone who loves the beauty of natural elements and unique jewelry. They come in a small gift box, ready to be presented to someone special.