Seafoam agate, a type of chalcedony within the family of cryptocrystalline quartz known as agate, exhibits a predominant hue of seafoam green, often adorned with bands or swirls in hues of white, grey, or other shades of green. Renowned for its tranquil and soothing appearance reminiscent of oceanic waves and coastal vistas, this particular agate variety is highly valued.