Scolymia corals are a large polyp stony (LPS) corals. Scolymia corals are round in shape and found in cup, saucer, flat, or dome-shaped variations. They usually have a single oral opening present in the center. Some species may have more than one. A Scolymia can grow up to 4 inches in diameter. Scolys come in a variety of patterns and vibrant hues, with some corals having a combination of multiple colors. The most prized specimen of Scolymia are the "Master Scolys." What is a Master Scoly? Expensive, that's what! haha! And it is purely up to the grower/seller/beholder to determine Master status. While there is no specific standard, the general rule seems to be this: A Master Scoly will have 4 or more colors present and/or have exceptionally intricate patterns comprised of at least 3 vibrant colors. The Scolymia coral has many names: "Doughnut coral," "Scoly," "Disk coral," "Artichoke coral," "Button coral," etc. But this coral's actual name - at this moment - is Homophyllia australis or Australis.