This 100% natural quartz finish combines one of nature’s hardest minerals with a specially engineered admixture Pebble Edge® that fortifies the cement. Luna Quartz® looks like traditional plaster but is much more durable. St Maarten is accented with black colored quartz. St Maarten falls in the black bottom color range. The watercolor hue cast by black bottom pools can be either blue or green. Because of the intense color, they are highly influenced by their surroundings and sunlight.