Symptoms. Many people have no symptoms in the early stages of avascular necrosis. As the condition worsens, your affected joint may hurt only when you put weight on it. Eventually, the joint may hurt even when you're lying down. Pain can be mild or severe and usually develops gradually. Pain associated with avascular necrosis of the hip may be focused in the groin, thigh or buttock.
The Beautiful Color Blue. Blue topaz gemstone. Blue topaz can generally be found in three different shades: pale sky blue, cool Swiss blue, and deep London blue. The sparkling stones evoke images of the wind, sky, and water. Blue is the color of calm and quiet. It can help us channel relaxing energies and fight off chaos and negative emotions.
Topaz makes an ideal gem. A good hardness and desirable colors, combined with a relative abundance and availability makes it one the most popular gemstones. The most valuable colors of Topaz are the golden orange-yellow type, called Imperial Topaz, and the dark pinkish-red and orange-red colors.