Opal

Why does each opal display different colors and patterns?

Opal's famous color play comes from its unique internal structure of tiny silica spheres arranged in a grid-like pattern. These spheres diffract light, creating the flashing colors you see. The size of these spheres and their arrangement determine which colors appear – larger spheres produce reds and oranges, while smaller ones create blues and greens. This microscopic structure is unique to each opal, which is why no two pieces show exactly the same pattern or color combination. Some opals may display predominantly blue and green flashes, while others might showcase the full spectrum of colors.

How do I prevent my opal from cracking or crazing?

Opals contain water within their structure and can be sensitive to extreme conditions. To protect your opal, avoid sudden temperature changes and keep it away from prolonged heat or intense light exposure. Store your opal in a slightly damp cotton cloth or with a small water source in a sealed container to prevent dehydration. Never store opals in direct sunlight, dry environments, or airtight plastic bags. Some opal varieties, particularly Ethiopian opals, can be more sensitive to water exposure, so it's important to know which type you have and care for it accordingly.

Is it normal for my opal to change appearance in different lighting?

Yes, opal's appearance can change dramatically under different lighting conditions – this is part of its charm! Natural daylight often shows the best color play, while fluorescent lighting might emphasize different colors. Some opals appear more vibrant in direct light, while others show their best colors in diffused lighting. The angle of viewing also affects which colors are visible, so rotating an opal often reveals new patterns and color combinations. Professional photographers often use black backgrounds and targeted lighting to capture opal's full range of color, which is why photographs might show different effects than what you see in various everyday lighting conditions.