Spectrum's wispy glasses are the most transparent within this range, with opal streaks through the sheet. The translucent glasses tend to have more opal mixed rather than streaked through them. The opal glasses are the most solid of all, reflecting light but with little or no vision through. The pearl opals have a wonderful luminescent glow.
The range includes both single solid and mixed colour combinations which can look quite different depending on whether they use natural or artificial light.
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