Possible Clues:

• Beam of soft light, comes and goes
• Take element from single amber light that's faint
• Glow of light
• Sparkle of diamond, say, cut separately by foremost in London and Amsterdam
• Brilliance of a single amethyst
• Injured 26 before morning had faint glow
• Alluring, full of Eastern sparkle
• Beam of soft light, perhaps in eye
• Brightness shown by English in old Welsh county briefly
• Look in the eye, and shaft