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The^Bob: Synthetic LMA, fluorescence & transmission
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The^Bob: Fungus-stained rotting wood
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The^Bob: Peacock feather
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The^Bob: The Kelpies
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The^Bob: Opalescent glass pebbles, illuminated from different directions
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The^Bob: Ammonite fossil , Madagascar
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The^Bob: Rayleigh pebble games
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The^Bob: Ammonite fossil, England
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The^Bob: Coprolite fossil
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The^Bob: Fossil ammonite
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The^Bob: Green fluorite from Weardale, fluorescence
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The^Bob: Fluorite twin from Heights mine
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The^Bob: Discus fish, Symphysodon spp.
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The^Bob: Perylene in in blue amber - term diagram
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The^Bob: Bluebell malonylawobanin pigment
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The^Bob: Haüyn vis-IR transmission and fluorescence
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The^Bob: Kyanite-blue-cut_T_fl_407nm_uv-vis
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The^Bob: Copper precipitating from water
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The^Bob: Gadolinium Gallium Garnet
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The^Bob: Jeremejevite vis-IR transmission
The^Bob: Candle, blue part of flame
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The^Bob: Gentian
The^Bob: Cut Zoisite (Tanzanite) gem, fluorescence & transmission
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The^Bob: Azurite, malachite, lapis-lazuli reflectance
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The^Bob: Fluorescence and phosphorescence of Sumatran blue amber
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The^Bob: Halite with blue zones
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The^Bob: Blue fungal stain on wood, xylindein
The^Bob: Ulexite fluorescence
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The^Bob: Fluorite transmission spectra
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The^Bob: Hemimorphite reflectance and fluorescence