Iridescent Gold

What chemical is purple in the bottle and gold upon touching air?

I remember using it in Grade 12 biology, and I think we were staining cells with it. It was incredibly vivid purple or indigo in the bottle and when it hit skin (as my lab partner found out, whoops) but when just a little was spilled on the counter top or dribbled down the side of the bottle it turned a remarkable iridescent gold colour.

I remember the teacher referred to it as "(something) Violet" or "(something) Purple". Any ideas?

Cell staining is usually done with crystal violet, also called gentian violet.

Find Iridescent Gold On eBay Below:

Craig Zweifel art glass paperweight gold iridescent hanging hearts on vine moon
Craig Zweifel art glass paperweight gold iridescent hanging hearts on vine moon
$215.00
Ditchfield Blue Purple Gold Iridescent Glass Apple Glasform Gold Paper Label
Ditchfield Blue Purple Gold Iridescent Glass Apple Glasform Gold Paper Label
$61.10
STEUBEN CARDER ERA GOLD AURENE IRIDESCENT ART GLASS 25 MINIATURE VASE SIGNED
STEUBEN CARDER ERA GOLD AURENE IRIDESCENT ART GLASS 25 MINIATURE VASE SIGNED
$450.00
Stunning signed Steuben studio glass Iridescent light shade Gold aurene
Stunning signed Steuben studio glass Iridescent light shade Gold aurene
$165.00
Nick Del Motto art glass paperweight gold iridescent hanging hearts 1978 signed
Nick Del Motto art glass paperweight gold iridescent hanging hearts 1978 signed
$129.00
Orient  Flume Art Glass Paperweight Gold Iridescent Butterfly  Flower 1975
Orient Flume Art Glass Paperweight Gold Iridescent Butterfly Flower 1975
$170.00
Kurt Mcvay Iridescent Blue Purple Gold Fused Plate
Kurt Mcvay Iridescent Blue Purple Gold Fused Plate
$40.00
Vintage Carnival Glass Iridescent Gold Candy Bowl Dish
Vintage Carnival Glass Iridescent Gold Candy Bowl Dish
$14.00
Kew Blass Gold Iridescent Finger Bowl Under Plate Art Glass Plate Antique
Kew Blass Gold Iridescent Finger Bowl Under Plate Art Glass Plate Antique
$149.00
ISLE OF WIGHT GLASS PAPERWEIGHT GOLD WHITE IRIDESCENT
ISLE OF WIGHT GLASS PAPERWEIGHT GOLD WHITE IRIDESCENT
$7.41
Neo Art Glass iridescent gold speckled pebble  silver dragonfly by Kheaton
Neo Art Glass iridescent gold speckled pebble silver dragonfly by Kheaton
$55.53
Iridescent Glass Vase Gold Pink 3 1 2 Aurene 237
Iridescent Glass Vase Gold Pink 3 1 2 Aurene 237
$45.00
TINY LUNDBERG STUDIOS Glass PAPERWEIGHT Signed IRIDESCENT GOLD AURENE Treasure
TINY LUNDBERG STUDIOS Glass PAPERWEIGHT Signed IRIDESCENT GOLD AURENE Treasure
$99.00
Original Signed R Coleman Blown Iridescent Cobolt Blue W Gold Vase 3 1 2 Tall
Original Signed R Coleman Blown Iridescent Cobolt Blue W Gold Vase 3 1 2 Tall
$59.99
Gorgeous Correia Iridescent Cobalt Blue  Gold 775 Vase Signed  Numbered
Gorgeous Correia Iridescent Cobalt Blue Gold 775 Vase Signed Numbered
$159.99
Iridescent Gold Carnival Glass Footed Oval 12 Fruit Bowl Indiana Glass
Iridescent Gold Carnival Glass Footed Oval 12 Fruit Bowl Indiana Glass
$19.99
Neo Art Glass iridescent gold spiral glass pebble silver dragonfly sign Kheaton
Neo Art Glass iridescent gold spiral glass pebble silver dragonfly sign Kheaton
$5.74
Jeannette Glass Iris  Herringbone Iridescent Carnival Flora Gold 9 Flower Vase
Jeannette Glass Iris Herringbone Iridescent Carnival Flora Gold 9 Flower Vase
$22.99
Antique Quezal Vase with gold iridescent
Antique Quezal Vase with gold iridescent
$995.00
Vintage Jeanette Glass Basketweave Bowl Iridescent Gold
Vintage Jeanette Glass Basketweave Bowl Iridescent Gold
$7.50
Footed Salt Cellar LCT Gold Iridescent Art Glass Favrile style
Footed Salt Cellar LCT Gold Iridescent Art Glass Favrile style
$350.00
Vintage Collectible Jeanette Iridescent Gold Glass Deer Fawn 6 Trinket Box
Vintage Collectible Jeanette Iridescent Gold Glass Deer Fawn 6 Trinket Box
$17.99
Beautiful Honey Gold Iridescent Westmoreland Argonaut Shell Covered Dish
Beautiful Honey Gold Iridescent Westmoreland Argonaut Shell Covered Dish
$75.00
Vintage AMBER IRIDESCENT GOLD Carnival Glass DISH BOWL GRAPES AND LEAVES 7inx22
Vintage AMBER IRIDESCENT GOLD Carnival Glass DISH BOWL GRAPES AND LEAVES 7inx22
$3.99
Antique STEUBEN Calcite Aurene VASE Iridescent Gold Art Nouveau Glass
Antique STEUBEN Calcite Aurene VASE Iridescent Gold Art Nouveau Glass
$292.50
Vintage Gold Amber Iridescent Indiana Carnival Glass Grape Candy Dish Compote
Vintage Gold Amber Iridescent Indiana Carnival Glass Grape Candy Dish Compote
$24.97
ENTHRALLING Big SIGNED Art Glass VASE Blue GOLD Purple IRIDESCENT Designs 1970s
ENTHRALLING Big SIGNED Art Glass VASE Blue GOLD Purple IRIDESCENT Designs 1970s
$650.00
Vitg OVAL CARVINALGLASS CENTER BOWL Iridescent Gold in Original Box 1198
Vitg OVAL CARVINALGLASS CENTER BOWL Iridescent Gold in Original Box 1198
$19.99
Cohn Stone Studios Iridescent Gold American Art Glass Spiral Shell Paperweight
Cohn Stone Studios Iridescent Gold American Art Glass Spiral Shell Paperweight
$95.00
VINTAGE 1960s JEANETTE GLASS IRIDESCENT CARNIVAL SALAD BOWL IN FLORAL GOLD
VINTAGE 1960s JEANETTE GLASS IRIDESCENT CARNIVAL SALAD BOWL IN FLORAL GOLD
$19.99
INDIANA GLASS Gold Amber Color Iridescent Carnival Glass Compote Pedestal Bowl
INDIANA GLASS Gold Amber Color Iridescent Carnival Glass Compote Pedestal Bowl
$4.95
Vintage Indiana carnival glass relish tray dish iridescent amber Gold Set of 2
Vintage Indiana carnival glass relish tray dish iridescent amber Gold Set of 2
$12.99
FABULOUS French Art Glass Antique Salt Dip Opal Iridescent Gold w Pink Stripes
FABULOUS French Art Glass Antique Salt Dip Opal Iridescent Gold w Pink Stripes
$123.53
Purple  Gold Iridescent Carnival Glass Grape Motif Ruffle Rim Accent Bowl
Purple Gold Iridescent Carnival Glass Grape Motif Ruffle Rim Accent Bowl
$20.00
VINTAGE 26Pc INDIANA GLASS GOLD CARNIVAL IRIDESCENT HARVEST GRAPEPUNCH BOWL SET
VINTAGE 26Pc INDIANA GLASS GOLD CARNIVAL IRIDESCENT HARVEST GRAPEPUNCH BOWL SET
$175.00
Vintage Depression Glass Bowl Gold Iridescent Diamond Cut Ruffled Edge 11
Vintage Depression Glass Bowl Gold Iridescent Diamond Cut Ruffled Edge 11
$14.99
Vintage Fenton One Glass Candlestick Amber Gold Lustre 85 Taper Iridescent
Vintage Fenton One Glass Candlestick Amber Gold Lustre 85 Taper Iridescent
$19.36
DUGAN ART GLASS Purple GOLD VENETIAN IRIDESCENT VASE NICE Pompeian Japanese
DUGAN ART GLASS Purple GOLD VENETIAN IRIDESCENT VASE NICE Pompeian Japanese
$139.95
Jeannette Glass Louisa Iridescent Pattern Gold Glass Candy Dish Marigold Flower
Jeannette Glass Louisa Iridescent Pattern Gold Glass Candy Dish Marigold Flower
$44.99
Jeannette Glass Louisa Marigold Iridescent Gold Flower Pattern Water Pitcher
Jeannette Glass Louisa Marigold Iridescent Gold Flower Pattern Water Pitcher
$52.49


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