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:

CARNIVAL GLASS LARGE FOOTED PITCHER HARVEST GRAPE IRIDESCENT GOLD
CARNIVAL GLASS LARGE FOOTED PITCHER HARVEST GRAPE IRIDESCENT GOLD
$19.50
Stunning L C Tiffany FAVRILE GOLD IRIDESCENT finger bowl underplate
Stunning L C Tiffany FAVRILE GOLD IRIDESCENT finger bowl underplate
$650.00
Vintage Depression Glass Bowl Gold Iridescent Diamond Cut Ruffled Edge 11
Vintage Depression Glass Bowl Gold Iridescent Diamond Cut Ruffled Edge 11
$11.99
Vintage handpainted iridescent gold set of six 8 oz glasses
Vintage handpainted iridescent gold set of six 8 oz glasses
$19.99
Lundberg Studios Art Glass Amethyst Heart Zipper Vase Red Violet Gold Iridescent
Lundberg Studios Art Glass Amethyst Heart Zipper Vase Red Violet Gold Iridescent
$195.00
Famosa LPW Austria Moriage Gold Gilt Amber Iridescent Decanter  6 Glasses M4052
Famosa LPW Austria Moriage Gold Gilt Amber Iridescent Decanter 6 Glasses M4052
$349.99
Lot of 3 CARNIVAL GLASS Pieces IRIDESCENT BOWLS Purple Red Blue Green and Gold
Lot of 3 CARNIVAL GLASS Pieces IRIDESCENT BOWLS Purple Red Blue Green and Gold
$57.00
Vintage 1960s Indiana Carnival Glass Iridescent Gold Sunflower Bowl
Vintage 1960s Indiana Carnival Glass Iridescent Gold Sunflower Bowl
$4.99
Hand Blown Solid Studio Art Glass Swan Canes Iridescent Amber Aqua Gold 15 High
Hand Blown Solid Studio Art Glass Swan Canes Iridescent Amber Aqua Gold 15 High
$28.00
Stunning 1986 Robert Eickholt Paperweight Blue  Gold Feathered Iridescent
Stunning 1986 Robert Eickholt Paperweight Blue Gold Feathered Iridescent
$29.95
Vintage 5 Piece Indiana Iridescent Amber Gold Glass Grape Pedestal Pitcher Set
Vintage 5 Piece Indiana Iridescent Amber Gold Glass Grape Pedestal Pitcher Set
$54.99
Mid Century Murano Glass Iridescent  Gold Fleck Glass Bowl
Mid Century Murano Glass Iridescent Gold Fleck Glass Bowl
$270.00
1996 ROBERT EICKHOLT ART GLASS IRIDESCENT GOLD BLUE PERFUME BOTTLE DAUBER SIGNED
1996 ROBERT EICKHOLT ART GLASS IRIDESCENT GOLD BLUE PERFUME BOTTLE DAUBER SIGNED
$95.00
VTG 6 FENTON ANGEL WITH BIRD GOLD IRIDESCENT TEXTURED WINGS
VTG 6 FENTON ANGEL WITH BIRD GOLD IRIDESCENT TEXTURED WINGS
$29.75
CORREIA SIGNED FROSTED  GOLD AURENE CUTBACK BUTTERFLY IRIDESCENT PAPERWEIGHT
CORREIA SIGNED FROSTED GOLD AURENE CUTBACK BUTTERFLY IRIDESCENT PAPERWEIGHT
$69.99
Indiana USA Iridescent Gold Independence Hall Bicentennial Plate
Indiana USA Iridescent Gold Independence Hall Bicentennial Plate
$14.95
Handcrafted Fused Art Glass Bowl Signed Kurt McVay Iridescent Black Teal Gold
Handcrafted Fused Art Glass Bowl Signed Kurt McVay Iridescent Black Teal Gold
$35.00
Vintage Indiana Glass Iridescent Gold Lily Pons Celery Tray 1950 1980s 5 13200
Vintage Indiana Glass Iridescent Gold Lily Pons Celery Tray 1950 1980s 5 13200
$8.00
Opal Art Glass Applied Iridescent Beads on Amber Gold Starfish Paperweight
Opal Art Glass Applied Iridescent Beads on Amber Gold Starfish Paperweight
$57.80
Iridescent Carnival Glass Round Dish in Amber Gold Beautiful
Iridescent Carnival Glass Round Dish in Amber Gold Beautiful
$15.99
ANTIQUE SIGNED TIFFANY FAVRILE GOLD IRIDESCENT ART GLASS SALT CELLAR
ANTIQUE SIGNED TIFFANY FAVRILE GOLD IRIDESCENT ART GLASS SALT CELLAR
$345.00
Vintage Carnival Glass Gold Iridescent
Vintage Carnival Glass Gold Iridescent
$21.50
Mayauel Ward Signed Blown Glass Tall Vase Tapered Iridescent Green And Gold
Mayauel Ward Signed Blown Glass Tall Vase Tapered Iridescent Green And Gold
$200.00
FEDERAL GLASS CO MILK GLASS WITH GOLD IRIDESCENT PIE PLATE 9 X 125 OVEN PROOF
FEDERAL GLASS CO MILK GLASS WITH GOLD IRIDESCENT PIE PLATE 9 X 125 OVEN PROOF
$19.00
Pair of Iridescent Gold Swirl Pattern Crystal Champagne Flutes Gold Decorated
Pair of Iridescent Gold Swirl Pattern Crystal Champagne Flutes Gold Decorated
$5.00
Violet flowered bowl with gold iridescent ribbed edging
Violet flowered bowl with gold iridescent ribbed edging
$3.00
Rare SUPERB MURANO GLASS ORIENTE GOLD IRIDESCENT VASE RAYMOR DINO MARTENS HUGE
Rare SUPERB MURANO GLASS ORIENTE GOLD IRIDESCENT VASE RAYMOR DINO MARTENS HUGE
$700.00
Vintage Murano Art Glass 4 Point Gold Swirls Flecks Iridescent 9 1 2 Bowl
Vintage Murano Art Glass 4 Point Gold Swirls Flecks Iridescent 9 1 2 Bowl
$74.99
2 Iridescent Blue Luster Champagne Flutes Wine Goblets White Filigree Gold Trim
2 Iridescent Blue Luster Champagne Flutes Wine Goblets White Filigree Gold Trim
$24.50
Lovely German WMF MYRA GOLD IRIDESCENT BOWL
Lovely German WMF MYRA GOLD IRIDESCENT BOWL
$120.00
Vintage Glass Gold Iridescent Pedestal Candy Dish and Lid 10  Tall
Vintage Glass Gold Iridescent Pedestal Candy Dish and Lid 10 Tall
$12.47
4 Rare Vintage Fenton Iridescent Gold Cobalt Mini Mugs Cups Button Arches HTF
4 Rare Vintage Fenton Iridescent Gold Cobalt Mini Mugs Cups Button Arches HTF
$67.49
CORREIA PAPERWEIGHT Iridescent Blue Gold Peacock Feather 1979 Collectible
CORREIA PAPERWEIGHT Iridescent Blue Gold Peacock Feather 1979 Collectible
$215.00
THREE QUEZAL GOLD AND IRIDESCENT GLASS ARTICLES WITH STEUBEN GOLD A Lot 63079
THREE QUEZAL GOLD AND IRIDESCENT GLASS ARTICLES WITH STEUBEN GOLD A Lot 63079
$340.00
A Loetz Papillon Gold Iridescent Glass Small Vase Art Nouveau Period
A Loetz Papillon Gold Iridescent Glass Small Vase Art Nouveau Period
$148.91
INDIANA GLASS Gold Amber Color Iridescent Carnival Glass Compote Pedestal Bowl
INDIANA GLASS Gold Amber Color Iridescent Carnival Glass Compote Pedestal Bowl
$37.50
Early ELAINE HYDE 1976 Glass Bud Vase IRIDESCENT Blue Gold
Early ELAINE HYDE 1976 Glass Bud Vase IRIDESCENT Blue Gold
$19.99
Neo Art Glass iridescent gold speckled pebble  silver dragonfly signed Kheaton
Neo Art Glass iridescent gold speckled pebble silver dragonfly signed Kheaton
$58.26
Fenton Iridescent Glass GOLD OPALESCENT SPIRAL OPTIC Melon Basket carnival
Fenton Iridescent Glass GOLD OPALESCENT SPIRAL OPTIC Melon Basket carnival
$59.95
SIGNED Fenton Iridescent 50th BILL ELINOR ANNIVERSARY BASKET Painted Gold Crest
SIGNED Fenton Iridescent 50th BILL ELINOR ANNIVERSARY BASKET Painted Gold Crest
$89.95


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