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:

Fenton TREE Autumn Gold Iridescent PINECONES  MISTLETOE OOAK FREEusaSHIP
Fenton TREE Autumn Gold Iridescent PINECONES MISTLETOE OOAK FREEusaSHIP
$279.99
ORIENT  FLUME ALEXANDER  SMALLHOUSE 627 1000 GOLD IRIDESCENT ACORN GLASS VASE
ORIENT FLUME ALEXANDER SMALLHOUSE 627 1000 GOLD IRIDESCENT ACORN GLASS VASE
$575.00
A Loetz Papillon Gold Iridescent Glass Small Vase Art Nouveau Period
A Loetz Papillon Gold Iridescent Glass Small Vase Art Nouveau Period
$151.67
CORREIA PAPERWEIGHT Iridescent Blue Gold Peacock Feather 1979 Collectible
CORREIA PAPERWEIGHT Iridescent Blue Gold Peacock Feather 1979 Collectible
$215.00
INDIANA GLASS Gold Amber Color Iridescent Carnival Glass Compote Pedestal Bowl
INDIANA GLASS Gold Amber Color Iridescent Carnival Glass Compote Pedestal Bowl
$37.50
Beautiful Robert Eickholt Glass Abstract Iridescent Vase Gold Foil Design
Beautiful Robert Eickholt Glass Abstract Iridescent Vase Gold Foil Design
$179.00
Vintage Iridescent Blue Glass Pedestal Compote Dish W Gold Trim in Box
Vintage Iridescent Blue Glass Pedestal Compote Dish W Gold Trim in Box
$26.99
Vintage Eickholt Perfume Bottle Signed 1987 Blue Ocean W Iridescent Gold Flecks
Vintage Eickholt Perfume Bottle Signed 1987 Blue Ocean W Iridescent Gold Flecks
$39.99
Indiana Glass Iridescent Gold Carnival Pineapple  Floral Footed Compote
Indiana Glass Iridescent Gold Carnival Pineapple Floral Footed Compote
$11.99
Indiana Glass Iridescent Gold Carnival Lily Pons 7 Berry Salad Vegetable Bowl
Indiana Glass Iridescent Gold Carnival Lily Pons 7 Berry Salad Vegetable Bowl
$13.99
Contemporary Art Glass Pitcher Red Mottled w Gold Iridescent Threading Signed
Contemporary Art Glass Pitcher Red Mottled w Gold Iridescent Threading Signed
$20.00
Kralik Aqua Gold Iridescent Antique Art Nouveau Bohemian Glass Vase c1905
Kralik Aqua Gold Iridescent Antique Art Nouveau Bohemian Glass Vase c1905
$329.73
Orient  Flume Glass Iridescent Pulled Feather Egg Paperweight Gold Purple
Orient Flume Glass Iridescent Pulled Feather Egg Paperweight Gold Purple
$4.25
Gold VTG Amber Iridescent Flare Lip Diamond Signature Drink Glass Candle Holder
Gold VTG Amber Iridescent Flare Lip Diamond Signature Drink Glass Candle Holder
$9.99
BEAUTIFUL 6 ORIENT  FLUME GOLD IRIDESCENT ART GLASS VASE SIGNED DATED 1985
BEAUTIFUL 6 ORIENT FLUME GOLD IRIDESCENT ART GLASS VASE SIGNED DATED 1985
$699.99
Vintage Carnival Glass Pair Candle Holders Gold Iridescent
Vintage Carnival Glass Pair Candle Holders Gold Iridescent
$9.99
RARE Set of 4 Antique Signed STEUBEN Gold Aurene Iridescent Glass Lamp Shades
RARE Set of 4 Antique Signed STEUBEN Gold Aurene Iridescent Glass Lamp Shades
$725.00
Carnival Candy Jar Indiana Glass Amber Gold Harvest Grape Iridescent Vintage T58
Carnival Candy Jar Indiana Glass Amber Gold Harvest Grape Iridescent Vintage T58
$19.99
Roger Roland Correia Iridescent Art Glass Gold Aurene Vase Estate
Roger Roland Correia Iridescent Art Glass Gold Aurene Vase Estate
$229.00
 ART GLASS Iridescent ROSE GOLD Glass FLOWER VASE  SALE PRICE
ART GLASS Iridescent ROSE GOLD Glass FLOWER VASE SALE PRICE
$39.55
Vintage Depression Amber Gold Iridescent Glass BUTTERFLY Dish carnival glass
Vintage Depression Amber Gold Iridescent Glass BUTTERFLY Dish carnival glass
$26.99
Vintage Indiana Carnival Glass Relish Tray Dish Iridescent Amber Gold Mint Clean
Vintage Indiana Carnival Glass Relish Tray Dish Iridescent Amber Gold Mint Clean
$14.99
Vintage Fenton Blue Purple Gold Carnival Cobalt Fluted Glass Iridescent Leaves
Vintage Fenton Blue Purple Gold Carnival Cobalt Fluted Glass Iridescent Leaves
$24.95
Vtg STEVEN CORREIA PAPERWEIGHT Iridescent Blues Gold Pulled Feather 3 1980
Vtg STEVEN CORREIA PAPERWEIGHT Iridescent Blues Gold Pulled Feather 3 1980
$139.00
LOVELY WEAVETEX IRIDESCENT GOLD BY INDIANA GLASS ALL OVER BASKETWEAVE BOWL 1950
LOVELY WEAVETEX IRIDESCENT GOLD BY INDIANA GLASS ALL OVER BASKETWEAVE BOWL 1950
$4.75
Robert Eickholt Art Glass Gold Amethyst Purple Aurene Iridescent Vase 2005
Robert Eickholt Art Glass Gold Amethyst Purple Aurene Iridescent Vase 2005
$217.97
ERIC DANDURAND Art Glass Iridescent Gold Vase Harmony Glassworks Signed Pontil
ERIC DANDURAND Art Glass Iridescent Gold Vase Harmony Glassworks Signed Pontil
$29.99
Rare Harrach Jaspis Pattern Matt Iridescent Gold relief Flower
Rare Harrach Jaspis Pattern Matt Iridescent Gold relief Flower
$995.00
Studio Glass Eickholt Gold Iridescent Swirl Vase 7 1982 MINT
Studio Glass Eickholt Gold Iridescent Swirl Vase 7 1982 MINT
$250.00
VINTAGE ORIENT  FLUME GOLD IRIDESCENT ART GLASS PAPERWEIGHT SIGNED DATED 1978
VINTAGE ORIENT FLUME GOLD IRIDESCENT ART GLASS PAPERWEIGHT SIGNED DATED 1978
$245.00
Vintage Art Glass VASE Iridescent Swirl GOLD Blue GREEN Pink
Vintage Art Glass VASE Iridescent Swirl GOLD Blue GREEN Pink
$45.00
VINTAGE INDIANA HARVEST GOLD IRIDESCENT CARNIVAL GLASS PEDESTAL PITCHER 64 OZ
VINTAGE INDIANA HARVEST GOLD IRIDESCENT CARNIVAL GLASS PEDESTAL PITCHER 64 OZ
$14.00
Vintage Carnival Glass FLuted Bowl Purple Teal gold Iridescent tones
Vintage Carnival Glass FLuted Bowl Purple Teal gold Iridescent tones
$23.33
Very Rare STEUBEN AURENE Iridescent Gold Art Glass Bud Vase c 1920 antique
Very Rare STEUBEN AURENE Iridescent Gold Art Glass Bud Vase c 1920 antique
$1,100.00
Indiana Glass Iridescent Gold Carnival Liberty Bell Commemorative Plate
Indiana Glass Iridescent Gold Carnival Liberty Bell Commemorative Plate
$7.31
Fenton Gold Crest Hobnail Opalescent 6 1 2 Basket Iridescent Surface
Fenton Gold Crest Hobnail Opalescent 6 1 2 Basket Iridescent Surface
$15.00
Pair Iridescent Gold Iris  Herringbone 2 lite Candleholders Candlesticks
Pair Iridescent Gold Iris Herringbone 2 lite Candleholders Candlesticks
$37.00
Carnival Glass Gold Tone  Amber  Iridescent Ruffle Fruit Dish Serving Bowl
Carnival Glass Gold Tone Amber Iridescent Ruffle Fruit Dish Serving Bowl
$4.95
2 SMALL IRIDESCENT CARNIVAL DEPRESSION GLASS BOWLS ONE ROSE ONE GOLD
2 SMALL IRIDESCENT CARNIVAL DEPRESSION GLASS BOWLS ONE ROSE ONE GOLD
$11.99
Vintage Carnival Glass Pitcher Marigold Honeycomb Prism Iridescent Peach Gold
Vintage Carnival Glass Pitcher Marigold Honeycomb Prism Iridescent Peach Gold
$9.99


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