GEMSTONE
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TREATMENTS ACCEPTED BY FRED MEYER JEWELERS
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Special Care & Advice
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Agate
Blue, Green
White
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Dyed or heated to improve color
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Exposure to heat or light over time may cause color to fade.
Normal gemstone care
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Alexandrite
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None
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Normal gemstone care
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Amazonite
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Heated, irradiated, impregnated with colorless plastic
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Do not use ultrasonic cleaner or steamer. Avoid intense heat and household chemicals.
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Amethyst
Pink, Purple & Green
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Heated to improve appearance or lighten color.
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Normal gemstone care
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Aquamarine
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Heated to improve color and clarity.
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Normal gemstone care
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Aventurine
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Dyed to enhance color
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Normal gemstone care
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Calcite
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Dyed, impregnated with colorless plastic
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Avoid intense heat and household chemicals.
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Charoite
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None
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Avoid heat, chemicals & ultrasonic cleaners.
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Citrine
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Heated to improve color
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Normal gemstone care
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Cultured Pearl
Akoya, Freshwater, Keshi, South Sea, Tahitian
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Bleached and polished to achieve uniform color and shape. Dyed or irradiated to produce various colors. Coated for protection.
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Avoid contact with cosmetics, hair spray, perfume and household chemicals including alcohol and solvents. Clean with a soft cloth. Do not use ultrasonic cleaner or steamer.
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Diamond
White
Black Colored
Brown, Champagne, and Yellow
Blue
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None
Heated to create color
None
Heated or irradiated
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Normal gemstone care
Normal gemstone care
Normal gemstone care
Normal gemstone care
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Emerald
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Penetrated with oil, wax or clear resin to improve clarity and durability. Dyed with color agents.
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Clean with warm soapy water and a soft brush or cloth. Avoid sudden temperature changes, rough handling, steaming and contact with cosmetics, hair spray, and household chemicals including alcohol and solvents. Do not use an ultrasonic cleaner.
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Garnet
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None
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Normal gemstone care
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Hematite
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None
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Normal gemstone care
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Iolite
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None
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Normal gemstone care
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Jade
Jadeite, Nephrite
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Bleached, dyed and surface polished with a colorless wax.
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Do not use ultrasonic cleaner or steamer. Avoid intense heat and household chemicals.
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Jasper
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Dyed
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Normal gemstone care.
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Kyanite
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Heated
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Do not use ultrasonic cleaner or steamer. Avoid intense heat and household chemicals.
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Lab Created
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None
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Normal gemstone care
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Lapis Lazuli
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Dyed to improve color uniformity. Coated with colorless wax and surface polished.
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Clean with warm soapy water and a soft brush or cloth. Do not use ultrasonic cleaner or steamer. Avoid intense heat and household chemicals.
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Malachite
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Coated with colorless wax to improve surface uniformity.
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Do not use an ultrasonic cleaner. Avoid household chemicals.
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Morganite
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Heated or irradiated to enhance color
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Normal gemstone care
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Opal
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Fused together with backing to create a unique design or color combination.
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Do not use ultrasonic cleaner or steamer. Avoid intense heat, cosmetics, and household chemicals. Clean with warm soapy water and a soft brush or cloth.
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Onyx
Black
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Dyed or heated to improve color.
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Normal gemstone care.
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Peridot
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None
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Avoid sudden temperature changes and ultrasonic.
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Quartz
Green Prasiolite, Lemon, Lime, Pink, Rose, Silver, Smoky, White
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Heated or irradiated to enhance color.
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Normal gemstone care
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Quartzite
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Dyed, impregnated with colorless plastic
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Normal gemstone care
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Rhodochrosite
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None
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Normal gemstone care
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Rhodonite
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None
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Normal gemstone care
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Ruby
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Heated to improve color. Fissures and cavities can be filled with foreign material including glass, lead-glass, and glass-like substances to improve clarity. Can be diffused or irradiated to improve color.
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Clean with warm soapy water and a soft brush or cloth. Avoid strong detergents and household chemicals including alcohol and solvents. Sensitive to intense heat, pressure and ultrasonic. Avoid re-polishing or re-cutting.
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Sapphire
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Heated to improve color and clarity. Can be diffused and irradiated to produce a variety of colors.
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Clean with warm soapy water and a soft brush or cloth. Avoid strong detergents and ultrasonic. Avoid re-polishing or re-cutting.
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Sodalite
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Dyed
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Do not use ultrasonic cleaner or steamer. Avoid intense heat and household chemicals.
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Sunstone
Oregon
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None
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Normal gemstone care
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Tanzanite
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Heated to improve color
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Clean with warm soapy water and a soft brush or cloth. Do not use ultrasonic cleaner or steamer. Avoid sudden temperature changes.
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Tiger's Eye
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Heated to improve color
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Normal gemstone care. Avoid sudden temperature changes.
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Topaz
Blue, Pink, White
Mystic
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Irradiated and heated to produce color.
Coated to generate iridescence
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Clean with warm soapy water and a soft brush or cloth.
Clean with warm soapy water and a soft brush or cloth. Avoid re-polishing or re-cutting.
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Tourmaline
Green
Red, Pink
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Heated to improve appearance. Surface fissures can be filled with oil or resin.
Heated and irradiated to improve color.
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Clean with warm soapy water and a soft brush or cloth. Avoid sudden temperature changes. Do not use an ultrasonic cleaner or steamer.
Clean with warm soapy water and a soft brush or cloth. Avoid sudden temperature changes and steaming.
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Tsavorite
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None
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Normal gemstone care
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Turquoise
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Permeated with plastic or coated with wax or colorless oil. Dyed to improve color.
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Clean with warm soapy water and a soft brush or cloth. Do not use ultrasonic cleaner or steamer. Avoid contact with cosmetics, hair spray, perfume and household chemicals including acids. Avoid intense heat.
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Varisite
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Impregnated with colorless plastic
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Avoid harsh abrasives.
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Zircon
Blue
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Heated to improve color and intensity
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Avoid ultrasonic cleaning and harsh abrasives.
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