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Cleaning & CareGemstone treatments that QVC does not knowingly accept.

QVC makes every effort to ensure that all items we sell meet our strict quality standards. The chart belowrepresents those gemstone treatments that QVC does not knowingly accept.

To quickly find information on a specific gemstone, click the appropriate link below. Your page will "jump" tothe top of that section.

A - B C - E G - J L - O P - R S T - Z

Return to the chart of gemstone treatments that QVC knowingly accepts.

Gemstone Enhancementmethod

Purpose Frequencyused

Stability Special care

Agate (also seeonyx)

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.

To add color,mask surfacedefects,enhance luster.

OccasionallyPoor toFair

Wipe with adamp soft clothonly.

Alexandrite

Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.

To improveappearance &clarity.

Unknown UnknownWipe with softdamp clothonly.

Amazonite


To improveappearance.


Amber- All

Colors

Coating withlacquer, ink, foil,films & other

appliedsubstances orbaked films.

To add color. UnknownPoor to

Fair

Wipe with softdamp cloth

only.

Amethyst Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.Infilling withglass, plastic orresins.Diffusion usingchemicals

To improveappearance &clarity. Toproduce colorand/orasterism. Toimproveappearance,durability oradd weight.

Unknown Poor toFair

Wipe withdamp soft clothonly.
http://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#A%23Ahttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#C%23Chttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#G%23Ghttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#L%23Lhttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#P%23Phttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#S%23Shttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#T%23Thttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#C%23Chttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#G%23Ghttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#L%23Lhttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#P%23Phttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#S%23Shttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#T%23Thttp://www.qvc.com/jw_gia_no_chart.html?cp=jw_gia_guide&tmp=na&cont=1t#A%23A


2/12

combined withheat. Dyed.

Ametrine

Oiling withcolorless orcolored oil.

Impregnated withwax, naturalresin, ormanmadematerial.Infilling withglass, plastic orresins.

To improve

appearance &clarity. Toimproveappearance,durability oradd weight.

UnknownPoor toFair

Wipe with softdamp clothonly.

Ammolite

Oiling withcolorless orcolored oil.Impregnated withwax, natural

resin, ormanmadematerial.

To improveappearance &clarity.


Andalusite

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.Oiling withcolorless orcolored oil.Impregnated with

wax, naturalresin, ormanmadematerial.


UnknownPoor toFair


Apatite

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.Oiling withcolorless orcolored oil.

Impregnated withwax, naturalresin, ormanmadematerial.




Aquamarine Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.

Infilling withglass, plastic or

To improveappearance &clarity. Toimproveappearance,durability oradd weight.

Unknown Poor toFair



3/12

resins.Dyed.

Aventurine,

Green


appliedsubstances orbaked films.

To add color,mask surface

defects,enhance luster.

Occasionally

Poor to

Fair

Wipe with a

damp soft clothonly.

Beryl

Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.Infilling withglass, plastic or

resins.Dyed.

To improveappearance &clarity. Toimproveappearance,durability oradd weight. Toadd color,mask surfacedefects,enhance luster.

UnknownPoor toFair


Calcite

Coating withlacquer, ink, foil,film or otherappliedsubstances orbaked films.

To add color,mask surfacedefects orenhance luster.

UnknownPoor toFair


Carnelian

Coating withlacquer, ink, foil,film or otherapplied

substances orbaked films.

To add color,mask surfacedefects or

enhance luster.

UnknownPoor toFair

Wipe with adamp soft cloth

only.

Cat's-eyeQuartz



UnknownPoor toFair


Chalcedony(often called

agate or onyx)



UnknownPoor toFair


only.

ChromeDiopside

Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.Infilling withglass, plastic orresins.


UnknownPoor toFair


Chrysoberyl Oiling with To improve Unknown Poor to Normal for all


4/12

colorless orcolored oil.Impregnated withwax, naturalresin, ormanmade

material.

appearance &clarity.

Fair varieties listed.

Chrysoprase

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.Dyed.




Citrine

Oiling withcolorless orcolored oil.Impregnated with

wax, naturalresin, ormanmadematerial.Infilling withglass, plastic orresins.Dyed.


UnknownPoor toFair


Coral

Coating withlacquer, ink, foil,film or otherappliedsubstances or

baked films.


UnknownPoor toFair

Avoidchemicals,cosmetics &ultrasoniccleaners.

Coral, Sponge




Avoidchemicals,cosmetics &ultrasoniccleaners.

Diamond,Natural Color white,champagne,

yellow

QVC does notaccept color orclarity treatmentsfor naturaldiamonds with

natural color.

To improvecolor andclarity.

OccasionallyFair toVeryGood

Normal. Clickhere forcleaning andcare

instructions .

Diamond,Treated color -yellow, green,blue, black, pink,green, and fancyhues

QVC does notaccept claritytreatments forcolor-treatednaturaldiamonds.

To improveclarity.

UnknownFair toGood

Normal. Clickhere forcleaning andcareinstructions.

Drusy Quartz

Coating withlacquer, ink, foil,films & otherappliedsubstances or

baked films.



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5/12

Emerald


Dyed.Penetration offissures withcolored oil, waxor resin.

To improveappearance.To add color,mask surface

defects orenhance luster.

UsuallyFair toGood

Avoidtemperaturechanges,steaming,

chemicals &ultrasoniccleaners.

Fluorite





Garnet

Coating with

lacquer, ink, foil,films & otherappliedsubstances orbaked films.Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.

To improveappearance.To produce orimprove acolor.

UnknownPoor toFair


Hematite





Howlite

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.Infilling with

glass, plastic orresins.Diffusion usingheat andchemicals.Dyed.

To improveappearance,durability oradd weight. Toadd color,mask surface

defects orenhance luster.To improve orproduce color.



only.

Jade, Jadeite




Wipe with adamp clothonly.

Jade, Nephrite Coating withlacquer, ink, foil,

To add color,mask surface

Occasionally Poor toFair



6/12

films & otherappliedsubstances orbaked films.

defects,enhance luster.

only.

Jasper

Coating with

lacquer, ink, foil,film or otherappliedsubstances orbaked films.


UnknownPoor toFair


Jet





Kyanite

Coating with

lacquer, ink, foil,films & otherappliedsubstances orbaked films.




Labradorite





Lapis Lazuli -Denim Lapis





Malachite




Avoidchemicals &ultrasoniccleaners.

Moonstone - AllColors

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.Infilling with

glass, plastic orresins.

To improveappearance,durability oradd weight. Toadd color,mask surfacedefects orenhance luster.To improveappearance &clarity.

UnknownPoor toFair



7/12

Morganite (Pink

Beryl)

Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, or

manmadematerial.Infilling withglass, plastic orresins.Dyed.

To improveappearance &clarity. Toimproveappearance,durability or

add weight. Toadd color,mask surfacedefects,enhance luster.

UnknownPoor to

Fair

Wipe withdamp soft cloth

only.

Mother-of-pearl





Mother-of-pearlWatch Dial

Coating with inkor foil.




Obsidian





Onyx (see alsoagate)

Coating withlacquer, ink, foil,

films & otherappliedsubstances orbaked films.

To add color,

mask surfacedefects,enhance luster.



Opal

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.Oiling withcolorless orcolored oil.

Impregnated withwax, naturalresin, ormanmadematerial.Impregnated withcolorless oil,wax, and resins.

To improveappearanceand clarity. Toadd color,

mask surfacedefects,enhance luster.

RarelyFair to

Good


only.

Pearl - CulturedAkoya, CulturedFreshwater

Coating withlacquer, ink, foil,films & otherappliedsubstances or

baked films.





8/12

Peridot

Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, or

manmadematerial.Infilling withglass, plastic orresins.

To improveappearance,durability oradd weight. To

improveappearance &clarity.

Rarely GoodWipe with adamp soft cloth

only.

Prehnite





Quartz

Coating with

lacquer, ink, foil,films & otherappliedsubstances orbaked films.Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.

To add color,mask surfacedefects,enhance luster.To improveappearance &clarity.



Quartz - Cat's-eye, Tiger's-eye,Hawk's-eye,Drusy





Quartzite





Rhodochrosite





RhodoliteGarnet

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.Oiling with

colorless orcolored oil.

To improveappearance.To produce orimprove acolor.

Unknown Poor toFair



9/12

Impregnated withwax, naturalresin, ormanmadematerial.

Rhodonite

Coating withlacquer, ink, foil,film or otherappliedsubstances orbaked films.Dyed.

To add color,mask surfacedefects orenhance luster.To even outcolor.

UnknownPoor toFair

Wipe with adamp soft clothonly. Avoidchemicals &ultrasoniccleaners.

Ruby

Intentional fillingof surfacecavities andfractures with aforeign material,including glass

and easily visibleunder 10 Xmagnification.Oiling withcolorless orcolored oil, wax,natural resin, ormanmadematerial.Dyed withcolored oil.Irradiation.

To improveapparent clarityandappearance.To changecolor.

CommonPoor toFair

Fracture fillings

in ruby arefragil. Avoidrepolishing orrecutting. Avoidchemicals &ultrasoniccleaners.

Sapphire - AllColors

Intentional filling

of surfacecavities andfractures with aforeign material,including glassand easily visibleunder 10 Xmagnification.Oiling withcolorless orcolored oil, wax,natural resin, ormanmadematerial.Dyed withcolored oil.Irradiation.

To improveapparent clarityandappearance.To changecolor.

CommonPoor toFair

Fracture fillingsin sapphire arefragil. Avoidrepolishing orrecutting. Avoidchemicals &ultrasoniccleaners.

Sard





Shell - Abaloneand Other


appliedsubstances or

To add color,mask surfacedefects,

enhance luster.




10/12

baked films.

Sodalite

Coating withlacquer, ink, foil,films & otherapplied



enhance luster.



only.

Spinel

Coating withlacquer, ink, foil,films & otherappliedsubstances orbaked films.Oiling withcolorless orcolored oil.Impregnated withwax, natural

resin, ormanmadematerial.




Sugilite



UnknownPoor toFair

Wipe with softdamp cloth only

Sunstone


appliedsubstances orbaked films.Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.




Tanzanite(Zoisite)

Coating withlacquer, ink, foil,

films & otherappliedsubstances orbaked films.Oiling withcolorless orcolored oil.Impregnated withwax, naturalresin, ormanmadematerial.


UnknownPoor toFair


Topaz - All

Colors

Oiling with

colorless orcolored oil, wax,

To improve

appearance &clarity. To

Unknown Poor to

Fair

Wipe with soft

damp clothonly.


11/12

natural resin, ormanmadematerial for allcolors listed.Infilling withglass, plastic or

resins for allcolors listed.

improveappearance,durability oradd weight.

Tiger's-eyeQuartz, Brown,Red





Tourmaline

Oiling withcolored oil, wax,natural resin, ormanmade

material for allcolors listed.Infilling withglass, plastic orresins for allcolors listed.Diffusion usingchemicalscombined withheat.Dyed.

To improveappearance &clarity. Toimproveappearance,durability oradd weight. Toimprove color.



Turquoise

Impregnated withcolorless oil orwax.Painted orlacquered withblack lines.Dyed.

To enhance orcreate color.To simulatematrix.

CommonlyPoor toFair

Avoid exposingturquoise

jewelry to hotwater &householdchemicals.Very specialcare required.Wipe gentlywith soft dampcloth only.

Unakite

Coating withlacquer, ink, foil,films & otherapplied



enhance luster.



Varisite





Zircon - Allcolors

Oiling withcolorless orcolored oil, wax,natural resin, or

manmadematerial for all

To improveappearance &clarity. Toimprove

appearance,durability or

Unknown Poor toFair



12/12

colors listed.Infilling withglass, plastic orresins for allcolors listed.

add weight.

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