Carnelian Value, Price, and Jewelry Information - International ...

The best-known and generally least expensive variety of chalcedony is carnelian. It ranges in color from yellow-orange to rich, near reddish orange, ... CarnelianValue,Price,andJewelryInformation viewgemstoneencyclopedia Profile Symbolism Articles Home»Gemstones»CarnelianValue,Price,andJewelryInformation ByHyperdeath(Ownwork)[GFDLorCC-BY-SA-3.0-2.5-2.0-1.0],viaWikimediaCommons Thebest-knownandgenerallyleastexpensivevarietyofchalcedony iscarnelian.Itrangesincolorfromyellow-orangetorich,nearreddishorange,toorangeybrown,andvariesfromsemi-opaquetohighlytranslucent. Carnelian Information Data Value Name Carnelian IsaVarietyof Chalcedony Crystallography Hexagonal(trigonal),microcrystalline. RefractiveIndex 1.535to1.539 Colors Red,orange Hardness 6.5-7 Wearability VeryGood Fracture Uneven Birefringence 0.004 Cleavage None Dispersion None. Luminescence Blue-white LuminescencePresent Yes LuminescenceType Fluorescent Formula SiO2 Pleochroism Absent. Optics Uniaxial(+). OpticSign Uniaxial+ SpecificGravity 2.58-2.64 Enhancements Heating. TypicalTreatments HeatTreatment Transparency Translucenttoopaque Thebest-knownandgenerallyleastexpensivevarietyofchalcedony iscarnelian.Itrangesincolorfromyellow-orangetorich,nearreddishorange,toorangeybrown,andvariesfromsemi-opaquetohighlytranslucent.Ironisthesourceofitscolorandasaresultitcanbeeasilyheattreated,(evenbythesun’sheatalone,)todarkenredtonesastheironisoxidized.Youshouldassume,unlessinformedotherwise,thatanypieceofcarnelianhasbeenenhancedinthisway. Sources MostcommercialcarneliancomesfromIndia,butitisminedworldwide.Gem-qualitysourcesalsoincludeBrazil,Egypt,andUruguay. ByHyperdeath(Ownwork)[GFDLorCC-BY-SA-3.0-2.5-2.0-1.0],viaWikimediaCommons PursueYourPassionforGemstoneswiththeUltimateGemResource StartYourGemEducation by InternationalGemSociety Seeotherarticles RelatedArticles CarnelianSymbolism Carneliansymbolismandloretouchesonhealth,luck,androyalty.However,justwearingthesegemsisn’talwayseffective.Would-bealchemists… PursueYourPassionforGemstoneswiththeUltimateGemResource StartYourGemEducation Articles LatestArticles BuyerBeware:CloserExaminationoftheBurjAlhamalRubyCastsDoubtonits$120MillionValuation April21,2022Anastonishingrecord-breakingroughrubyof8,400carats,weighing2.8kilograms,fromWinza,Tanzaniahasgoneondisplayat… ClarityGradingDiamonds Masteringclaritygradingdiamondstakesalotofexperience.Thisgradingguide,withdefinitions,images,andexamples,canhelpbeginning… XonotliteValue,Price,andJewelryInformation Xonotliteisstrongandcantakeagoodpolish.However,thesegemsareextremelyrare,bothasaspeciesandcutspecimens. JewelryMakingTools:AnIntroduction Jewelrymakingisagreatwaytotapintoyourcreativeside.Learnwhatjewelrymakingtoolsyou’llneedtogetstarted. Russia’sInvasionofUkraineMayFurtherPushConsumersTowardLabGrownDiamondsToAvoidRussianConflictDiamonds April15,2022A3DrenderingofHPHTequipment.PhotoCredit:Shutterstock/LoveEmployeeTheUKgovernmentrecentlyannouncedaslewofnewsanctions… DiamondRating:ABeginner’sGuide First-timebuyersmaynotunderstandhowdiamondratingworks.Ourguidewillteachyouhowdiamondsaregraded,soyoucanchoosethebestonefor… Forum TopTopics Isitpossibletoresurfaceastarsapphire? 1day ago Gemstoneismyhobby 5days ago Learningeveryday 5days ago Hi.I\'mBrenda. 5days ago Prettyrock-whatisit? 1week ago SubscribetotheFreeIGS NEWSLETTER GETINSTANTACCESS Joinourweeklynewsletter&getafreecopyoftheGemIDChecklist! Joinourmailinglistbelowtodownloada FREE gemIDchecklisttutorial.Seewhat’sinside… Discoverthe17practicalstepstogemstoneidentification(evenifyou’rejustgettingstartedwithgemology) Learnhowyoucanusespecifictoolstogatherdata,makeobservations&arriveatanaccurateID Explorearangeofgemologicaltests…notonlywillyougetfamiliarwiththeprocessbutalsotime-savingshortcuts! GETINSTANTACCESS JoinIGStodayforgreatbenefits! Exclusiveaccesstoourpremiumarticlesandcourses Unlimitedaccesstoourgempricingguide Createyourownlistinginourbusinessdirectory Professionalcertificationcourses Minigemologycourses Participateinourmember-onlyforums Membershipoptions Readytolearnhowtoidentifygemsonyourown? JoinourmailinglistbelowtodownloadaFREEgemIDchecklisttutorial.Seewhat’sinside… GETINSTANTACCESS •Discoverthe17practicalstepstogemstoneidentification(evenifyou’rejustgettingstartedwithgemology) •Learnhowyoucanusespecifictoolstogatherdata,makeobservations&arriveatanaccurateID •Explorearangeofgemologicaltests…notonlywillyougetfamiliarwiththeprocessbutalsotime-savingshortcuts!