Loupewise

Optisch Karakter van Edelstenen — Polariscooptabel

Optisch karakter van 132 soorten — 34 enkelbrekend, 75 dubbelbrekend en 23 aggregaten — met ADR-markering en dubbelbreking. Tussen gekruiste polarisatoren blijft een SR-steen donker, licht een DR-steen vier keer per omwenteling op en blijft een aggregaat licht. Gegroepeerd: eerst SR, dan eenassig, tweeassig en aggregaten.

De edelsteennamen staan in hun internationale handelsvorm (Engels) en linken naar de detailpagina van elke soort (in het Engels).

Voer je meting in Loupewise in — de engine beperkt automatisch de kandidaten. De app is beschikbaar in het Nederlands.

Probeer Loupewise Gratis →
EdelsteenOptisch KarakterADRDubbelbrekingRI-bereik
Almandine GarnetSR✓—1.770–1.830
AmberSR✓—1.539–1.545
Black OpalSR——1.440–1.460
Black SpinelSR✓—1.712–1.730
Blue DiamondSR✓—2.417
Brown DiamondSR✓—2.417
Color-Change GarnetSR✓—1.740–1.765
Cubic ZirconiaSR✓—2.150–2.180
CupriteSR——2.849
Demantoid GarnetSR✓—1.880–1.895
DiamondSR✓—2.417
Fire OpalSR——1.370–1.470
FluoriteSR——1.432–1.436
Grossular GarnetSR✓—1.734–1.759
HackmaniteSR——1.483–1.487
HauyneSR——1.494–1.509
Hessonite GarnetSR✓—1.730–1.760
JetSR——1.640–1.680
Low-Type ZirconSR——1.780–1.815
Malaya / Umbalite GarnetSR✓—1.730–1.780
MoldaviteSR——1.480–1.510
ObsidianSR✓—1.480–1.510
OpalSR——1.370–1.470
Pink DiamondSR✓—2.417
Pyrope GarnetSR✓—1.730–1.760
Rhodolite GarnetSR✓—1.740–1.770
Spessartite GarnetSR✓—1.790–1.815
SphaleriteSR——2.369–2.371
SpinelSR✓—1.712–1.736
Star GarnetSR✓—1.770–1.830
Synthetic SpinelSR✓—1.725–1.728
Tsavorite GarnetSR✓—1.730–1.760
YAGSR——1.833
Yellow DiamondSR✓—2.417
AmethystEenassig (+)—0.0091.544–1.553
AmetrineEenassig (+)—0.0091.544–1.553
BenitoiteEenassig (+)—0.0471.757–1.804
CassiteriteEenassig (+)—0.0961.997–2.093
CinnabarEenassig (+)—0.3512.905–3.256
CitrineEenassig (+)—0.0091.544–1.553
MoissaniteEenassig (+)—0.0432.648–2.691
PhenakiteEenassig (+)—0.0161.654–1.670
PrasioliteEenassig (+)—0.0091.544–1.553
Rock CrystalEenassig (+)—0.0091.544–1.553
Rose QuartzEenassig (+)—0.0091.544–1.553
Smoky QuartzEenassig (+)—0.0091.544–1.553
ZirconEenassig (+)—0.0591.925–1.984
ApatiteEenassig (−)—0.0061.628–1.649
AquamarineEenassig (−)—0.0061.577–1.583
CalciteEenassig (−)—0.1721.486–1.658
Chrome TourmalineEenassig (−)—0.0181.624–1.660
Color-Change SapphireEenassig (−)—0.0081.762–1.770
EmeraldEenassig (−)—0.0061.565–1.602
GosheniteEenassig (−)—0.0061.577–1.583
Green TourmalineEenassig (−)—0.0181.616–1.650
HeliodorEenassig (−)—0.0061.568–1.580
HematiteEenassig (−)—0.2802.940–3.220
IndicoliteEenassig (−)—0.0181.624–1.644
MorganiteEenassig (−)—0.0081.572–1.600
Padparadscha SapphireEenassig (−)—0.0081.762–1.770
Paraiba TourmalineEenassig (−)—0.0181.624–1.644
Pink SapphireEenassig (−)—0.0081.762–1.770
Red BerylEenassig (−)—0.0071.564–1.574
RhodochrositeEenassig (−)—0.2201.600–1.820
RubelliteEenassig (−)—0.0181.624–1.644
RubyEenassig (−)—0.0081.762–1.770
SapphireEenassig (−)—0.0081.762–1.770
ScapoliteEenassig (−)—0.0201.540–1.572
Star RubyEenassig (−)—0.0081.762–1.770
Star SapphireEenassig (−)—0.0081.762–1.770
SugiliteEenassig (−)—0.0021.607–1.610
Synthetic Color-Change CorundumEenassig (−)—0.0081.762–1.770
TaaffeiteEenassig (−)—0.0041.719–1.723
TourmalineEenassig (−)—0.0201.624–1.644
Watermelon TourmalineEenassig (−)—0.0181.616–1.650
White SapphireEenassig (−)—0.0081.762–1.770
Yellow SapphireEenassig (−)—0.0081.762–1.770
AlexandriteTweeassig (+)—0.0091.746–1.755
Cat's Eye ChrysoberylTweeassig (+)—0.0091.746–1.755
Chrome DiopsideTweeassig (+)—0.0301.664–1.730
ChrysoberylTweeassig (+)—0.0091.746–1.755
ClinohumiteTweeassig (+)—0.0281.625–1.675
DiasporeTweeassig (+)—0.0481.702–1.752
EnstatiteTweeassig (+)—0.0101.663–1.673
HiddeniteTweeassig (+)—0.0161.660–1.676
KunziteTweeassig (+)—0.0161.660–1.676
LabradoriteTweeassig (+)—0.0111.559–1.573
LarimarTweeassig (+)—0.0401.595–1.640
PeridotTweeassig (+)—0.0361.654–1.690
PrehniteTweeassig (+)—0.0301.611–1.665
RhodoniteTweeassig (+)—0.0141.716–1.752
SpheneTweeassig (+)—0.1001.843–2.110
Star DiopsideTweeassig (+)—0.0301.664–1.721
TanzaniteTweeassig (+)—0.0091.691–1.700
ThuliteTweeassig (+)—0.0091.691–1.704
TopazTweeassig (+)—0.0081.609–1.643
AmazoniteTweeassig (−)—0.0081.514–1.530
AndalusiteTweeassig (−)—0.0101.629–1.649
DanburiteTweeassig (−)—0.0061.627–1.636
GrandidieriteTweeassig (−)—0.0331.590–1.623
IoliteTweeassig (−)—0.0121.540–1.560
KornerupineTweeassig (−)—0.0131.660–1.699
KyaniteTweeassig (−)—0.0161.712–1.734
MalachiteTweeassig (−)—0.2541.655–1.909
MoonstoneTweeassig (−)—0.0081.518–1.526
Rainbow MoonstoneTweeassig (−)—0.0111.559–1.572
SinhaliteTweeassig (−)—0.0381.665–1.712
SunstoneTweeassig (−)—0.0101.537–1.572
VarisciteTweeassig (−)—0.0311.560–1.594
AgateAggregaat——1.530–1.543
AventurineAggregaat——1.544–1.553
BloodstoneAggregaat——1.530–1.543
CarnelianAggregaat——1.530–1.543
ChalcedonyAggregaat——1.530–1.543
CharoiteAggregaat——1.550–1.559
ChrysocollaAggregaat——1.575–1.635
Chrysocolla ChalcedonyAggregaat——1.530–1.543
ChrysopraseAggregaat——1.530–1.543
CoralAggregaat——1.486–1.658
Hawk's EyeAggregaat——1.544–1.553
HowliteAggregaat——1.583–1.608
IvoryAggregaat——1.535–1.540
JadeiteAggregaat——1.654–1.688
Lapis LazuliAggregaat——1.500–1.670
NephriteAggregaat——1.600–1.627
OnyxAggregaat——1.530–1.543
PearlAggregaat——1.520–1.690
PietersiteAggregaat——1.534–1.540
SerpentineAggregaat——1.560–1.571
SodaliteAggregaat——1.483–1.487
Tiger's EyeAggregaat——1.544–1.553
TurquoiseAggregaat——1.610–1.650

Welke edelstenen tonen anomale dubbelbreking (ADR)?
22 soorten in deze tabel dragen de ADR-markering, vooral de granaten en diamant. Een SR-steen met inwendige spanning kan een vlekkerige uitdoving tonen die het DR-knipperen nabootst: bevestig met de refractometer voordat u SR-kandidaten schrapt.

Is diamant enkel- of dubbelbrekend?
Enkelbrekend (kubisch stelsel), maar gemarkeerd als ADR: inwendige spanning geeft in de polariscoop heel vaak een anomale uitdoving. Juist die combinatie is kenmerkend voor diamant.

Wat betekenen eenassig en tweeassig?
Eenassige stenen (tetragonaal, hexagonaal, trigonaal: kwarts, korund, toermalijn) hebben één optische as; tweeassige (orthorhombisch, monoklien, triklien: topaas, peridoot, tanzaniet) hebben er twee.Elke soort draagt een teken, + of −.

Zie ook: Reference Database (EN) · Guide (EN)