GEM NAME COLORS HARD- TOUGHNESS NESS NOTES AMBER YW, BR, GN, OR, RD 2-2.5 POOR AVOID HEAT, FLAME, ACIDS, CAUSTICS, ALCOHOL, PERFUME, CLEANERS APATITE PK,YW,GN,BL,VL 5 FAIR BRITTLE. AVOID ACID. SYNTHETIC IN TRADE. COMPOSES BONE. ARAGONITE CL, GN,VARI 3.5-4 POOR SOFT, BRITTLE, AVOID ACIDS. COMPOSES PEARLS, M-O-P, MARBLE BERYL GROUP 7.5-8 EMERALD DEEP GR-YW/GN 7.5-8 POORGOOD BRITTLE, STONE HAS INCLUSIONS. AVOID: HEAT,CLEANERS, SOLVENTS AQUAMARINE Lt – Dk BL, B/G 7.5-8 GOOD AVOID HEAT & USE CAUTION IF IT HAS LIQUID INCLUSIONS & FEATHERS. BIXBIT GOOSEBERRY RED GOOD GOLDEN BERYL LEMON/YWGOLD/YW GOOD INCLUSIONS RARE. DECOLORIZATION AT 482 DEGREES F. GOSHENITE COLORLESS GOOD USED AS IMITATION DIAMOND OR EMERALD BY ADDING COLORED FOIL . MORGANITE PINK-VIOLET, SALMON GOOD INCLUSIONS RARE. POOR GEMS IMPROVED BY HEATING ABOVE 752 DEGREES F. AZURITE DK/BL, AZURE/BL CRYSTALS CUT FOR POOR-FAIR “SPECIMEN”, ONLY. MASS MATERIAL CAN BE USED. AZURITE BLOCK DK & AZURE BLUE AZURITE, IN MATRIX BU, GN,RD,CREAM 3.5-4 4+ POOR-FAIR MAN-MADE. BLUE AZURITE & GREEN MALACHITE MIXED IN RESIN. FAIRGOOD MIX OF AZURITE, MALACHITE, CUPRITE & OTHER COPPER MINERALS. CALCITE CL, BL,BN,YW,VARI CHALCEDONY BLUISH, WT, GY CARNELIAN FLESH RED-BROWN RED GOOD TODAY MOST IS DYED & THEN HEAT TREATED. SARD REDDISH BROWNBROWN GOOD TODAY MOST “SARDS” ARE DYED. CHRYSOPRASE GREEN-APPLE GREEN GOOD SUNLITE & HEAT CAN FADE COLOR. MAY RECOVER IN MOIST STORAGE HELIOTROPE OPQ.DK/GN W/RED SPOTS GOOD AKA: BLOODSTONE DENDRITIC AGATE CL-WHTISH/GY W/DK. DENDRITES MOSS AGATE CL W/ GN, BN, RED INCLUSIONS AGATE 3 6.5-7 GOOD ALL COLORS & PATTERNS PETRIFIED WOOD, BONE, ETC. WARM COLORS W/PATTERNS CHAROITE LILAC-VL, “FLAMED” SOFT, BRITTLE, CLEAVES AKA ONYX, HEAT MAY CHANGE COLOR EASILLY TAKES COLOR DYES. AKA: SCENIC AGATE, MOSQUITO STONE, PICTURE AGATE, ETC. ALL COLORS, BANDED JASPER POOR GOOD MANY ARE CHEMICALLY COLORED, CAN INCLUDE CRYSTALS. MANY VARIETIES ARE NAMED BY THEIR COLOR, PATTERNS, AND/OR ORIGIN. GOOD CONSIDERED CHALCEDONY, BUT STRUCTURE IS SLIGHTLY DIFFERENT. VARIETIES ARE NAMED BY THEIR COLORS, PATTERNS, AND/OR ORIGIN. ORIGINAL STRUCTURES REPLACED BY AGATE, JASPER, OPAL. 5-6 NEW MINERAL, FROM SIBERIA. RECOGNIZED 1978. CHRYSOBERYL GD/Y,GN/Y,GN,RD,BN. 8.5 CHRYSOBERYL CAT’S EYE 8.5 ALEXANDRITE CHRYSOCOLLA CHANGES GN-RED GREEN, BLUE 8.5 2-4 EXCELENTGOOD EXCELENT- THE ONLY REAL CATS’ EYE”. OTHERS GOOD MUST NAME GEM. AVOID HEAT. GOOD DAYLITE=GREEN & INCANDESCENT=RED, SENSITIVE TO KNOCKS. HIGH HEAT CAN CAUSE COLOR CHANGES. ONE OF THE MOST EXPENSIVE GEMS . POOR SOFT, BRITTLE ANCIENT GEM. SILICIFIED GEM INTERTWINED WITH AZURITE, MALACHITE, AND OTHER COPPER BASED GEMS. CHRYSOPHRASE SEE CHALCEDONY CINNABAR RED, PALE BLUE 2-2.5 POOR MOST COMES FROM CHINA AND IS CARVED, LACQUERED WOOD. REAL CINNABAR IS POISONOUS MERCURY ORE W/DROPS OF LIQUID MERCURY. CORAL RD,PK,WT,BK,BL 3-4 FAIRGOOD AVOID HEAT, FLAME, & ACID. MOST CHINESE IS DYED & CAN FADE. GEM NAME COLORS HARD TOUGH-NESS NESS NOTES AVOID HEAT W/IRRADIATED STONES. AVOID HEAT & SOLVENTS W/ OILED OR DYED GEMS. BORAX ETCHES SURFACE. . ALL COLORS 9 EXCELENT (EXCEPT FRACTURED STONES) RUBY VARYING REDS 9 EXCELENT ““““. SAPPHIRE ALL EXCEPT RED 9 EXCELENT ““““. CORUNDUM GROUP DIAMOND CL & ALL 10 GOODCAN CLEAVE IF EDGE IS EXCEPTIONA KNOCKED. HIGH HEAT L CAN ETCH FACES. DIAMONDCOLORED& ALL 10 GOODHEAT ALTERS COLOR IN EXCEPTIONA NATURAL GREEN & ALL L IRRADIATED . DOLOMITE NONE, PASTELS 3.5-4 FAIR EASILLY DYED, AVOID ACIDS MOST IS DYED & GIVEN TRADE NAMES. . DIOPSIDE GN,YW,BK,NONE 5-6 FAIR-POOR CLEAVES EASILLY . BLACK 5-6 FAIR-POOR 4 POINTED STAR, CLEAVES . CHROME DIOPSIDE EMERALD GN 5-6 FAIR-POOR CLEAVES . DIOPTASE EM/GN-BL/GN 5 FAIR BRITTLE. DUMORTIERITE DK/BL-VL/BL, RD/BN 7-8.5 FAIR STAR DIOPSIDE FELDSPAR GROUP AMAZONITE MOST. GN, BL/GN 6-6.5 6-6.5 POOR CLEVAGE PERFECT & IN 2 DIRECTIONS. HEAT MAY CRACK OR CLEAVE . POOR MOTTLED OR EVEN COLOR. IMPORTANT GEM IN MORACCO & No..AFRICA MOONSTONE CL, YW, WT. 6-6.5 POOR VITRIOUS LUSTER W/BLUE FLASHES. SENSITIVE TO PRESSURE. . ORTHOCLASE OP. CHAMPAIGN 6-6.5 POOR VITRIOUS LUSTER. . LABRADORITE DK/GY-GY/BK 6-6.5 POOR AKA SPECTROLITE. COLORFU L METALIC PLAY OF COLOR, BRITTLE. . SUNSTONE OR, RD/BN 6-6.5 POOR AKA AVENTURINE FELDSPAR. BRITTLE. . FLUORITE CL, ALL 4 POOR CLEAVES EASILLY. BRITTLE, AVOID HEAT, FLAME, SULFURIC ACID. . GARNET GROUP ALL COLORS 6.57.5 FAIR-GOOD AVOID THERMAL SHOCK. PYROPE RED [W/BRN TINT] RHODOLITE ROSE VAR. PYROPE IMITATIONS MADE OF RED GLASS ALMANDINE RED W/VIOLET TINT SPESSARTINE ORANGE-RED/BROWN GROSSULAR CL, GREEN,YELLOW,BROWN HESSONITE RED/BROWN AKA CINNAMON STONE OPQ/GREEN, DENSE OPAQUE GREEN AKA: AFRICAN JADE, TRANSVAL JADE . HYDROGROSSULA R AKA: TSAVOLITE TSAVORITE GREEN-EMERALD/GREEN ANDRADE [VAR.] BLACK,BROWN,YELLOW/BROW N DEMANTOID GREEN-EMERALD/GREEN THE MOST VALUABLE GARNET MELANITE OPAQUE BLACK USED FOR MOURNING JEWELRY. CONFUSED WITH BLACK GLASS. . TOPAZOLITE YELLOW-LEMON/YELLOW UVAROVITE EMERALD GREEN GASPEITE OPQ. LT/GREEN GNEISS GY,GRNISH,BRNISH, REDISH GOLD IN QUARTZ GOLDSTONE GYPSUM 4.5-5 2.5-3 +7 GOLD & WHITE GOLD, BLUE 6 WT,YISH,PK,BLUISH GEM NAME: COLORS: 2 VITRIOUS LUSTER GOOD A ROCK, BLACK & WHITE, COMPOSED OF QUARTZ & FELDSPAR. USED IN AFRICA & BY ANCIENT CIVILIZATIONS GOOD CRYSTALINE GOLD FINGERS IN MILKY QUARTZ MATRIX. . GOOD MAN MADE. COPPER & BRASS FILINGS IN COLORED GLASS. AKA. AVENTURINE GLASS. POOR AKA:SELENITE. FIBEROUS, SILKY LUSTER. VERY HEAT & ACID SENSITIVE HARDNESS TOUGHNESS: NOTES : HEMATITE METALIC BK/GY 5.5-6.5 EXCELENT HEAVY, IRON BASED GEM. FORMERLY USED AS MOURNING JEWELRY. HEMATINE METALIC BK/GY 5.5-6.5 EXCELENT TRADE NAME FOR SYNTHETIC HEMATITE. SLIGHTLY MAGNETIC. POOR W/ BLACK &/OR DK/BROWN VEINS. SOFT & POROUS, DYES EASILY. HOWLITE SNOW WHITE 3-3.5 HOWLITE TURQUOISE OR LAPIS DYED TO SIMULATE TURQUOISE AND LAPIZ. IOLITE FAIR AKA: CORDIERITE, “WATER SAPPHIRE”. COLOR CHANGE BY AXIS VIEWED. CLEAVAGE 1DISTINCT. HEAT MAY FUSE STONE. ATTACKED BY ACIDS. 2-3 FAIR ORGANIC. HEAT SHRINKS & DISCOLORS. ATTACKED BY CHEMICALS .AVOID SOLVENTS. YELLOWS WITH AGE. PERFUME,LOTIONS, ETC .CAUSE DISCOLORATION 6.5-7 AVOID HEAT, MAY DEGRADE EXCEPTIONA COLOR. FUSES EASILY. AVOID L ACIDS & STRONG SOLVENTS. DYED: MAY FADE. IVORY BL,VL,BRNISH WHITE, CREAMY 7-7.5 JADE GROUP JADEITE GN & ALL COLORS IMPERIAL JADE EMERALD GREEN NEPHRITE JADE MOST VALUABLE JADE.. GREEN & ALL 6-6.5 EXCEPTIONA L JET DEEP/BK, DK/BN 2.5-4 POOR GEM COAL.. AVOID HEAT, BURNS EASILY. USED IN MOURNING JEWELRY. KYANITE BL-CL,BL/GN 4-4.5 / 6-7 POOR BRITTLE, CLEAVES, VARIABLE HARDNESS & CLEAVAGE. . FAIR A ROCK INCLUDING: LAZURITE, CALCITE, PYRITE, & OTHER MINERALS. AVOID HEAT: MAY CAUSE COLOR CHANGE, AVOID LAPIZ LAZULI BL, VL.,GRNISH/BL 5-6 CHEMICALS., IF DYED, MAY FADE AND AVOID ACID, ACETONE AND OTHER SOLVENTS. LEPIDOLITE PK, LILAC,YISH,WT 2.5-3 MALACHITE LT-BK/GN, BANDS MARBLE YW/GN,WT,BN,STRIPE 3.5-4 S MOLDAVITE GREENS MOTHEROF-PEARL OBSIDIAN OPAL GROUP MANY BK,GY,BN,GN ALL, W/OPALESCENCE 3.5-4 5.5 2.5-3.5 5-5.5 5-6.5 POOR FOUND WITH TOURMALINE INCLUSIONS. POOR SENSITIVE TO HEAT, ACIDS, AMMONIA, HOT WATERS, AND CHEMICALS.FUSES EASILY BY TORCH. DUST IS POISONOUS. FAIR AKA:MEXICAN ONYX, HONEY ONYX. AVOID ACID. POROUS-DYES EASILY GOOD A GREEN TEKTITE. NATURAL “IMPACT GLASS”, OR MAYBE A METEORITE. GOOD AVOID HEAT & ACIDS, BLACKENS IN FLAME, DYES EASILY / CAN FADE. . GOOD A ROCK. NATURAL VOLCANIC GLASS. CAN HAVE GOLD, SILVER, OR RAINBOW SHEEN. SNOWFLAK E HAS WHITE SPHERES OF CHRISTOBOLITE . POOR-FAIR HEAT TURNS STONE WHITE OR BROWN & DESTROYS PLAY OF COLORS. AVOID THERMAL SHOCK. HEAT & STRONG LIGHT DEHYDRATE STONE CAUSING CRAZING OR FRACTURING. SENSITIVE TO PRESSURE &KNOCKS, ACIDS & ALKALIES. OPALESCENCE, RAINBOW LIKE IRRIDESCENCE, & PLAY OF COLORS. PRECIOUS OPAL WHITE OPAL BLACK OPAL WHITE W/”FIRE” WHITE BASE WITH PLAY OF COLORS DK COLOR BASE DK/GREY, DK/BLUE, DK/GREEN, & GREY-BLK BASE W/ PLAY OF COLORS DEEP BLACK IS VERY RARE. BLACK OPALS ARE RARER THAN WHITE . OPAL MATRIX HARLEQUI N OPAL BANDS OR INCLUSIONS OF OPAL IN MATRIX ROCK TRANSPARENTTRANSLUCENT W/EFFECTIVE SEGMENTED COLOR PATTERNS. A MOST DESIRABLE OPAL. BLUISHJELLY OPAL GREY W/LITTLE PLAY OF COLOR. FIRE OPAL COMMON OPAL GEM NAME PEARL ORANGE LITTLE OPALESCENCE. USUALLY MILKY & TURBID. BEST ARE CLEAR & TRANSPARENT. VERY SENSITIVE TO ANY STRESS & HEAT. ALL COLORS USUALLY OPAQUE AND NO PLAY OF COLOR. PERUVIAN PINK & BLUE COLORS WHITE & MANY HARDNES S TOUGHNES S NOTES 2.5-4.5 USUALLY GOOD BUT VARIABLE THIN NACRE MAY CHIP OR FRACTURE EASILY. AVOID HEAT & ACIDS. MOST WHITES ARE BLEACHED. MODERATE HEAT & STRONG LIGHT PROMOTE DEHYDRATION & CRACKING. SOME DYE COLORS MAY FADE NATURAL PEARL PRODUCED WITHOUT OUTSIDE HELP. RARELY ROUND. HISTORICALLY FRO M SEA AND FRESHWATER MOLUSKS. CULTURED PEARLS PRODUCED BY INSERTING A “SEED” INTO THE MOLLUSK. SALTWATER C.P. PRODUCED BY INSERTING A SHELL OR SHAPED BEAD INTO A SALTWATER MOLLUSK & RAISED IN SALTWATER “FARMS”. LAYERS OF NACRE OVER CENTER BEAD. HIGHEST % OF ROUND PEARLS. FRESHWATER C.P. PRODUCED BY INSERTING A PIECE OF TISSUE INTO THE MOLLUSK AND RAISED IN FRESHWATER POND. F.W.PEARL IS ALMOST SOLID NACRE. MABE PEARL AKA: BLISTER PEARL. PRODUCED BY ATTACHING A BEAD OR SHAPED OBJECT TO THE SHELL OF A MOLLUSK & ALLOW IT TO BE COVERED WITH WITH NACRE. THE PEARL IS CUT FROM THE SHELL, FILLED, & BACKED. . PERIDOT YW/GN, OLIVE, BN 6.5-7 FAIR-GOOD AKA: OLIVINE, CHRYSOLITE. AVOID ACIDS & HEAT. TENDS TO BURST UNDER GREAT STRESS. FACET EDGES CHIP EASILLY. CATS’-EYE AND STAR PERIDOT ARE POSSIBLE AND RARE PYRITE BRASS/YW-GY/YW 6-6.5 FAIR-POOR .AKA: “FOOLS’ GOLD”, WRONGLY CALLED MARCASITE. BRITTLE. QUARTZ GROUP MOST COLORS 7 GOOD AVOID THERMAL SHOCK. BRITTLE. ROCK CRYSTAL COLORLESS 7 CLEAR, CAN HAVE CHEVRONS & OTHER INTERNAL PATTERNS. BROWN-BLACK,SMOKEY SMOKEY QUARTZ GREY AKA: MORION & CAIRNGORM. CALLED “SMOKEY TOPAZ”. HEAT FADES . AMETHYST VIOLET AVOID STRONG LIGHT (FADES) & HEAT (FADES, &/OR BECOMES CITRINE. CITRINE LTDK/YELLOW,RED/BROW N HEAT FADES AMETRINE VIOLET & YELLOW MIX OF AMETHYST & CITRINE. MILK QUARTZ OP. WHITE AKA: SNOW QUARTZ, WHITE QUARTZ. LEEK-GREEN PRODUCED BY HEATING VL AMETHYST OR YWISH QUARTZ. SUN FADES. PRASIOLITE ROSE QUARTZ STRONG-PALE PINK COLOR CAN FADE. RUTILE INCLUSIONS CAN PRODUCE A 6 POINT STAR.. RUTILATED QUARTZ GOLDEN, REDDISH QUARTZ CRYSTAL W/ RUTILE NEEDLE INCLUSIONS. TOURMALINATE D QUARTZ. CLEAR W/GN OR BK QUARTZ CRYSTAL W/ BLACK OR GREEN TOURMALINE NEEDLES. . AVENTURINE GREEN, RED/BROWN, GOLD/BROWN IRIDESCENT SPARKLES. TRADE NAME: “INDIAN JADE”. PRASE LEAK-GREEN OPAQUE AGREGATE. AKA: EMERALD QUARTZ. BLUE QUARTZ BLUE TURBID AGREGATE. AKA: SAPPHIRE QUARTZ. LEMON QUARTZ YELLOW/GREEN GEM NAME: COLORS: RHODOCHROSITE ROSE/REDYELLOWISH RHODONITE DK/RDFLESH/RD FOWLERITE HARDNESS: TOUGHNESS: NOTES 4 5.5-6.5 FAIR STRIPED. STALAGTITE FORMED. GOOD BLACK DENDRITIC INCLUSIONS. CAN BE PINK/GREY. BROWNISH OR YELLOWISH TINT RUBY IN ZOISITE SCAPOLITE SEE ZOISITE YW, PK,VL, CL 5.5-6 POOR VITRIOUS LUSTER. CATS’EYES ARE KNOWN. SERPENTINE GN, YELLOWISH, BN 2.5-5.5 FAIR SENSITIVE TO ACID. INPROPERLY CALLED A “JADE”. SODALITE WT, BL, GY 5.5-6 GOOD CONFUSED WITH LAPIZ LAZULI. SPHENE YW, BN,GN, REDDISH 55.5 FAIR AKA: TITANITE. HEAT CHANGES COLOR TO RED OR ORANGE. SPINEL ALL 8 GOOD MAY BE BRITTLE. LIGHT COLORS MAY FADE IN INTENSE HEAT. MANY FAMOUS & HISTORIC RUBIES ARE ACTUALLY SPINELS. SPODUMENE GROUP GNS, VTS 6.5-7 POOR AVOID THERMAL SHOCK. FUSES EASILLY UNDER TORCH. COLOR STRONGEST ON AXIS. HIDDENITE KUNZITE SUGILITE YW/GN, GN/YW, EMERALD GN IF IRRADIATED, GREEN FADES IN MINUTES TO HOURS. PINK/VIOLET, LIGHT VIOLET MOST STONES ARE LIGHTLY COLORED AND COMMONLY FADE.BROWNISH AND GREEN/VIOLET COLORS CAN BE IMPROVED BY HEATING TO 300 deg.F. VIOLET 5.5-6.5 GOOD TANZANITE TIGER’S EYE TRANSLUCENT TO OPAQUE. SEE ZOISITE GD/YW, GD/BN 6.5-7 GOOD HAS A WAVY EYE EFFECT. AVOID THERMAL SHOCK. RED IS DYED. HAWK’S EYE BLUE/GRAY, BLUE/GREEN SAME EFFECT AS TIGER’S EYE. SENSITIVE TO ACID. TIGER IRON GD/YW, GD/BN, REDS AKA: TIGER’S EYE MATRIX. AGGREGATE LAYERS W/ IRON OXIDE . TOPAZ TOURMALINE GROUP TURQUOISE ALL & CL ALL SKY-BL, BL/GN, POOR YELLOW WITH RED TINT.IS MOST COMMON, PINK TO REDDISH-ORANGE YELLOWISH-BROWN GEMS. THERE IS NATURAL BLUE TOPAZ, BUT MOST BLUE STONES ARE COLORLESS TOPAZ THAT HAS BEEN IRRADIATED & THEN HEATED. AVOID THERMAL SHOCK. LIGHT BLOWS CAN CAUSE CLEAVAGE. HEAT MAY CAUSE COLOR CHANGE OR FADING. CITRINE & SMOKEY QUARTZ ARE WRONGLY CALLED TOPAZES. 7-7.5 FAIR MOST CRYSTALS HAVE MORE THAN ONE COLOR. “WATERMELON” HAS A RED INTERIOR & A GREEN EXTERIOR. DEEP PINK & GREEN ARE THE MOST DESIREABLE. TOURMALINE CATS’-EYES OCCUR. AVOID THERMAL SHOCK. COLOR CHANGES PRODUCED BY IRRADIATION ARE NOT PERMANENT. HEAT CAN CAUSE SOME GREENS TO CHANGE COLOR.LATELY, VARIETY NAMES ARE BEING DROPPED AND STONES ARE CALLED “TOURMALINE”, PRECEEDED BY THE COLOR NAME. 5-6 ALSO, APPLE-GREEN & BROWNS. USUALLY INCLUDES VEINING &/OR MATRIX. STONE SCRATCHES EASILLY. THE COLOR CAN BE RUINED BY: HEAT, LIGHT, PERSPIRATION, OILS, COSMETICS, & HOUSEHOLD DETERGENTS, AND BY POOR-GOOD THE LOSS OF THE STONE’S WATER CONTENT. MUCH TURQUOISE IS COLORED AND STABLIZED WITH RESINS. SOME STONES HAVE THEIR COLOR STABLEIZED W/ELECTRICITY “WHITE BUFFALO” IS MAGNESITE & NOT TURQUOISE. 8 UNAKITE MIXED GN, PK, WT. VARACITE YW-GN, BLUISH VERDITE LT-DK GREEN ZIRCON GROUP ALL & CL HYACINTH YW, YW/RDRD/BN JARGON STRAW/YWALMOST COLORLESS STARLIGHT BLUE ZOISITE GROUP TANZANITE GOOD OPAQUE GRANITIC ROCK W/FELDSPAR, QUARTZ, EPIDOTE, ETC. . 4-5 FAIR FREQUENTLY INTERMIXED WITH A BROWN MATRIX. 3 FAIR OFTEN SPOTTY. A SERPENTINE ROCK. TRANSLUCENT-OPAQUE. FAIR-POOR KNOWN SINCE ANCIENT TIMES, BUT UNDER NUMEROUS NAMES. HIGH REFRACTIVE INDEX AND STRONG DISPERSION PRODUCES GREAT BRILLIANCE AND INTENSIVE FIRE. BRITTLE AND SENSITIVE TO KNOCKS & PRESSURE. EASY EDGE DAMAGE. HEAT CAN CAUSE COLOR CHANGES. SOME COLORS PRODUCED BY HEATING CAN REVERT TO THE ORIGINAL COLOR WHEN EXPOSED TO LIGHT. CAT’S-EYE 6.5-7.5 CREATED BY HEATING & CAN FADE W/EXPOSED TO UV &/OR SUNLIGHT. . 7-6 TP. SAPPHIRE BL, AMETHYST, VL POOR IN GOOD QUALITY STONES THERE IS A COLOR CHANGE FROM BLUES UNDER DAYLIGHT TO VIOLETS UNDER ARTIFICIAL LIGHT. BY HEATING TO 400-500 deg.C YELLOWISH AND BROWN TINTS VANISH AND THE BLUE DEEPENS. THE GEMS CAN BE BRITTLE, CLEAVES, AND ABRADES EASILY.AVOID HEAT AND THERMAL SHOCK. FUSES UNDER TORCH. TANZANITE CAT’S EYES ARE FOUND. THULITE DENSE, OPAQUE PINK ANYOLITE GREEN W/BLACK & RUBY INCLUSIONS FAIR-GOOD “LAPIZ NEVADA” IS A THULITEDIOPSIDE SKARN ROCK . AKA: RUBY IN ZOISITE. BLACK INCLUSIONS ARE HORNBLEND.
