Rob's Tumbled Stone Collection
All photos done by me, of specimens I own. [608 stones as of 2016-02-02]

Black Stones...

Jet (Lignite)
(Feels very lightweight.)

Tektite
(Glass from terrestrial debris ejected during meteor impacts.)

Tourmaline (var. Schorl)
A complicated Boron Silicate compound.

Tourmaline
(Rough cabinet specimen.)

Shungite (Graphite)

Apache Tear (Obsidian)
(Rough nodule with polished cut face.)

Apache Tear in Perlite (rough)

Obsidian (Large Specimen.)

Rainbow Obsidian

Obsidian Point

Astrophyllite
(Appears black from a distance, but is complex with gold needles.)
(Also, rough cabinet specimen.)

Stromatolite
(Dark brown with gold whorls.)

Larvikite

Lodestone (magnetic, tumbled) - Magnetite
Fe3O4
Also octahedron cabinet specimen.

Psilomelane
(Ba,H2O)2Mn5O10
(Also rough cabinet specimen.)

Nuummite

Basalt
common extrusive volcanic rock

Hornblende
(Cabinet specimen.)

Biotite (Black Mica)
K(Mg,Fe)3AlSi3O10(F,OH)2
(Cabinet specimen.)

Muscovite (White Mica)
KAl2(AlSi3O10)(F,OH)2
(Cabinet specimens.)

Hypersthene (Orthopyroxene)
(Mg,Fe)SiO3 series
Enstatite is MgSiO3, Ferrosilite is FeSiO3

Nebula Stone

Sphalerite (rough and tumbled)
(Zn,Fe)S (Zinc Iron Sulfide)

Cassiterite
(SnO2) Rough
(Looks similar to, but is heavier than Sphalerite specimen.)

Moqui Marble / Thunderball / Shaman Stone
Found mostly in Navajo Sandstone Formation in Utah. Compacted sandstone encased in iron compounds (ironstone). Hollow iron oxide sphere surrounding a pink sandy core.

Boji Stones (pair, small)
"Female" stones are smooth, "male" are rough.
Boji is a trademarked name for Pop Rocks.

Chalcocite (from Ladysmith Mine, WI)
Cu2S

Manganese
(Cabinet specimen.)

Arfvedsonite
[Na][Na2][Fe++4Fe+++][(OH)2|Si8O22]
(Cabinet specimen.)

Huebnerite on Quartz
MnWO4
(Cabinet specimen.)

Black Kyanite
Al2SiO5
(Cabinet specimen.)

Aegerine/Aegirine (NaFeSi2O6)
(Cabinet specimen.)

Siderite FeCO3
(Cabinet specimen.)

Siderite FeCO3
(Cabinet specimen.)

Wolframite
(Fe,Mn)WO4
(Iron Manganese Tungstate) Rough

Augite
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6
(Cabinet specimen.)

Cerite
Ce+++9Fe+++(SiO4)6[(SiO3)(OH)](OH)3
(Cabinet specimen.)

Pyrolusite var. Polianite
MnO2
(Cabinet specimen.)

Bixbyite
(Cabinet specimen.)

Goethite
Fe+++O(OH)
(Specimen has polished face, rough back.)

Cuprite crystals cabinet specimen.
Cu2O

Axinite Ca2 (Fe++, Mn++. Mg) Al2BO3 Si4O12 (OH)
(Cabinet specimen.)

Acanthite Ag2S
(Cabinet specimen.)

Healer's Gold (Magnetite and Pyrite)

Fluorichterite
(Also two cabinet specimens.)
Quartz...

Quartz Point
SiO2

Aqua Aura Quartz
Quartz exposed to Gold vapor at 1600 degrees in a vacuum. Patented (US 6997014) process.

Titanium Quartz
Similar to Aqua Aura process, using Titanium.

Blood Quartz
Inclusions of red hematite.

Green Actinolite in Quartz
Actinolite: Ca2(Mg,Fe)5Si8O22(OH)2
Aka Thetis' Hair Stone

Quartz with Inclusions

Rutilated Quartz
(Contains gold needles.)

Tourmalinated Quartz
(Contains black needles.)

Lodelite / lodalite / lodolite
Garden Quartz

Smoky Quartz
Smoky color results from free silicon formed by natural irradiation.

Quartz Rock Crystal
SiO2
(Small, clear.)

Girasol Quartz / Girasol Opal / Milky Quartz
Cloudiness from microscopic inclusions of fluids.

Ouro Verde Quartz (small)
From Brazil, artificially irradiated to produce yellow/green color.

Lithium Quartz

Spirit Quartz

Quartz on Sphalerite
(Cabinet specimen.)

Lemurian Quartz
Shiny Metallic Stones...

Hematite - tumbled
Also a rough section, and a part of a nodule - both cabinet specimens.
Fe2O3

Copper
Also rough cabinet specimen.

Chalcopyrite (tumbled)
(Pronounced Kalco...)
CuFeS2
Also rough cabinet specimen.

Peacock Ore - Bornite
Cu5FeS4
(Mostly bluish - rough Chalcopyrite CuFeS2 looks similar but more yellowish)

Arsenopyrite
FeAsS
Also larger cabinet specimen.

Cobaltite
CoAsS

Pyrite (Fool's Gold)
FeS2

Pyrite Cube
FeS2

Galena
PbS
block and tumbled

Mohawkite
A combo of Cu,Ag,Co,Fe,Ni,As. Found only in Mohawk Mine, MI.

Rutile
TiO2

Silicon (rough)
Si

Bismuth (manmade)
Bi

Alabandite with Rhodochrosite
Mn++S
(Cabinet specimen.)

Pyrrhotite (rough)
Fe(1-x)S, x= 0 to .17
Also cabinet specimen.

Manganite
MnO(OH)
(Sm Cabinet specimen.)

Stibnite
Sb2S3
(Cabinet specimen.)

Tetrahedrite
Cu12Sb4S13
(Cabinet specimen.)

Anglesite
PbSO4
(Cabinet specimen.)

Marcasite in Calcite
FeS2
(Cabinet specimen.)

Hausmannite
Mn++Mn+++2O4
(Cabinet specimen.)

Pyrargyrite
Ag3SbS3
(Cabinet specimen.)

Molybdenite
MoS2
Also Molybdenite in Quartz
Also Molybdenite in Pyroxene
(Cabinet specimens.)

Tennantite (Namibia)
Cu11Fe2+As4S13

Thortveitite
(Sc,Y)2Si2O7
(Cabinet specimen.)

Wavellite
Al3(PO4)2(OH,F)3*5H2O
(Cabinet specimen.)

Graphite
C
(Cabinet specimen.)

Loellingite
FeAs2
(Cabinet specimen.)

Niccolite/Nickeline
NiAs
(Also cabinet specimen.)

Cylindrite
(Cabinet specimen.)

Skutterudite
(Co, Fe, Ni) As2-3

Antimony Sb

Selenium Se
Golden/Yellow Stones...

Amber

Citrine
(Clear yellow parts.)

Honey Calcite
(Milky.)

Yellow Fluorite

Gold Quartz (palmstone)

Yellow Aventurine

Silver Topaz

Golden Calcite

Himalayan Gold Azeztulite

Sulfur Quartz

Zincite (small)

Sulfur

Orange Calcite (rough)

Orpiment
As2S3
(Cabinet specimen.)

Satyaloka Yellow Azeztulite

Wulfenite
PbMoO4
(2 sm crystal cabinet specimens.)

Rutile
TiO2
(Sm crystal cabinet specimen.)

Stibiconite in Barite
Sb+++Sb+++++2O6(OH) in BaSO4
(Cabinet specimen.)

Chalcedony
(Lg, rough cabinet specimen.)

Pyromorphite
Pb5(PO4)3Cl
(Cabinet specimen.)

"Root Beer" Sphalerite
(Sm, fragile cabinet specimen.)

Selenite
CaSO4
(Lg, rough cabinet specimen.)

Chalco-Zincite
(Cabinet specimen.)

Gypsum
(Cabinet specimen.)
Purple Stones...

Amethyst
Purple var. of quartz SiO2
color caused by iron impurities

Amethyst crystals
(Cabinet specimen.)

Chevron Amethyst

Ametrine
(Clear purple to yellowish. A mixture of Amethyst and Citrine.)

Fluorite
CaF2
(This specimen purple turning to clear. Fluorite occurs in all colors, including colorless, white, purple, blue, red, pink, orange, yellow, brown, green, gray, and black. May also be multicolored and banded.)

Fluorite crystals
(Cabinet specimen.)

Fluorite crystals
(Cabinet specimen.)

Fluorite crystals
(Cabinet specimen.)

Angeline (Small specimen.)
From Brazil, Purple Angeline contains Amethyst, Cacoxenite, Smoky Quartz - three of the main components of Super Seven.

Charoite
K(Ca;Na)2Si4O10(OH;F)*H2O
(1 small and 1 large specimen.)

Lepidolite
KLi2Al(Al,Si)3O10(F,OH)2

Stichtite
Mg6Cr2CO3(OH)16*4H2O

Purpurite
Mn3+(PO4)

Phosphosiderite
Fe3+(PO4)*2(H2O)

Sugilite (aka Luvulite)
KNa2(Fe,Mn,Al)2Li3Si12O30
(2 specimens - 1 sm, 1 lg)

Tiffany Stone / Bertrandite
(1 lg and 1 cab, also slab)

Cacoxenite in Quartz
(Iron Aluminum Phosphate)

Ussingite

Auralite

Kunzite (Pink Spodumene)
LiAl(SiO3)2 w/ traces of Manganese

Purple Jade

Purple Scapolite

Tremolite - var. Hexagonite
(Cabinet specimen.)

Lepidolite "book"
(Cabinet specimen.)

Iolite with Sunstone

Lavendar Chalcedony

Purple Strombolite / Spurrite
(Tumbled & rough.)

Kammererite

Erythrite Co3(AsO4)2*8H2O
(Cabinet specimen.)

Galenobismutite, Fluorite, Chalcopyrite
(Cabinet specimen.)
Bluish Stones...

Sodalite (med. & lg.)
Na8(Al6Si6O24)Cl2

Sapphire

Plancheite (tumbled)

Azurite
(2 specimens; has clay-colored pits. Also rough specimens shown.)

Benitoite, Neptunite, Natrolite
(Cabinet specimen.)

Aquamarine

Blue Beryl

Aquamarine Beryl on black tourmaline shorl - Erongo
(Cabinet specimen.)

Angel Wing Blue Anhydrite

Angelite (Anhydrite)
anhydrous CaSO4

Blue Fluorite (rough)

Blue Fluorite (crystals on matrix)
(Cabinet specimen.)

Blue Fluorite (tumbled)

Indicolite Quartz (rough)

Watermelon Blue Indicolite with Purple Lepidolite (small)
(Cabinet specimen.)

Chalcanthite on matrix (natural) CuSO4*5H2O
(Cabinet specimen.)

Chalcanthite (artificial) CuSO4*5H2O
(Cabinet specimen.)

Blue Apatite Ca5(PO4)3(F,OH,Cl)
(Also rough specimen shown.)

Lapis Lazuli (2 large specimens.)
Lapis Lazuli is an intergrowth of lazurite with other minerals, primarily pyrite, calcite, diopside and hauynite.

Covellite (cab, tumble)
Also rough cabinet specimen.

Covellite (large cab)

Lazulite (rough)
(Cabinet specimen.)

Tanzanite
(Small specimen, almost purple.)

Topaz (White/blue)
Al2SiO4(F,OH)2

Blue Scapolite (slab, donut)

Luzilite

Larimar (1 polished, 1 sm slab)
Larimar is blue pectolite.

Blue Calcite (rough)

Blue Calcite (tumbled)

Pietersite

Euclase
BeAlSiO4(OH)
(Small specimen.)

Blue Barite (rough)
BaSO4
(Very small specimen.)

Blue Hemimorphite
Zn4Si2O7(OH)2*H2O
Also rough cabinet specimen.

Blue Aragonite

Comparison of Hemimorphite (left) and Aragonite (right).

Kyanite
(2 specimens - 1 light, 1 dark; also rough cabinet specimens shown)

Blue-Green Kyanite
(2 pics of single specimen.)

Blue Celestite

Ruby in Kyanite

Blue Chalcedony
(5 specimens)

Blue Goldstone

Dumortierite
(2 specimens.)

Blue Aventurine
(Thumbstone.)

Blue Quartz
(Thumbstone.)

Blue Rhodusite
(Cab.)

Iolite (gemmy Cordierite)

Cavansite

Blue Coral

Tremolite (grayish) {Ca2}{Mg5}(Si8O22)(OH)2

Kieseltuff
(A form of Chert, silicified volcanic ash.)

Blue Dianite
(aka Blue Jadeite / Siberian Blue Jade)

Blue Vivianite
(Tumbled, and Sm cabinet specimen.)

Papagoite in Quartz
with Chrysocolla, Ajoite, Shattuckite
Messina (Musina), Limpopo Province, South Africa
Greenish (and Blue-Green or Gray-Green) Stones...

Malachite

Chrysocolla

Azurite with Malachite

Shattuckite

Quantum Quattro Silica

Mtorolite

Chrysoprase
(White rough spots.)

Lemon Chrysoprase
(Very pale, smooth.)

Variscite (2 specimens.)

Amazonite
(Also rough and crystal cabinet specimens.)

Zoisite
(Sparkly.)

Ruby in Zoisite / Anyolite

Fuchsite

Ruby in Fuchsite

Unakite

Bloodstone

Grossularite

Mariposite

Turkish Green Opal

Chromic Mica

Budstone (Verdite)

Chert
(Specimen is med size, gray green w/ brown/white streaks.)

Serpentine (Large specimen.)

Serpentine

Serpentine
(White spots.)

Serpentine
(Almost white, many black spots.)

Serpentine (Snake Stone)
(Very small specimen.)

Green Aventurine
(Glassy w/ minute green stripes.)
(Also rough cabinet specimen.)

Prehnite
(Sm pc w/ clay spot.)

Epidote in Prehnite (small)

Chrysolite
(Not to be confused with Chrysotile.)
(Rough cabinet specimen.)

Jade

New Jade
(Round med. specimen - half dollar sized. Milky pale green.)

Canadian Jade

Washington State Jade

Cheeta Jade

Green Goldstone

Atacamite

Emerald

Moldavite
(Small specimen; rough surface.)

Atlantisite
(Tan, green, with a purple spot. Shaped.)

Seraphinite (clinochlore)

Silver Eye
(Wedge-shaped specimen.)

Diopside CaMgSi2O6
(Also rough specimen.)

Dragonstone

Vesuvianite

Prasiolite

Green Sardonyx

Tri Color Fluorite

Chlorastrolite
(Cabinet specimen.)

Green Kyanite (rough)

Hiddenite (Green Spodumene)
(rough, large)

Adamite
(Cabinet specimen.)

Lapis Nevada (small slab)

Antigorite

Infinite
(Feels very smooth; color almost gray.)

Fluorapatite (rough)

Smithsonite (rough)
ZnCO3

Talc
Mg3Si4O10(OH)2

Heliodor (Beryl)

Ajoite
Also a rough cabinet specimen.

Vivianite
(Cabinet specimen.)

Chalcanthite
(Cabinet specimen.)

Turquoise
(Lg and sm specimens. Sm. specimen is almost blue, w/ black stripes.)

Actinolite in Talc
(Cabinet specimen.)

Green Vanadinite
(Cabinet specimen.)

Titanite / Sphene (rough)
CaTiSiO5
(Also crystal cabinet specimen.)

Eilat Stone (Israel)

Tinguaite

Dioptase CuSiO2(OH)2 (tumbled)

Epidote

Epidote
(Cabinet specimen.)

Green Heulandite (rough)

Green Heulandite
(Crystals - cabinet specimen.)

Tsavorite
(Cabinet specimen.)

Peridot (small)

Gaspeite

Rosasite
(Cabinet specimen.)

Rosasite
(Cabinet specimen.)

Annabergite (the tiny green bits)
(Cabinet specimen.)

Eclogite

Smaragdite

Kiwi Stone

Green Apophyllite crystal
(Cabinet specimen.)
Brownish Stones...

Bronzite
(Subtle sparkles.)

Brown Goldstone
(Obvious sparkles.)

Mugglestone

Aragonite

Dolomite

Chalcedony
(Milky white w/ brown streaks/"hair")

Petrified Wood
(4 specimens, various.)

Ferro-Tantalite (Madagascar)
(Fe,Mn)(Ta,Nb)2O6

Petrified Urchin

Lionskin

Tiger Iron

Tiger Iron with Hematite

Wonderstone sandstone
from Vernon Utah

Coffee Moonstone

Dravite (Brown Tourmaline)

Meteor B6-1966 fragment (small)

Faery Stone

Staurolite (lg and sm)

Nunderite
Combination of Epidote and Andalucite
From Nundel in New South Wales, Australia

Glendonite

Almandine (Almandite)
Also Almandite in Mica Schist cabinet specimen.

Brown Calcite (rough)

Scheelite
CaWO4
(Heavier and darker than the brown calcite.)

Pietersite
(Bought in Herkimer - they say it is Pietersite.)

Diaspore
(Cabinet specimen.)

Creedite Ca3Al2SO4(F,OH)10*2(H2O)
(Cabinet specimen.)

Margarite
(Cabinet specimen.)

Peristerite
(Cabinet specimen.)
Mostly White or Clear Stones...

Howlite
Ca2B5SiO9(OH)5

Amulet Stone
(aka Mt Hay Agate, Thunder Egg, Star Agate)

Cryolite
Na3AlF6

Selenite
CaSO4*2H2O

Selenite Rose

Ulexite (TV Stone)
NaCaB5O6(OH)6*5(H2O)

Spodumene
LiAl(SiO3)2

Danburite (specimen from San Luis Potosi Mexico)
CaB2(SiO4)2
Named for Danbury CT where it was discovered in 1839 by C.U. Shephard

Fluorite Octahedron
CaF2

Iceland Spar (Optical Calcite)
CaCO3
(3 small specimens.)

Magnesite nodule (Nevada)
MgCO3

Apophyllite
(K,Na)Ca4Si8O20(F,OH)*8H2O

Scolecite
CaAl2Si3O10*3H2O

Kunzite (clear Spodumene)

Petalite

Herkimer Diamond (Quartz)
(Large and small specimens.)

Gyrolite
(Cabinet specimen.)

Stibnite in Calcite
(Cabinet specimen.)

Snow Quartz

Pumice (very lightweight)

Sand Calcite

Thenardite
Na2SO4
(Cabinet specimen.)

Sylvite
KCl
(Cabinet specimen.)

Barite
BaSO4
(Two Cabinet specimens.)

Selenite Phantom
(Cabinet specimen.)

Adularia
(Cabinet specimen.)

Phosphorite
(Cabinet specimen.)

Cassiterite crystals on Muscovite
(Cabinet specimen.)

Kernite
Na2B4O6
(Cabinet specimen.)

Goshenite
Colorless Beryl
Be3Al2(SiO3)6

Cerussite
PbCO3
(sm rough and Cabinet specimen.)

Natrolite
Na2Al2Si3O10*2H2O
(Cabinet specimen.)

Pectolite
(Cabinet specimen.)

Analcime NaAlSi2O6*H2O
(Cabinet specimen.)

Witherite BaCO3 (polished)
(Cabinet specimen.)

Brucite Mg(OH)2
(Cabinet specimen.)

Beryllonite NaBePO4
(Cabinet specimen.)
Reddish, Pinkish, and Peach Stones...

Rhodochrosite (2 specimens.)

Rhodonite
(Chipped black tip.)

Mangano-Calcite
(Very smooth, almost white.)

Bustamite

Hematoid Quartz

Kona Dolomite

Strawberry Quartz
(Pale pink, black streaks.)

Sunstone
(White parts, black spot.)

Carnelian

Mookaite
(2 specimens - 1 is Olive shape, pink & tan/yellow.)

Red Calcite (rough)

Red Aventurine

Cuprite
Cu2O

Ruby

Ruby in Albite/Feldspar

Garnet
(2 small specimens. Deep red almost dk brown.)

Realgar
As4S4
(Cabinet specimen.)

Pink Spodumene / Kunzite (Brazil)
LiAlSi2O6

Pink Petalite (Namibia)
LiAlSi4O10

Dolomite

Thulite with Piemontite (Norway) (aka Pink Zoisite)
Manganese-rich variety of Zoisite

Celestobarite

Peach Aventurine

Stilbite

Red Sponge Coral

Tugtupite

Kakortokite

Cinnabite (Cinnabar in Calcite)

Cinnabar in Jasper

Pink Granite

Morganite (pink beryl - rough, tumbled)

Pink Calcite (rough)

Rose Quartz "Dragon's Egg"
(Has cut face.)

Brain Coral Yuma County AZ

Vanadinite Rough
Pb5(VO4)3Cl

Crocoite PbCrO4
(Cabinet specimen.)

Luxullianite

Pyrite / Triplite / Wagnerite (tumbled)

Rhodazez - pink Azeztulite

Small Scheelite crystals on pink Dolomite, with a Quartz crystal in the back.
(Cabinet specimen.)

Cinnabar
(Cabinet specimen.)

Datolite CaBSiO4(OH)

Pink Heulandite
(Cabinet specimen.)

Pink Smithsonite
(Cabinet specimen.)

Pyrophyllite
(Cabinet specimen.)

Zincite (rough)
(Cabinet specimen.)

Seftonite (2 pcs)
Stones exhibiting Schiller, Chatoyancy, or Iridescence...

Gold Tiger's Eye
Also rough cabinet specimen.

Red Tiger's Eye

Blue Tiger's Eye
(aka Hawk's Eye)

Cat's Eye

Ethiopian Opal

Moonstone
(5 specimens: large gray, peach palmstone, black moonstone, white, and pink.)

Rainbow Moonstone

Labradorite

Pearlspar Dolomite

Paua Shell (Abalone)
(2 small specimens.)

Marra Mamba
(Cabinet specimen.)
Non-Jasper/Agate with Distinctive Patterns...

Chrysanthemum Stone

Chinese Writing Stone

Graphic Granite

Boulder Opal
(2 specimens.)

Eudialyte

Picasso Stone

Septarian
(1 small and 1 large specimen.)

Chrysotile

Dendritic Opal

Merlinite - Dendritic Opal

Merlinite

Merlinite (Indigo Gabbro - Madagascar)

Suleiman Stone

Que Sera

Chiastolite
(Andalusite)

Blizzardstone

Azurite in K2 Jasper Granite - Pakistan

Travertine - Death Valley CA


Mahogany Obsidian
(2 specimens: tumbled and shard)

Snowflake Obsidian

Marble Onyx (China)

Petosky Stone
(Agatized coral.)

Puddingstone

Pisolite

Leopardite

Shiva Lingam
(4 specimens. Olive-shaped.)

Tree Bark Rhyolite

Zincblende

Ammonite fossil

Ammonite fossil

Cuprite and Chrysocolla (Sonora Sunset - note that "Sonora Sunrise" is proprietary.)

Banded Flint

Banded Horn Coral (lg)

Sardonyx
Onyx is white/black banded chalcedony. Sardonyx has red bands.

Frosterley Marble
Jasper...

Picture Jasper
(2 specimens, slabs.)

Owyhee Jasper
(Tiny specimen.)

Poppy Jasper

Marble Jasper

Red Jasper
(1 lg and 1 sm specimen.)

Yellow Jasper

Leopard Skin Jasper

Ocean Jasper
(2 specimens.)

Dalmatian Jasper

Voegesite (Jasper)

Rainforest Rhyolite Jasper
(3 specimens.)

Spiderweb Jasper

Ivory (Cappucino) Jasper

Golden Lace Jasper

Silverleaf Jasper
(2 specimens.)

Fancy Jasper (2 specimens.)

Brecciated Jasper

Kambaba Jasper

Bamboo Leaf Jasper

Peppermint Jasper

Sepdiolite - Purple Jasper

Bird's Eye Rhyolite

Morrisonite

Spotted Jasper

Polychrome Jasper

Polychrome Jasper
Agate...
Agate is a microcrystalline (made of microscopic crystals) variety of silica (silicon dioxide SiO2).

Blue Lace Agate

Green Striped Agate
(2 specimens.)

Blue Banded Agate (dyed)

Turitella Agate

Botswana Agate

Moss Agate

Tree Agate
(2 specimens - med rounded, sm brick-shaped.)

Sweetwater Agate

Machu Picchu Stone
(3 specimens.)

Brazilian Agate

Fire Agate

Pink Moss Agate
(Very small specimen.)

Crazylace Agate
(1 sm., 2 lg. specimens - gray, black, white stripes w/ brown areas.)

Snakeskin Agate
(4 specimens - 1 like a tooth.)

Leopardskin Agate

Youngite (3 specimens.)

Black Opal Agate (5 specimens.)

Pink Agate
(3 specimens.)

Zebra Stone

Third Eye Agate
(2 specimens.)

Black Agate

Madison Blue Agate x2

Holly Blue Agate