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Categories
Categories
-
Gemstones ABC
-
A
- Strawberry Quartz B
- Actinolite quartz
- Agate Group
- Ajoite (in Quartz)
- Alexandrite
- Amazonite
- Amber
- Amethyst
- Ametrine
- Ammolite
- Andalusite
- Andean Opal
- Angelite
- Anyolite
- Apache Tear
- Apatite
- Apophylite
- Aquamarine
- Aragonite
- Astrophylite
- Atlantisite
- Auralite 23
- Aventurine
- Aventurine-Feldspar
- Azurite
- Azurmalachite
- B
-
C
- D - F
-
G-H-I
- Gabbro
- Galena
- Yellow Aragonite
- Calcite Orange
- Yellow Fluorite
- Gypsum Group
- Jet
- "Golden Healer"
- Goldsheen Obsidian
- Golden Topaz
- Garnet Group
- Green Fluorite
- Green Calcite
- Green Jade
- Heliodor
- Green Quartz
- Green Kyanite
- Green Tourmaline
- Grossular
- Bloodstone / Heliotrope
- Hematite
- Hematoid Quartz
- Hemimorphite
- Herkimer Diamond
- Hiddenite
- Howlite
- Hypersthene
- Iolite
- H - I
- J - K
- L
- M
- N - O
-
P - Q
- Purple Fluorite
- Pearl & Mother of Pearl
- Peridot
- Peach Moonstone
- Petalite
- Pietersite
- Praseolite
- Prehnite
- Pyrite
- Pyroop
- Pyroxene Group
- Quantum Quattro
- Rainbow Fluorite
- Rainbow Moonstone
- Rainbow Obsidian
- Rhodochrosite
- Rhodonite
- Rhyolite
- Ruby
- Ruby in Zoisite
- Red Agate
- Red Garnet
- Red Jasper
- Smoky Quartz
- Rose Quartz
- Rubellite
- Rutilated Quartz
- R
-
S
- Sapphire
- Schörl
- Foam Coral
- Selenite
- Septarian
- Seraphinite
- Serpentine (New Jade)
- Shungite
- Sphalerite
- Emerald
- Smithsonite
- Snow quartz
- Snowflake Obsidian
- Sodalite
- Spectrolite
- Spinel
- Spodumene
- Spodumene, White
- Stibnite
- Stichtite
- Staurolite Fairy Cross
- Star Rose Quartz
- Strawberry Quartz
- Stromatolite
- Sugilite
- Super 7
- Shell
- T - U
-
V - Z
- Hawk's eye
- Vanadinite
- Variscite
- Feldspar Group
- Verdelite, green Tourmaline
- Petrified Wood
- Petrified Coral (Petoskey Stone)
- Vesuvianite
- Fire Opal
- Watermelon Tourmaline
- Wavellite
- White Quartz
- White Selenite
- White spodumene
- Desert Rose
- Starfish
- Zincite
- Zircon
- Zoisite Group
- Aventurine-Feldspar
- Black tourmaline
- Sulphur
- Other Gemstones
-
A
- Gem Colors
-
Jewelry
- GemJudith Jewelry
- Bracelets
- Pendants
- Necklaces
- Earrings
-
Rings
-
Ringsizes
- 3.5 / G
- 4 / H
- 4.5 / J
- 5 / J 1/2
- 5.5 / L
- 5 ¾ / L ½
- 6 / M
- 6.5 / N
- 7 / O
- 7.5 / O ½
- 7.5 / P
- 8 / Q
- 8.5 / Q-Q1/2
- 9 / R 1/2 - S 1/2
- 9 ¼ / S ½
- 9.5 / S 1/2 - T
- 10 / T½
- 10-10.5 / T 1/2 - V
- 10.5 / V
- 11 / V 1/2 - W
- 11 / W
- 12
- 12 / Y
- 12.5 - 13 / Y 1/2 - Z+1
- 13.5 / Z+1 - Z+2
- 13 3/4 - 14 / Z+21/2 - Z+3
- one size fits all
- Gemstone Rings
- Precious Stones in Brass Rings
- Gemstone Silver Rings
-
Ringsizes
- Silver
- Jewelery Design
- Clearance Jewelry
- Jewelry on Color
Intrusive igneous rocks
Intrusive igneous rocks crystallize under the Earth's surface. Large crystals can form because of the slow cooling that takes place there. Examples of intrusive igneous rocks are gabbro, granite, peridotite (including olivine, quartz, spinel, etc.)
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