Julie ,
This may be of help to you,,,,,
Agate-7 Alabaster-2 Amber-2.5-2 Amethyst-7 Ammolite-3.5-1 Amazonite -6 Aventurine-7 Azurite-4 Beryl-7.5-8 Bloodstone-7 Carnelian-7 Catseye Chrysoberyl-8.5 Chalcedony-7 Charoite-6 Chrysoprase-7 Chrysocolla-4-2 Copper Penny 3.5 Coral-4-3 Fingernail-2.5
Fluorite-4-3.5 Garnet-7-7.5 Glass-6.5 Hardened Steel File-6.5 Hematite-6.5-5.5
Howlite-3.5-3 Ivory-3-2 Jadeite-7 Jasper-7 Jet-4-2.5 Knife Blade-5.5 Labradorite-6
Lapis Lazuli-6 Larimar (pectolite)-5 Malachite-4-3.5 Moldavite-5.56.5 Moonstone-6
Nephrite Jade-6.5 to 6 Obsidian-5.5-5 Onyx (calcite)-3 Onyx (quartz)-7 Opal -6.5-5.5
Pearl-4.5-2 Petrified Wood-7 Quartz-7 Rhodochrosite-4 Rhodonite-6.5-5.5 Rose Quartz-7
Sard-7 Serpentine-5.5-2 Smithsonite-5 Sodalite-6-5.5 Star Rubies-9 Star Sapphires-9
Sugilite-6.5-6 Sulpher-1 Sunstone-6 Thomsonite-5.5 to 5 Thulite-7 Tigereye-7
Tourmaline-7.5 to 6.5 Turquoise-5-6 Ulexite-2.5-2 Variscite-5-4-3
( below taken from
www.quartzpage.de/intro.html )
Macrocrystalline varieties are those that form crystals, like amethyst, or have a macroscopical crystalline structure. When people talk about "quartz", they usually think of macrocrystalline quartz.
Rock Crystal Citrine Prase Rose Quartz
Smoky Quartz Pink Quartz Ametrine Ferruginous Quartz
Amethyst Prasiolite Milky Quartz Tiger's Eye
Aventurine Cat's Eye Blue Quartz Hawk's Eye
Cryptocrystalline or microcrystalline varieties that do not show any visible crystals and have a dense structure, like agate. Cryptocrystalline varieties are sometimes grouped together under the term chalcedony.
Chalcedony Agate Carnelian Heliotrope
Flint Plasma Chrysoprase Chert
Jasper Sard Onyx
Labradorite will undercut when tumbled because (I think?) it has sodium/calcium in it's structure or something else that is soft.So be careful when you tumble it with other hard rocks.It's better to do it on it's own with a lot of soft fillers.
connrock