Shop Online

New Products

AMETHYST A-Grade Oval 12x10
AMETHYST A-Grade Oval 12x10
Tumbled Amethyst chevron size L 20mm+ (Per stone)
Tumbled Amethyst chevron size L 20mm+ (Per stone)
OPAL TRIPLET Oval 10x8
OPAL TRIPLET Oval 10x8
Cabochon 25x18 MALACHITE
Cabochon 25x18 MALACHITE
Ameritool 6 inch Universal Grinder/Polisher 220v
Ameritool 6 inch Universal Grinder/Polisher 220v
Cabochon 10mm Round AMAZONITE (Peru)
Cabochon 10mm Round AMAZONITE (Peru)
Cabochon 16mm LABRADORITE
Cabochon 16mm LABRADORITE
Tumbled Gem Mix Average 20mm+ 5kg Bag
Tumbled Gem Mix Average 20mm+ 5kg Bag
Chequerboard Cabochon Gold Tigereye 8mm round
Chequerboard Cabochon Gold Tigereye 8mm round
Cabochon 25x18 Oval PHOSPHOSIDERITE (Chile)
Cabochon 25x18 Oval PHOSPHOSIDERITE (Chile)

Rough Rock for Lapidary

Rough Rock for Lapidary Ref: IntroRough
Rough rock does not photograph very well and so to indicate texture, colour etc. we have shown cut stones mostly made from our rough stock.
If the third digit of the code is '0' (i.e.??-0??) then the material will generally be supplied in tumble-polishing size (mostly less than 3cms) but may still require further reduction in size by breaking with a hammer (Wrap stone in sacking to prevent flying 'chips' and also wear protective eye glasses). If the third digit of the code is a '1' (i.e. ??-1??) then the supplied material will be larger pieces suitable for cutting with a diamond saw.
HARDNESS;........
Hardness: use a simple 'scratch’ test to determine the approximate hardness of a stone. A stone which can be marked with a pen-knife, but not with glass, must have a hardness somewhere between 5 and 51/2.
Finger nail. 21/2
Penny 3
Broken glass 5
Pen-knife 51/2
(Hardness is shown in ‘Mohs’ units: 10 is hard down to 1 soft.)


Rough Rock for Lapidary

Our stock range, of around 10,000 items, covers hobby and professional requirements for craft/workshop/therapy use. E & O E. Copyright: Manchester Minerals Ltd. April 2017