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Tumbled Gem Mix Average 15-20mm 5kg Bag
Tumbled Gem Mix Average 15-20mm 5kg Bag
LARIMAR Cabochon 6mm Round AA
LARIMAR Cabochon 6mm Round AA
DROP Faceted 10x7 top drill LABRADORITE AA
DROP Faceted 10x7 top drill LABRADORITE AA
Ameritool 6 inch Universal Grinder/Polisher 220v
Ameritool 6 inch Universal Grinder/Polisher 220v
Pendant T/P Side Drill LAPIS LAZULI
Pendant T/P Side Drill LAPIS LAZULI
Opalite glass Angel carving 75mm
Opalite glass Angel carving 75mm
LAPIS Oval 40x30
LAPIS Oval 40x30
OPAL WHITE 40.0 x 30.0 Oval Cabochon 33.0cts Multi
OPAL WHITE 40.0 x 30.0 Oval Cabochon 33.0cts Multi
PERIDOT Rd 5.5mm
PERIDOT Rd 5.5mm
Hand carved Fossil Petrified Wood with two Giraffes 139mm
Hand carved Fossil Petrified Wood with two Giraffes 139mm

Rough rock for tumble polishing

Rough Rock for Lapidary Ref: IntroRough2
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 but may still require further reduction in size by breaking with a lump 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 generally 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 nearly 10,000 items covers hobby and professional requirements for craft/workshop/therapy use. E & O E. Copyright: Manchester Minerals Ltd. September 2016