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Tumbled Gem Mix Average 20mm+ 5kg Bag
Tumbled Gem Mix Average 20mm+ 5kg Bag
Larimar Cabochon 10mm round.
Larimar Cabochon 10mm round.
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
DIAMOND marquise 4x2mm 0.07cts
DIAMOND marquise 4x2mm 0.07cts
OPAL TRIPLET Oval 10x8
OPAL TRIPLET Oval 10x8
DROP 12x8x5 top drill MOONSTONE A+
DROP 12x8x5 top drill MOONSTONE A+
Lapis Lazuli Freeform Paperweight average 110gms 50mm x 35mm
Lapis Lazuli Freeform Paperweight average 110gms 50mm x 35mm
Hand carved Rock Crystal Quartz 80mm Skull
Hand carved Rock Crystal Quartz 80mm Skull

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. July 2016