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Elasticated 'Chip' AMBER
Elasticated 'Chip' AMBER
PERIDOT 5.0x0.0 Round Cabochon 0.65cts Olive Green
PERIDOT 5.0x0.0 Round Cabochon 0.65cts Olive Green
LARIMAR Cabochon 10mm Round AA
LARIMAR Cabochon 10mm Round AA
Elastic BRACELET long-chip tumbled Gold Tigereye
Elastic BRACELET long-chip tumbled Gold Tigereye
Fwt.PEARL 16 inch Temp Str. 5.0-5.5mm ROUND White
Fwt.PEARL 16 inch Temp Str. 5.0-5.5mm ROUND White
Cabochon 16x12 Oval LABRADORITE
Cabochon 16x12 Oval LABRADORITE
Tumbled Gem Mix Average 15-20mm 5kg Bag
Tumbled Gem Mix Average 15-20mm 5kg Bag
Jewellers Tool set in black wallet
Jewellers Tool set in black wallet
BEADS 36 inch HEMATITE TUMBLED
BEADS 36 inch HEMATITE TUMBLED

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