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CITRINE 15.0x12.0 Oval 8.65cts Golden Yellow
CITRINE 15.0x12.0 Oval 8.65cts Golden Yellow
LARIMAR Cabochon 6mm Round AA
LARIMAR Cabochon 6mm Round AA
Cabochon 40x30 MALACHITE
Cabochon 40x30 MALACHITE
Ameritool 4/5inch Saw (220v) with 4inch Blade & Vice
Ameritool 4/5inch Saw (220v) with 4inch Blade & Vice
Ameritool 6 inch Universal Grinder/Polisher 220v
Ameritool 6 inch Universal Grinder/Polisher 220v
Cabochon 18x13 PAUA SHELL (Natural)
Cabochon 18x13 PAUA SHELL (Natural)
Carving Heart 30mm Set of 12
Carving Heart 30mm Set of 12
CUFF LINK 10mm CHAIN Sterling Silver  (Pair)
CUFF LINK 10mm CHAIN Sterling Silver (Pair)
PERIDOT 8.0 x 6.0 Oval Cabochon 1.50cts Olive Green
PERIDOT 8.0 x 6.0 Oval Cabochon 1.50cts Olive Green
Tumbled Gem Mix Average 15-20mm 5kg Bag
Tumbled Gem Mix Average 15-20mm 5kg Bag

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