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TOUCH STONE BEAD 16.90 CARATS 0355-2
- SKU
- Dimensioni (mm)
- x x mm
- Peso (cts)
- Tipo
- Bead
- Colori
-
DESCRIPTION:
GEM TYPE: TOUCHSTONE BEAD, HOLE DRILLED FOR NECKLACE.
WEIGHT: 16.90 CARATS
SIZE: 24 x 13 x 10 MM
COLOUR: BLACK
CLARITY: OPAQUE
1 PIECE
ADDITIONAL COMMENT:
A TOUCHSTONE IS A SMALL TABLET OF DARK STONE SUCH AS FIELDSTONE, SLATE OR LYDITE, USED FOR
ASSAYING PRECIOUS METAL ALLOYS. IT HAS A FINELY GRAINED SURFACE ON WHICH SOFT METALS LEAVE A
VISIBLE TRACE.
DRAWING A LINE WITH THE GOLD ON THE TOUCHSTONE WILL LEAVE A VISIBLE TRACE. THE TRACE WILL
REACT DIFFERENTLY TO SPECIFIC CONCENTRATION OF NITRIC ACID, THEREBY IDENTIFYING THE QUALITY
OF THE GOLD. THUS 18 CT PURITY IS NOT AFFECTED BUT 14 CT GOLD WILL SHOW CHEMICAL ACTIVITY.
- SKU
- Dimensioni (mm)
- x x mm
- Peso (cts)
- Tipo
- Bead
- Colori
-
DESCRIPTION:
GEM TYPE: TOUCHSTONE BEAD, HOLE DRILLED FOR NECKLACE.
WEIGHT: 16.90 CARATS
SIZE: 24 x 13 x 10 MM
COLOUR: BLACK
CLARITY: OPAQUE
1 PIECE
ADDITIONAL COMMENT:
A TOUCHSTONE IS A SMALL TABLET OF DARK STONE SUCH AS FIELDSTONE, SLATE OR LYDITE, USED FOR
ASSAYING PRECIOUS METAL ALLOYS. IT HAS A FINELY GRAINED SURFACE ON WHICH SOFT METALS LEAVE A
VISIBLE TRACE.
DRAWING A LINE WITH THE GOLD ON THE TOUCHSTONE WILL LEAVE A VISIBLE TRACE. THE TRACE WILL
REACT DIFFERENTLY TO SPECIFIC CONCENTRATION OF NITRIC ACID, THEREBY IDENTIFYING THE QUALITY
OF THE GOLD. THUS 18 CT PURITY IS NOT AFFECTED BUT 14 CT GOLD WILL SHOW CHEMICAL ACTIVITY.
Fornitore di spedizioni | Spedizione in :paese | Spedizione nel resto del mondo |
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FedEx | $12.00 / : giorni giorni | $39.00 / : giorni giorni |
:Paese
FedEx è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
FedEx è scontato a :prezzo per ordini con :quantità o più articoli
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Registered Shipping | $9.00 / : giorni giorni | $16.00 / : giorni giorni |
:Paese
Registered Shipping è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
Registered Shipping è scontato a :prezzo per ordini con :quantità o più articoli
|
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Positivo
excellent seller, everything corresponds to the photos and description
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Positivo
excellent seller, everything corresponds to the photos and description
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Positivo
Paid and shipped - no feedback left after 100 days