OCR Text |
Show Dutch lapidahies bava diacevered a method of carbonizing common glass, rendering it opaque and capa ble of buiQK cut and polished, resembling resem-bling the Brazilian diamond so closely aa to decsivo even the well trained eye. As a matter of course the in vention being taken ud vantage of tocefraud, aud many jewelers, as well 33 individuals, are eaid to have been cheated by it. Tbe imitation is far superior in appearance to the ordinary ordi-nary paste, crystal and white sap pbire, and tbo uual methods for d is covering deception in thpse fail when applied to the carbonized glass. Tbey can dp detected, however, by pisaing a file over the suriace, the "ge.11" being thereby destroyed, but the file does not injure a cenuiue diamond. |