remained in the hands of the Israelite money-lenders, till Louis XIV. purchased it for 600,000 francs. It then became one of the crown-jewels of France; but its vicissitudes were not over. In 1791, when the National Assembly appointed a commission of jewellers to examine the crown-jewels, the Sancy Diamond was valued at 1,000,000 livres. At the restoration of Louis XVIII., it was nowhere to be found, and nothing positive has been heard of it since. But as so well-known and large a diamond could not readily be secretly disposed of without attracting attention in some quarter, it is shrewdly suspected that a jewel sold in 1830, by the Prince of Peace, for 500,000 francs, to one of the wealthiest of the Russian nobility, was the missing Sancy Diamond. The operation of diamond-cutting is exceedingly simple, and is without doubt performed by the cutters of the Koh-i-noor at the present time in almost precisely the same manner as invented by Berghen. The stone is held in the proper position by being embedded, all but the salient angle to be cut or polished, in a solder of tin and lead. It is then applied to a rapidly-revolving horizontal iron wheel, constantly supplied with diamond-dust, and moistened with olive-oil. The anxious care and caution required in this operation render it a very tedious one: the cutting of the Koh-i-noor will last many months, and be attended with an immense expense. A still more tedious operation, however, is sometimes performed by diamond-cutters, when it is found necessary to cut a stone into two parts; it is termed sawing, and is thus managed:--The stone to be sawn is scratched across in the desired direction by a very keen splinter of diamond, technically termed a _sharp_. An exceedingly fine iron wire, with a small portion of sweet-oil and diamond-dust, is then laid upon this guiding scratch; and the workman draws the wire backwards and forwards, as we may see blocks of stone sawn on a larger scale in the yard of the statuary. Still greater care and attention are required in this operation than in diamond-cutting: seven months have been occupied in sawing a good-sized stone. Sometimes the diamond is cut by two being cemented each upon a separate handle, and rubbed together over a box, which catches the precious dust as it falls; but the stones thus cut are disfigured by scratches, and must subsequently be polished upon the wheel.