Cape Town Diamond Industry History

Information on the Cape Town Diamond Industry and its history.

Diamond Industry in Cape Town South Africa

It is a standing surprise to the watchful outsider how little attention is bestowed on some of our colonies.  For instance, to the Cape Colony, comprising vast, varied, and productive regions, we have till recently manifested profound ignorance and conse quent indifference.  When the Cape Colony was first incorporated with the Empire, it was pronounced " a bauble, unworthy of thanks."  Yet before the Suez Canal and the Waghorn overland route to India, the Cape, as commanding our road to India, Australia, and China, had a special import ance.  Even now it presents an alternative route which under conceivable circum stances may be of capital moment.

The high grounds above Cape Town are rich in medicinal health-giving waters.  The 5 DIAMONDS districts where these springs occur are high lying, free from malaria, and admirably adapted for the restoration of invalids.  It needs only some distinguished power to set the fashion, some emperor, prince, or reigning beauty to take the baths and drink the waters, and the tide of tourists would carry prosperity to Aliwal North, Fraserburg, Cradock, and Fort Beaufort.

South Africa, as I shall endeavour to show in detail, is the most important source of diamonds on the earth, and ranks with Australia and California as one of the three great gold-yielding regions.  But the wealth of South Africa is not only in its gold and diamonds.  The province of Natal contains more coal than Britain ever owned before a single bucket had been raised, and the beds extend over the Orange River Colony, whilst valuable iron ores exist also in large quantities.

In the year 1896 I spent nearly a month at Kimberley.  Mr. Gardner F. Williams, 6 RIVER WASHINGS General Manager of the De Beers Con solidated Mines, and the Managers of neigh bouring mines, did their utmost to assist me in my inquiries and to ply me with valuable information.  I had full access to all the workings, above and below ground, and was able to examine at leisure their stock and take extracts from their books.

Again, in the year 1905, I paid another visit to Kimberley as the guest of Mr. Gardner Williams on the occasion of the meeting of the British Association in South Africa.

RIVER WASHINGS Besides the matrix mines, where the stones are found in pipes supposed to be of volcanic origin, the alluvial deposits on the Vaal River are of considerable importance.

The terraces and gravels along the Vaal River for about 200 miles have been worked for diamonds, the deposits sometimes ex tending several miles on each side of the 7 DIAMONDS river, and varying from a few inches to 40 or 50 feet in thickness.  The diamonds are found almost everywhere through the gravel deposit.

Before describing the present mode of diamond extraction followed in the I'm portant mines, I will commence with these " River Washings," where, in their primi tive simplicity, can be seen the modes of work and the simple machinery long since discarded in the large centres of the indus try.  The drift or so-called " river washings " present a very interesting phase of diamond industry.  The work is carried on in the primitive fashion adopted in the early days of diamond discovery, every man working on his own little claim, assisted by a few natives, and employing primitive machinery (Fig.  I).  The chief centre of the Vaal River washings is about 30 miles to the north-west of Kimberley, at a place called Klipdam No.  2.  There was originally a Klipdam a few miles further, and here the miners con ALLUVIAL DEPOSITS gregated, but the exhaustion of their claims made them migrate to others not far off and reported to be richer.  Here, accordingly, they re-erected their iron houses and called it Klipdam No.  2.

It is a mistake to speak of " river wash ings."  The diamantiferous deposits are not special to the old or recent river bed, but appear to be alluvial deposits spread over a large tract of country by the agency of water, which at some period of time subsequent to the filling up of the volcanic pipes planed off projecting kopjes from the surface of the country and scattered the debris broadcast over the land to the north-west of Kimberley.  The larger dia monds and other heavy minerals would naturally seek the lowest places, correspond ing with the river bed, past and present.

The fact that no diamonds are found in the alluvial deposits near Kimberley may perhaps be explained by supposing that the first rush was sufficiently strong to carry 9 DIAMONDS the debris past without deposition, and that deposition occurred when the stream slackened speed.  At Klipdam No.  2 the diamantiferous earth is remarkably like river gravel, of a strong red colour quite different from the Kimberley blue ground and forms a layer from i to 8 feet thick, lying over a " hard pan " of amygdaloi dal trap, the melaphyre of the Kimberley mines.

When I was at Klipdam the miners had congregated at a spot called " New Rush," where some good finds of diamonds had been reported.  The gravel is dug and put into a machine resembling the gold miner's dolly, where it is rocked and stirred by rakes, with a current of water flowing over it.

Here all the fine stuff is washed away and a rough kind of concentration effected.

The residual gravel is put on a table and sorted for diamonds an operation per formed by the master.  At one of the claims where work was proceeding vigorously I FIG.  I. RIVER WASHINGS AT KLIPDAM.

FIG.  2.  PLAN OF THE KIMBERLEY DIAMOND MINES.

To face p. 10.

ALLUVIAL DEPOSITS asked the proprietor to let me be present at the sorting out, as I should like to see river diamonds.  He willingly consented, but no diamonds were to be found.  On my expressing regret, he said he had not seen a diamond for a fortnight !  I remarked that the prospect was rather a poor one, but he told me that a fortnight before he picked out one worth 300, " and that," he said, " will pay for several weeks' wages of my boys."  This is the kind of speculative gambling that goes on at the river diggings.

The miner may toil fruitlessly for months, and then come across a pocket of stones, where they have been swept by some eddy, by which he will net several thousands.

Diamonds from the " river washings " are of all kinds, as if contributed by every mine in the neighbourhood.  They are much rolled and etched, and contain a good proportion of first-class stones ; they are of very good quality, as if only the better and larger stones had survived the ordeal of DIAMONDS knocking about.  Diamonds from the drift fetch about 40 per cent more than those from Kimberley ; taking the yield of the Kimberley and De Beers mines as worth all round, large and small, 26s.  6d.  A carat, those from the drift are worth 405.

As a rule the better class of natives the Zulus, Matabeles, Basutos, and Bechu anas when well treated, are very honest and loyal to their masters.  An amusing instance of the devotion of a Zulu came to my knowledge at Klipdam.  He had been superintending a gang of natives on a small claim at the river washings.  It yielded but few stones, and the owner my informant sold the claim, handing over the plant and small staff, our friend the Zulu remaining to look after the business till the new owner took possession.  In the course of a few months the purchaser became dissatisfied with his bargain, not a single diamond having turned up since the transfer.  One night the Zulu came to his old master in a ALLUVIAL DEPOSITS mysterious manner, and laying a handful of diamonds on the table, said, " There, Baas, are your diamonds ; I was not going to let the new man have any of them !  "

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