Course -Vanguard

Another successful Diamond & Diamond Grading course, congratulations to Diego and John, who both passed with excellent marks!

Quartz and not Diamonds

A team of mining experts has found the stones discovered in KwaHlathi, near Ladysmith in KwaZulu-Natal are not diamonds but quartz-crystals. The tests conducted conclusively revealed that the stones discovered in the area are not diamonds as some had hoped. The value of the quartz crystals was yet to be established with their value being […]

Famous Diamonds – The Star of Africa

In March of 1869, a Griqua shepherd, working on the Zandfontein farm in South Africa, picked up a pebble which caught his eye. He tried to barter the stone, first for a place to sleep, then for breakfast, but everyone turned him down. Click here to read full article. Famous Diamonds – The Star of Africa

Alrosa unveils a new diamond tracking system

Alrosa has unveiled a new diamond tracking system that uses nanotechnology to engrave gems, potentially allowing them to be traced from the mine all the way to the consumer. Click here to read full article. https://www.jckonline.com/editorial-article/alrosa-diamond-tracking-system/

Can alcohol based (70%) sanitisers damage your gems and jewellery?

Words of caution and a suggestion- clean or have your jewellery cleaned more often.Jewellery made from metals: Alcohol-based sanitiser does not cause immediate damage, but the build-up of residue could cause metals to tarnish and wear over time. Click here to read full article. Blog – Can Alcohol sanitiser damage jewellery

Third largest gem quality diamond in the world found in Botswana

On the 1 June 2021, the rough diamond weighing 1098.30 ct. was recovered by Debswana Diamond Company from the south kimberlite pipe at Jwaneng mine. It is the largest gem quality diamond found by the company since its inception in 1967. On the 16 June 2021, the gem was presented to The President of Botswana […]

Ruby-the birthstone of July

Red – the colour of love, passion, and power! The name is derived from the Latin word ruber meaning red. Ruby is the birthstone for July and the anniversary stone for 15th and 40th year of marriage. Fine rubies are the most expensive of all gemstones (except for very rare diamonds). It has got all […]

Argyle mine – iconic pink, red and blue diamonds

The Argyle Diamond Mine is owned by Rio Tinto and is located in the East Kimberley region in north of Western Australia. Argyle was, at times the largest diamond producer in the world by volume (14 million carats in 2018). At its peak in 1994, Argyle produced 42.8 million carats of rough diamonds. Since opening […]

Alexandrite-the birthstone for month of June

This rare gemstone is named after the Russian Tsar Alexander 2nd (1818 – 1881). The most sensational feature of alexandrite is its ability to change colour – green or bluish green in daylight, turning to a soft shade of red, purplish-red or raspberry red in artificial light. Click here to read full article, Alexandrite – […]

Petra Blue – a magnificent rough blue diamond

Petra Mining announces the sale of a 39.34 carat type 11b, blue diamond. This diamond was recovered in the Cullinan mine in Gauteng, South Africa in April 2021. The Cullinan mine is renowned for producing large blue diamonds. The gem will be sold on auction in July and viewings will be held in Antwerp, Dubai, […]