4 000 Carat Rough Tanzanite Gem

Amazes at The Shimansky Clock Tower Showroom, Cape Town


The beauty of Tanzanite is undisputed. Discover a 4 000 carat rough Tanzanite on display at the Shimansky Diamond Experience at the V&A Waterfront’s Clock Tower precinct in Cape Town.

One of the largest rough Tanzanite stones ever discovered, this profoundly blue-violet gem has been preserved in the natural state in which it was discovered in the foothills of Mount Kilimanjaro, Tanzania. Formed 585 million years ago, Tanzanite remained undiscovered until 1967, exactly 100 years after the first diamond was discovered in South Africa and also remarkably the birth year of our CEO and Founder, Yair Shimansky.

4000 carat rough tanzanite on display at Shimansky Cape Town

1000 times rarer than diamonds

Tanzanite is 1 000 times more rare than diamonds – and is more rarely found in examples of such impressive scale as this 4 000 carat rough Tanzanite which is treasured by Shimansky and appreciated by local and international visitors alike. As testimony to its rarity, it is believed that within the next decade, no more gem-quality tanzanite will be found.

Another unique characteristic of Tanzanite is its trichroic colour, ranging from rich royal blues to vibrant shades of violet and flashes of red. Sourced direct from mine to finger and certified in accordance with the Tanzanite International Grading Standard, Shimansky assures the best quality Tanzanite in the world.

Shimansky Jewellers Founder and CEO, Yair Shimansky, says that while Tanzanite is rare, the 4 000 Carat stone on display at the Shimansky Diamond Experience is one of its most unique expressions.

“Tanzanite is uniquely African – and this stone is an iconic example of something which is only available on our continent. While we preserved this stunning stone in its natural state as a tribute to the unique geology of the birthplace of humankind, visitors to our showrooms can take home other examples of the rarest of gems from our iconic Ayanda – The Queen of Tanzanite collection as a reminder of their visit to Africa,” he says.

4000 carat rough tanzanite on display at Shimansky Cape Town

Book A Tour

We welcome you to the Shimansky Diamond Experience in the Clock Tower, V&A Waterfront, to view this unique 4 000 carat Tanzanite stone and find out more about the fascinating history of Tanzanite. Please click here to make a booking.