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Cuts & Shapes

EM x4 94

Emeralds are what we do. We specialise in and focus on one of the world’s most beautiful stones. We have many years of experience in cutting rough stones and cover the full range of emeralds from small to large and commercial to exceptional. We purchase all our emeralds via our own office in the Emerald Trade Center in Bogotá. We monitor every stage of processing, starting at the mine, including cutting and polishing, and going on up to our own treatment. We are a direct source for everyone from manufacturers to jewellers. Feel free to browse our pictures of faceted stones, pairs, cabochons and sets.  

Welcome to Lothar Haag Company, worldwide

Mathias-Michael-Haag-300pxIt all started in a small but very famous little town in Germany called Idar-Oberstein. Like no other city in the world, Idar-Oberstein covers the whole range of gemstone manufacturing. Rough stone trading, cutting and polishing, carving, drilling and setting, and jewellery manufacture too.

When my father Lothar Haag founded the company in 1957, he started as a rough stone dealer, supplying the local cutters with all kinds of gemstone from Brazil and Africa. Very soon he decided to open his own cutting shop and specialise in emeralds, which had always been his favourite stone.

Today, the company, in its second generation, is run by my brother Matthias and myself, Michael Haag.

We are both skilled gemstone cutters and worked in the cutting shop for many years. But times have changed and today we always seem to be busy rushing from one part of the world to another. In 2009 the company expanded to Los Angeles, where we opened our first branch office. The second branch office, in Hong Kong, opened 4 years ago. The third, in Beijing, capital of China, covers our activities in north China. In March 2018, so far our latest project is the grand opening of our Shenzhen shop, in the heart of the gemstone distribution centre of China – SHUI BEI, Shenzhen. Last but not least, we should mention our purchasing office in Bogota Colombia, where we obtain most of our emeralds.

Muzo Mine

Muzo Mine

Colombian emeralds are located in an area known as the ‘Emerald Belt’ of the Cordillera Oriental in the Gobernación de Boyacá and Cundinamarca district.

Coscuez Mine

Coscuez Mine

The deposits were exploited by the natives long before the arrival of Europeans in the 16th century and have been worked more or less continuously since then.

Chivor Mine

Chivor Mine

Chivor, formerly Somondoco, the oldest mine in Colombia, north-east of Bogotá. These emerald crystals are longer and cleaner than other Colombian emeralds.

Headoffice Idar-Oberstein / Germany


Germany (head office)
Lothar Haag GmbH & Co. KG
55743 Idar-Oberstein / Germany • Tiefensteiner Strasse 396
Tel.: +49 6781 9355 0 • Fax: +49 6781 9355 15 •

ColEmerald office - Hong Kong - Photo: © Oleg Znamenskiy |


Hong Kong (Asia office)
ColEmerald Ltd.
Unit B, 15/F Southgate Com. Centre • 29, Granville Raod • TST – Hong Kong
Tel: +852 2366 4855

Shenzhen office - China


Shenzhen (Store)
ColEmerald Ltd.
Shop No. C3-05-2, 3rd Floor, Block C
Wanshan Jewelry Park
Tianbei 4th Road, Luohu District, Shenzhen
+86 136 3251 7559



Los Angeles (USA office)
Lothar Haag America Inc.
606 S Olive St Ste 2100
Los Angeles, CA 90014
Tel.: +1 213 622 5788

Colemerald - Bogotá Office

Emerald Trade Center – Bogotá

Bogotá, the capital city of Colombia, is the main trading place for Colombian emeralds. At an elevation of close to…

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Our cutting shop

Processing the emerald from a raw stone to a finished cut stone calls for a considerable amount of experience, patience…

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Lothar Haag – ColEmerald new website

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Rough stone purchase

Strictly speaking we have come to specialise in Colombian emeralds, as we've been going to Colombia to buy stones for…

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