Diatheke Acquired by Rosy Blue in Major Diamond Industry Move
Deal News | May 19, 2025 | Legal Community Swiss

Rosy Blue, a renowned leader in the diamond manufacturing sector, has successfully acquired a majority stake in the Swiss company Diatheke, specialists in luxury watches and jewellery. The acquisition marks a significant expansion for Rosy Blue, which is headquartered in Anversa and has a robust global presence in the trade and manufacturing of diamonds. The transaction was advised by the law firm Altenburger, with Partner Manuel Moor leading the legal team. This strategic move aims to bolster Rosy Blue's position in the luxury market, particularly enhancing its offerings in the jewellery segment through Diatheke's esteemed product line.
Sectors
- Luxury Goods
- Diamond Manufacturing
- Mergers and Acquisitions
Geography
- Switzerland – Diatheke, the target company, is based in Geneva, Switzerland.
- Belgium – Rosy Blue, the acquiring company, is headquartered in Anversa, Belgium.
Industry
- Luxury Goods – The acquisition involves Diatheke, a company specializing in luxury watches and jewellery.
- Diamond Manufacturing – Rosy Blue is a diamond manufacturer and trader, engaging in polished and rough diamond markets.
- Mergers and Acquisitions – The transaction itself is a corporate acquisition handled by Altenburger, involving legal advisory.
Financials
- Not disclosed – The financial terms of the acquisition between Rosy Blue and Diatheke were not disclosed.
Participants
Name | Role | Type | Description |
---|---|---|---|
Rosy Blue | Bidding Company | Company | A globally active diamond manufacturer and trader based in Anversa, Belgium. |
Diatheke | Target Company | Company | A Swiss manufacturer specializing in luxury watches and jewellery, based in Geneva. |
Altenburger | Legal Advisor | Company | A law firm that advised Rosy Blue on the acquisition of Diatheke. |
Manuel Moor | Partner | Person | Partner at Altenburger leading the corporate/M&A team advising Rosy Blue. |
Jason Mischol | Associate | Person | Associate at Altenburger working alongside Manuel Moor on the acquisition. |