The authenticity of the stones and the origin of our jewellery are confirmed by official documents. The current Diamond Sky certificates are collected here.
Official Preciosa partner
Diamond Sky takes part in the Ingredient Branding Partner programme of the Czech manufacturer Preciosa. This status confirms that our jewellery uses original crystals from the Preciosa premium line, and gives us the right to mark our pieces with the «Crystals by Preciosa» sign.
Only official partners of the programme may use this sign. Our certificate is confirmed every year and has been renewed without a break since 2021.
GS1 barcodes
All our jewellery carries its own barcodes from the international GS1 system, the same one used by shops and marketplaces all over the world.
The codes are registered directly for our goods rather than taken from suppliers. Every model and every size gets a separate unique number that identifies the piece exactly, from the shop till to the product page on a marketplace.
Gold, silver and Swarovski crystals
Every item in 585 gold and 925 silver is checked by the assay supervision authority of the Republic of Latvia and receives a state hallmark. Jewellery with precious and semi-precious stones comes with separate documents confirming the properties of the stones.
We buy Swarovski crystals from official wholesalers. Since the manufacturer no longer issues separate crystal certificates to partners, their origin is confirmed by our purchase documents.