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Natural rhodolite garnet, octagonal step cut, filmed turning on a laboratory stand. No indications of any treatment, according to an independent laboratory.

Coloured gemstones for fine jewellery

From Hong Kong, Zaccone selects natural coloured gemstones, documents them through independent laboratories and prepares selections for jewellers and jewellery houses in Europe and Asia.

Email us See the stones

A Hong Kong house for coloured stones

Zaccone Holdings Limited is a Hong Kong company dedicated to natural coloured gemstones, loose and set in fine jewellery.

We work with the jewellery trade: jewellers, jewellery houses and their workshops, in Europe and in Asia.

From source to setting

  1. Sourcing

    We source from established dealers and specialised trade platforms. For each stone, we record where it comes from and how it reached us.

  2. Documentation

    We have our stones examined by independent gemmological laboratories. Each report states the identification, any treatment and, where it can be determined, the origin.

  3. Selection

    We assemble single stones, pairs and calibrated suites to a jeweller’s brief: species, colour, size and cut.

  4. Setting

    Pieces set with our stones are made by partner workshops in France and Italy.

Stones we work with

Sapphire, ruby, emerald, spinel, garnet, tourmaline, tanzanite and other fine coloured stones. Each stone shown here is natural and shows no indications of any treatment, according to its independent laboratory report.

Laboratory photographs. Colour rendering varies from one screen to another.

How we work

Recorded provenance
We record the origin and history of every stone we hold.
Disclosed treatments
Any treatment identified by a laboratory is disclosed in writing.
No cash
We do not accept cash. All payments are made by bank transfer.
Known counterparties
We identify our clients and suppliers before any transaction.
Secure custody
Stones are kept in secure storage and moved by licensed secure carriers.
Registration
Our application for registration as a Dealer in Precious Metals and Stones (Category A) with the Hong Kong Customs and Excise Department is in progress.

Contact

Trade enquiries

Tell us the species, colour, size and quantity you are looking for.

Email us

info@zacconeholdings.com

Office

Unit 1706, 17/F
Kinwick Centre
32 Hollywood Road
Hong Kong

Meetings by appointment.