The gemstone division
Stones with paper trails that hold.
Every gemstone we sell is graded in our own laboratory, documented to the standard we would accept ourselves, and sold with its full history stated plainly.
1,000+
Stones Certified
D–J
Diamond Colour Range
100%
Treatments Disclosed
29
Years Trading
Four commitments
The Haldor standard
Grading
Colour, clarity, cut and carat assessed under controlled light by a qualified gemologist.
Documentation
A certificate stating measurements, grade and any treatment observed travels with the stone.
Provenance
Origin stated where verifiable, and clearly marked where it is not.
Chain of custody
Sealed parcels, logged handling, witnessed weighing, vault to counter.
The inventory
Currently on the bench
Diamond
Round brilliants and step cuts, D–J colour, VS and better as standard.
Hardness 10 · Full certification
Emerald
Zambian and Colombian material, jardin disclosed, minor-oil only.
Hardness 7.5–8 · Treatment stated
Ruby
Mogok and Mozambique material, unheated preferred and priced accordingly.
Hardness 9 · Heat status declared
Beyond the big three
Sapphire, spinel, garnet, tourmaline. The tray changes faster than the website.
Collector & investment parcels
Museum-grade specimens, documented, insured and stored securely.
For jewelers
Stock with confidence
- Trade accounts with memo terms for established houses.
- Cut-to-order commissions against your client's specification.
- Certificates your counter staff can explain in one sentence.
For investors & collectors
Acquire with a record
- Allocation guidance grounded in twenty-nine years of trade data.
- Documentation packages built for insurers, estates and resale.
- Secure storage and insured delivery, arranged in-house.
How a stone is graded
From intake to certificate
01
Intake & log
Every stone is logged, weighed and photographed on arrival.
02
Grading
Colour, clarity, cut and carat assessed under controlled light.
03
Treatment check
Laboratory testing for heat, oiling or other enhancement.
04
Certification
A signed certificate travels with the stone for its entire life on our books.
Questions we hear at the bench
Asked & answered
Do your gemstones come certified?+
Yes. Every stone is graded in our laboratory and leaves with a certificate stating measurements, colour, clarity, carat weight and any treatments observed.
Can you source a specific stone?+
Yes. We maintain sourcing mandates for jewelers and investors — give us the specification and a timeline.
Do you sell to the public?+
We trade with jewelers, collectors and investors, and welcome private clients by appointment.
Are treatments disclosed?+
Always. Heat, oiling and any observed enhancement are stated on the certificate.