Certified
National Council of Jewellery Valuers
AUSTRALIA
Why It Matters
A Truly Independent Valuer
In Australia, anyone can write a "valuation" — but only a valuer registered with the National Council of Jewellery Valuers (NCJV) carries the formal training, professional indemnity and independence required by major insurers, the courts and the ATO.
NCJV Certified
Certified Practising Valuer registered with the National Council of Jewellery Valuers — Australia's peak independent valuation body.
Independent & Impartial
Not affiliated with any retailer or insurer. Our valuations are completely independent and accepted by every major Australian insurance company.
GAA / Gem-A Trained
Formal gemmological qualifications from the Gemmological Association of Australia and Gem-A (UK), with ongoing professional development.
Insured & Indemnified
Full professional indemnity insurance and bailee cover — your jewellery is fully protected from the moment it enters our care.
Valuation Services
For Every Reason You Might Need One
Diamond & Gemstone Testing
Presidium and Sherlock Holmes diamond testers, thermal and electrical conductivity testing, refractive index, specific gravity — natural vs lab-grown identification.
Included in valuation
Precious Metal Testing
Electronic gold, platinum and silver testing, acid testing on request, hallmark verification — accurate metal-content reporting.
Included in valuation
Scope
We Value All Types of Jewellery
From a single solitaire to an entire estate collection — including specialist work on Argyle pink diamonds, natural fancy colour diamonds and significant coloured stones for SMSF compliance.
What's Covered
Every Valuation Includes
We value all types of jewellery — from contemporary diamonds to inherited antiques and SMSF-grade pink diamonds. Each certificate covers the full scope below.
Testing
Diamond testers, refractometer, polariscope, UV, thermal & electrical conductivity — natural vs lab-grown verified.
Valuing
Replacement, fair-market and SMSF market values researched against current Australian retail and auction comparables.
Antiques
Victorian, Edwardian, Art Nouveau, Art Deco and Retro period authentication, hallmark research and provenance notes.
Coloured Stones
Sapphires, rubies, emeralds, opals, spinels, tourmalines and pearls — full gemmological grading with origin opinion where possible.
Natural Diamonds
4Cs grading, fluorescence, treatment detection and lab-report cross-referencing (GIA, HRD, IGI, AGS).
Metal Testing
Electronic gold, platinum and silver testing, hallmark verification and acid testing on request — accurate metal-content reporting.
Pink Diamonds (SMSF)
Argyle pink diamond grading, tender provenance, lot identification and SMSF-compliant market valuations meeting ATO requirements.
Fully Insured & Indemnified
Every item is covered by our professional indemnity and in-store insurance from the moment it arrives until it's returned to you.
Strictly Independent
We do not buy or sell the items we value for you — eliminating conflicts of interest and guaranteeing an honest, unbiased figure.
NCJV-Certified & Accepted
Issued under National Council of Jewellery Valuers standards and accepted by every major Australian insurer, the ATO and the courts.
The Process
From Bench to Certificate
01
Booking & Drop-Off
Bring your jewellery to our Woolooware Bay showroom or send insured. Each item is logged, photographed and receipted on arrival.
02
Bench Examination
Microscope inspection, gemmological testing, weight, measurement, metal verification, hallmark check and condition report — performed in front of you where possible.
03
Research & Comparables
Current Australian retail comparables, recent auction results, brand premiums and rarity factors are researched to determine accurate replacement value.
04
Certificate Issued
Signed and embossed valuation certificate with high-resolution photographs, full description, gem grading and replacement value — typically within 5–7 business days.
Argyle Pink Diamonds & SMSF Valuations
With the closure of the Argyle mine in 2020, Australian pink diamonds have become one of the most rapidly appreciating assets in the world — and a popular SMSF holding. Accurate, independent market valuations are essential for ATO compliance, insurance and estate planning.
Nathan has personally sourced and traded Argyle pink diamonds for over 30 years. Our valuations include grading lot identification (where present), Argyle Pink Diamonds tender provenance, current secondary-market comparables and full SMSF-compliant documentation.
Pricing
How Our Pricing Works
Every valuation is quoted individually. We assess each piece on the bench before confirming a fixed fee — there are no surprise charges, and you approve the quote before we proceed.
Standard Item
from $95
Single ring, pendant, earrings or chain. Gold/silver, diamond or common gemstone.
Complex / High-Value
from $150
Multi-stone pieces, antique or signed jewellery, watches, and items above $20,000 replacement value.
Argyle Pink / SMSF
from $250
Argyle pink diamonds, rare coloured stones and SMSF-compliant market valuations with full audit trail.
What Determines Your Final Quote
Item complexity
Number of stones, settings and the time required for accurate measurement and grading.
Gemstone testing required
Diamond testing, coloured stone identification, treatment detection and origin reports.
Replacement value
Higher-value pieces require deeper market research and comparable sales analysis.
Documentation depth
Standard insurance certificate vs. SMSF/ATO-compliant or estate-grade reporting.
Antique & provenance research
Period attribution, maker's marks and historical provenance verification.
Turnaround time
Standard 5–7 business days included; express service available on request.
FAQ
Frequently Asked Questions
Request a Valuation
Submit your details & documents
Upload photos of your jewellery and any prior certificates (GIA, HRD, IGI, AGS, Argyle pink diamond reports). The more we see upfront, the faster we can quote.
1Your Details
2Valuation Details
3Photos & Prior Certificates
Upload clear photos of your jewellery and any prior valuations, diamond grading reports (GIA, HRD, IGI, AGS), Argyle pink diamond certificates or tender documents — this dramatically speeds up your quote.
Your details and uploads are private and secure.
Prefer to talk first? Text Nathan on 0410 448 186 or email nathan@nathanjewellers.com.au.