Radical transparency · Live from the catalogue

The Treatment Register

Every loose stone the house currently offers, its treatment status and its certification state — rendered live from our catalogue, so our disclosure can be checked by anyone, at any time. No gem house we know of publishes this. We think they all should.

Live as of 15 August 2026 · register updates automatically as laboratory results are confirmed

84Stones listed
14Unheated
6Heated · disclosed
64Under lab verification

How to read this register. Treatment is the single largest driver of a coloured stone’s value. Unheated means no thermal enhancement — the rarest state. Heated is the trade’s standard, permanent and legitimate when disclosed — and we disclose it. Under laboratory verification means a natural stone whose treatment status is being confirmed by independent testing right now; we make no claim either way until the laboratory speaks, and results are disclosed in writing before sale. Every stone links to its live Digital Gemstone Passport.

Stone IDStoneSpeciesOriginCaratTreatmentCertification
47040 Royal Blue Ceylon Sapphire 3.24ct Cushion — Unheated Sapphire Ceylon (Sri Lanka) 3.24 ct Unheated Available on request
47013-5R Royal Blue Ceylon Sapphire 3.60ct Round — Unheated Sapphire Ceylon (Sri Lanka) 3.6 ct Unheated Available on request
47018 Royal Blue Ceylon Sapphire 3.43ct Cushion Sapphire Ceylon (Sri Lanka) 3.43 ct Heated · disclosed Available on request
24007 Royal Blue Ceylon Sapphire 3.63ct Cushion Sapphire Ceylon (Sri Lanka) 3.63 ct Heated · disclosed Available on request
16024 Cornflower Blue Ceylon Sapphire 7.57ct Cushion Sapphire Ceylon (Sri Lanka) 7.57 ct Under lab verification Available on request
22327 Royal Blue Ceylon Sapphire 2.25ct Cushion Sapphire Ceylon (Sri Lanka) 2.25 ct Heated · disclosed Available on request
1398 Cornflower Blue Ceylon Sapphire 5.71ct Oval Sapphire Ceylon (Sri Lanka) 5.71 ct Under lab verification Available on request
47005-15R Royal Blue Ceylon Sapphire 2.93ct Cushion — Unheated Sapphire Ceylon (Sri Lanka) 2.93 ct Unheated Available on request
47005-14R Royal Blue Ceylon Sapphire 3.94ct Cushion — Unheated Sapphire Ceylon (Sri Lanka) 3.94 ct Unheated Available on request
1688 Golden Yellow Australian Sapphire 6.23ct Cushion Sapphire Australia 6.23 ct Heated · disclosed Available on request
12001 Cornflower Blue Ceylon Sapphire 2.44ct Oval Sapphire Ceylon (Sri Lanka) 2.44 ct Under lab verification Available on request
12400 Cornflower Blue Ceylon Sapphire 6.00ct Oval Sapphire Ceylon (Sri Lanka) 6.0 ct Under lab verification Available on request
12402 Violet Blue Ceylon Sapphire 2.39ct Oval Sapphire Ceylon (Sri Lanka) 2.39 ct Under lab verification Available on request
10026 Cornflower Blue Ceylon Sapphire 4.32ct Cushion Sapphire Ceylon (Sri Lanka) 4.32 ct Under lab verification Available on request
47011 Royal Blue Ceylon Sapphire 3.24ct Oval — Unheated Sapphire Ceylon (Sri Lanka) 3.24 ct Unheated Available on request
80289 Yellow-Green Australian Sapphire 2.00ct Oval Sapphire Australia 2.0 ct Under lab verification Available on request
11318 Deep Blue Australian Sapphire 4.04ct Emerald Cut Sapphire Australia 4.04 ct Heated · disclosed Available on request
80287 Blue-Yellow Parti Australian Sapphire 2.41ct Oval Sapphire Australia 2.41 ct Under lab verification Available on request
47013 Royal Blue Ceylon Sapphire 3.44ct Oval Sapphire Ceylon (Sri Lanka) 3.44 ct Under lab verification Available on request
80277 Yellow-Blue Parti Australian Sapphire 1.52ct Oval Sapphire Australia 1.52 ct Under lab verification Available on request
80279 Green-Yellow Australian Sapphire 2.44ct Oval Sapphire Australia 2.44 ct Under lab verification Available on request
80234 Blue-Yellow Parti Australian Sapphire 1.44ct Oval Sapphire Australia 1.44 ct Under lab verification Available on request
80215 Green-Yellow Australian Sapphire 1.28ct Oval Sapphire Australia 1.28 ct Under lab verification Available on request
80278 Blue-Green Australian Sapphire 2.04ct Oval Sapphire Australia 2.04 ct Under lab verification Available on request
80205 Matched Trio — Blue-Green African Sapphires 3.82ct Total — — 3.82 ct Under lab verification Available on request
80197 Green Australian Sapphire 2.31ct Oval Sapphire Australia 2.31 ct Under lab verification Available on request
80211 Green-Yellow Parti Australian Sapphire 2.19ct Cushion Sapphire Australia 2.19 ct Under lab verification Available on request
80219 Green Australian Sapphire 2.30ct Cushion Sapphire Australia 2.3 ct Under lab verification Available on request
80187 Matched Trio — Australian Sapphires 2.65ct Total, Emerald Cuts Emerald Australia 2.65 ct Under lab verification Available on request
80196 Green Australian Sapphire 1.52ct Oval — Natural Sapphire Australia 1.52 ct Unheated Available on request
80202 Teal Australian Sapphire 1.96ct Cushion Sapphire Australia 1.96 ct Under lab verification Available on request
80181 Green-Yellow Parti Australian Sapphire 1.91ct Oval Sapphire Australia 1.91 ct Under lab verification Available on request
12334 Parti Yellow-Blue Australian Sapphire 1.54ct Sapphire Australia 1.54 ct Under lab verification Available on request
12330 Blue Australian Sapphire 2.00ct Cushion Sapphire Australia 2.0 ct Heated · disclosed Available on request
RUBY-B0797 Unheated Natural Ruby 1.16ct Octagon — IGLC Certified Ruby — 1.16 ct Unheated Certified
12338 Matched Pair — Teal Green Australian Sapphires 2.71ct Total — Australia 2.71 ct Under lab verification Available on request
12337 Matched Pair — Blue Australian Sapphires 2.17ct Total — Australia 2.17 ct Under lab verification Available on request
12336 Blue Australian Sapphire 1.58ct Oval Sapphire Australia 1.58 ct Under lab verification Available on request
12328 Blue-Green Australian Sapphire 3.20ct Oval Sapphire Australia 3.2 ct Under lab verification Available on request
12325 Teal Australian Sapphire 1.85ct Oval Sapphire Australia 1.85 ct Under lab verification Available on request
12324 Blue Australian Sapphire 1.31ct Oval Sapphire Australia 1.31 ct Under lab verification Available on request
12335 Teal Australian Sapphire 1.27ct Round Sapphire Australia 1.27 ct Under lab verification Available on request
12327 Yellowish Parti Australian Sapphire 1.47ct Sapphire Australia 1.47 ct Under lab verification Available on request
12331 Teal Australian Sapphire 2.19ct Cushion — Unheated Sapphire Australia 2.19 ct Unheated Available on request
12329 Blue Australian Sapphire 1.97ct Oval Sapphire Australia 1.97 ct Under lab verification Available on request
12322 Blue Australian Sapphire 1.25ct Round Sapphire Australia 1.25 ct Under lab verification Available on request
12326 Deep Blue Australian Sapphire 1.90ct Emerald Cut Sapphire Australia 1.9 ct Under lab verification Available on request
12323 Yellow Australian Sapphire 0.84ct Sapphire Australia 0.84 ct Under lab verification Available on request
Ministry_Ruby 1.16 Ruby Unheated (Pigeon Blood) 1.16 cts Ruby — 1.16 ct Unheated Available on request
Ministry_Emerald 16cts Emerald (Natural, Zambian) 16 cts Emerald — 16.0 ct Under lab verification Available on request
Ministry_Emerald 7.73 Emerald (Natural Zambian) 7.73 cts Emerald — 7.73 ct Under lab verification Available on request
Ministry_Emerald 10.68 Emerald (Natural Zambian) 10.68 cts Emerald — 10.68 ct Under lab verification Available on request
202655_CC Ceylon Blue Sapphire Unheated 5.6 cts Sapphire Ceylon (Sri Lanka) 5.6 ct Unheated Available on request
202655 CC2 Ceylon Blue Sapphire Unheated 4.55 cts Sapphire Ceylon (Sri Lanka) 4.55 ct Unheated Available on request
10841 Ceylon Blue Sapphire 5.43 cts Sapphire Ceylon (Sri Lanka) 5.43 ct Under lab verification Available on request
47010 Ceylon Blue Sapphire 4.95 cts Sapphire Ceylon (Sri Lanka) 4.95 ct Under lab verification Available on request
31007 Ceylon Blue Sapphire 3.63 cts Sapphire Ceylon (Sri Lanka) 3.63 ct Under lab verification Available on request
80207 Australian Green Sapphire, 1.23 cts Sapphire Australia 1.23 ct Under lab verification Available on request
Australian Opal 1.49cts Solid Australian Solid Opal 1.49 cts Opal Australia 1.49 ct Under lab verification Available on request
80205 Australian Sapphires 3 Pcs Set 3.82 cts — Australia 3.82 ct Under lab verification Available on request
80274 Australian Sapphire, 1.44 cts Oval Cut Sapphire Australia 1.44 ct Under lab verification Available on request
80247 Australian Sapphire Pair 2.7 cts Sapphire Australia 2.7 ct Under lab verification Available on request
10910 Australian Sapphire 6.24 cts Sapphire Australia 6.24 ct Under lab verification Available on request
80184 Australian Sapphire 2.94 cts Oval Pair Sapphire Australia 2.94 ct Under lab verification Available on request
12901 Australian Sapphire 2.17 cts Sapphire Australia 2.17 ct Under lab verification Available on request
12225 Australian Sapphire 2.04 cts OV Sapphire Australia 2.04 ct Under lab verification Available on request
11085 Australian Sapphire 2.02 cts Sapphire Australia 2.02 ct Under lab verification Available on request
80182 Australian Sapphire 2.01 cts Sapphire Australia 2.01 ct Under lab verification Available on request
80209 Australian Sapphire 1.97 cts Sapphire Australia 1.97 ct Under lab verification Available on request
80188 Australian Sapphire 1.89 cts OC Sapphire Australia 1.89 ct Under lab verification Available on request
80199 Australian Sapphire 1.75 cts CC Sapphire Australia 1.75 ct Unheated Available on request
80206 Australian Sapphire 1.71 cts OC Sapphire Australia 1.71 ct Under lab verification Available on request
80220 Australian Sapphire 1.67 cts Sapphire Australia 1.67 ct Under lab verification Available on request
80237 Australian Sapphire 1.59 cts Sapphire Australia 1.59 ct Under lab verification Available on request
80190 Australian Sapphire 1.4 cts CC Sapphire Australia 1.4 ct Under lab verification Available on request
80221 Australian Sapphire 1.32 cts Sapphire Australia 1.32 ct Under lab verification Available on request
80204 Australian Sapphire 1.2 cts (Yellow-Orange) Sapphire Australia 1.2 ct Under lab verification Available on request
80233 Australian Sapphire 1.19 cts Sapphire Australia 1.19 ct Under lab verification Available on request
12054 Australian Blue Sapphire, 1.63 cts Sapphire Australia 1.63 ct Unheated Available on request
11979 Australian Blue Sapphire 3.74 cts Sapphire Australia 3.74 ct Under lab verification Available on request
10976 Australian Blue Sapphire 3.06 cts Sapphire Australia 3.06 ct Unheated Available on request
12149 Australian Blue Sapphire 1.63 cts OV Sapphire Australia 1.63 ct Under lab verification Available on request
Australian Opal 1.74 cts (Dbl) Australian Black Opal 1.74 cts Opal Australia 1.74 ct Under lab verification Available on request
Black Opal 1.83cts Australian Black Opal (Solid) 1.83 cts Opal Australia 1.83 ct Under lab verification Available on request

Machine-readable copy: download the register as CSV · regenerated when laboratory results are confirmed. Questions about any stone? Ask our FGAA gemmologist — or read The Certification Handbook to learn how to read a laboratory report yourself.