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Round|Natural|GIA

3.40ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1242049742

Certificate GIA 1242049742

Diamond specifications and retailer prices

From €16,361 EUR
HK$142,800 HKD
As of October 30, 2026
Save €14,349 EUR (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €30,710 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 3.4ct natural round diamond

This 3.4ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1242049742. Listed at 9 retailers as of October 29, 2026, with prices from €16,361 to €30,710, a €14,349 spread on the same certified stone. MOH London lists it at €30,710. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.40
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1242049742
Dimensions9.52 × 9.58 × 5.99 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
9.52 mm9.58 mm3.40 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242049742
Side View
Table 56.0%CrownGirdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €30,710 EUR|Low: €16,361 EUR|High: €32,232 EUR|Avg: €22,430 EUR|-4.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 2€16,361 EUR
Retailer 5€18,628 EUR
Retailer 4€20,364 EUR
Retailer 6€22,410 EUR
Retailer 3€24,191 EUR
MOH London€30,710 EUR

36 data points across 6 retailers

9 retailers€16,361 EUR to €30,710 EUR

A
Cheapest Retailer
-
€16,361 EUR
HK$142,800 HKD
Retailer 2
-
€18,628 EUR
SGD 28,123 SGD
View
Price last confirmed 19 days ago
A
Retailer 3
-
€20,364 EUR
$22,751 USD
View
B+
Retailer 4
-
€22,410 EUR
A$38,518 AUD
View
Retailer 5
-
€23,152 EUR
$25,865 USD
View
Price last confirmed 16 days ago
Retailer 6
-
€23,638 EUR
$26,408 USD
View
Price last confirmed 13 days ago
B+
Retailer 7
-
€24,191 EUR
View
Retailer 8
-
€28,004 EUR
$31,286 USD
View
Price last confirmed 14 days ago
Most Expensive
B
MOH London
E84C37AC0 · Oct 29
€30,710 EUR
£27,015 GBP
View
8 more retailers have this diamond
Prices start from €16,361 EURSave up to €14,349 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.40ct Round
€16,361 EUR