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Round|Natural|GIA

4.02ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5231017332

Certificate GIA 5231017332

Diamond specifications and retailer prices

From €37,754 EUR
As of November 1, 2026
Save €29,577 EUR (44%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €67,331 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 4.02ct natural round diamond

This 4.02ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231017332. Listed at 4 retailers as of November 1, 2026, with prices from €37,754 to €67,331, a €29,577 spread on the same certified stone. MOH London lists it at €67,331. 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

4.02
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5231017332
Dimensions10.15 × 10.09 × 6.38 mm
L/W Ratio1.01
Top View
10.15 mm10.09 mm4.02 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231017332
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €67,331 EUR|Low: €37,754 EUR|High: €68,325 EUR|Avg: €50,744 EUR|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4€37,754 EUR
Retailer 2€42,826 EUR
Retailer 3€52,110 EUR
MOH London€67,331 EUR

38 data points across 4 retailers

4 retailers€37,754 EUR to €67,331 EUR

B+
Cheapest Retailer
-
€37,754 EUR
B
Retailer 2
-
€42,826 EUR
View
B
Retailer 3
-
€52,110 EUR
View
Most Expensive
B
MOH London
17BF91E90 · Nov 4
€67,331 EUR
£59,506 GBP
View
3 more retailers have this diamond
Prices start from €37,754 EURSave up to €29,577 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.

B+
4.02ct Round
€37,754 EUR