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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 3555438928

Certificate GIA 3555438928

Diamond specifications and retailer prices

From €4,762 EUR
As of November 5, 2026
Save €4,348 EUR (48%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €9,110 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555438928. Listed at 19 retailers as of November 4, 2026, with prices from €4,762 to €9,110, a €4,348 spread on the same certified stone. MOH London lists it at €9,110. 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

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555438928
Dimensions7.30 × 7.34 × 4.58 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.30 mm7.34 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555438928
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.5%

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: Nov 5
Current: €9,110 EUR|Low: €4,698 EUR|High: €9,246 EUR|Avg: €5,971 EUR|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 12€4,698 EUR
Retailer 3€4,762 EUR
Retailer 6€4,899 EUR
Retailer 19€4,903 EUR
Retailer 4€4,964 EUR
Retailer 7€5,185 EUR
Retailer 20€5,226 EUR
Retailer 11€5,524 EUR
Retailer 5€5,534 EUR
Retailer 18€5,618 EUR
Retailer 9€5,709 EUR
Retailer 17€5,720 EUR
Retailer 13€5,849 EUR
Retailer 10€5,867 EUR
Retailer 2€6,342 EUR
Retailer 8€6,345 EUR
Retailer 14€6,593 EUR
Retailer 15€7,565 EUR
Retailer 16€8,988 EUR
MOH London€9,110 EUR

29 data points across 20 retailers

19 retailers€4,762 EUR to €9,110 EUR

A
Cheapest Retailer
-
€4,762 EUR
A
Retailer 2
-
€4,899 EUR
View
A
Retailer 3
-
€4,903 EUR
View
A
Retailer 4
-
€4,964 EUR
View
B+
Retailer 5
-
€5,185 EUR
View
Final sale: no returns
B+
Retailer 6
-
€5,226 EUR
View
B+
Retailer 7
-
€5,534 EUR
View
B+
Retailer 8
-
€5,618 EUR
View
Retailer 9
-
€5,709 EUR
View
Price last confirmed 23 days ago
B+
Retailer 10
-
€5,720 EUR
View
B+
Retailer 11
-
€5,849 EUR
View
Retailer 12
-
€5,867 EUR
View
Price last confirmed 34 days ago
Retailer 13
-
€5,984 EUR
View
Price last confirmed 30 days ago
B+
Retailer 14
-
€6,342 EUR
View
B+
Retailer 15
-
€6,345 EUR
View
B+
Retailer 16
-
€6,593 EUR
View
B
Retailer 17
-
€7,565 EUR
View
B
Retailer 18
-
€8,988 EUR
View
Most Expensive
B
MOH London
BCCCD8CA4 · Nov 4
€9,110 EUR
£8,009 GBP
View
18 more retailers have this diamond
Prices start from €4,762 EURSave up to €4,348 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
1.51ct Round
€4,762 EUR