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1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2427279307

Certificate GIA 2427279307

Diamond specifications and retailer prices

From €8,176 EUR
$9,100 USD
As of October 25, 2026
Save €8,859 EUR (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €17,035 EUR at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2427279307. Listed at 19 retailers as of October 25, 2026, with prices from €8,176 to €17,035, a €8,859 spread on the same certified stone. Diamond Quarter lists it at €17,035. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2427279307
Dimensions7.41 × 7.37 × 4.53 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.41 mm7.37 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2427279307
Side View
Table 58.0%Crown 32°Girdle: Slightly ThickPavilion 41.4°Culet: NoneDepth 61.2%

Caratlytics Score

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

Price History

Last verified: Oct 25
Current: €9,728 EUR|Low: €8,176 EUR|High: €14,138 EUR|Avg: €10,739 EUR|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 6€8,176 EUR
Retailer 8€8,299 EUR
Retailer 9€8,850 EUR
Retailer 1€9,728 EUR
Retailer 5€9,848 EUR
Retailer 2€10,793 EUR
Retailer 3€11,065 EUR
Retailer 7€12,984 EUR
Retailer 4€14,044 EUR

43 data points across 9 retailers

19 retailers€8,176 EUR to €17,035 EUR

B+
Cheapest Retailer
-
€8,176 EUR
$9,100 USD
B+
Retailer 2
-
€8,299 EUR
$9,237 USD
View
B+
Retailer 3
-
€8,850 EUR
$9,850 USD
View
B+
Retailer 4
-
€8,945 EUR
$9,956 USD
View
B+
Retailer 5
-
€9,690 EUR
$10,785 USD
View
B+
Retailer 6
-
€9,728 EUR
£8,525 GBP
View
B+
Retailer 7
-
€9,839 EUR
$10,951 USD
View
B+
Retailer 8
-
€9,848 EUR
A$16,864 AUD
View
B+
Retailer 9
-
€10,485 EUR
$11,670 USD
View
B+
Retailer 10
-
€10,485 EUR
$11,670 USD
View
B+
Retailer 11
-
€10,793 EUR
View
B+
Retailer 12
-
€11,065 EUR
£9,697 GBP
View
B
Retailer 13
-
€11,181 EUR
$12,445 USD
View
B
Retailer 14
-
€11,707 EUR
$13,030 USD
View
B
Retailer 15
-
€11,769 EUR
$13,099 USD
View
Retailer 16
-
€12,984 EUR
ZAR 233,452 ZAR
View
Price last confirmed 12 days ago
B
Retailer 17
-
€14,044 EUR
£12,308 GBP
View
B
Retailer 18
-
€14,908 EUR
$16,593 USD
View
Most Expensive
B
Diamond Quarter
1.51SI1E2407034AN · Oct 29
€17,035 EUR
£14,929 GBP
View
18 more retailers have this diamond
Prices start from €8,176 EURSave up to €8,859 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+
1.51ct Round
€8,176 EUR