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Round|Natural|GIA

2.51ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 6531090328

Certificate GIA 6531090328

Diamond specifications and retailer prices

From €23,419 EUR
$26,164 USD
As of November 1, 2026
Save €16,754 EUR (42%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: €40,173 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6531090328. Listed at 25 retailers as of November 1, 2026, with prices from €23,419 to €40,173, a €16,754 spread on the same certified stone. MOH London lists it at €40,173. 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

2.51
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6531090328
Dimensions8.62 × 8.59 × 5.45 mm
L/W Ratio1.00
Star length55%
Lower girdle80%
Top View
8.62 mm8.59 mm2.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531090328
Side View
Table 56.0%Crown 36.5°Girdle: Sli. ThickPavilion 41°Culet: NoneDepth 63.4%

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: Nov 1
Current: €40,173 EUR|Low: €23,404 EUR|High: €40,603 EUR|Avg: €28,281 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 2€24,478 EUR
Retailer 10€24,651 EUR
Retailer 9€24,871 EUR
Retailer 3€25,723 EUR
Retailer 11€25,905 EUR
Retailer 7€25,907 EUR
Retailer 4€25,965 EUR
Retailer 5€30,043 EUR
Retailer 8€30,322 EUR
Retailer 6€35,569 EUR
MOH London€40,173 EUR

34 data points across 11 retailers

25 retailers€23,419 EUR to €40,173 EUR

B+
Cheapest Retailer
-
€23,419 EUR
$26,164 USD
B+
Retailer 2
-
€23,442 EUR
$26,190 USD
View
B+
Retailer 3
-
€23,876 EUR
$26,674 USD
View
B+
Retailer 4
-
€24,478 EUR
₹2,604,516 INR
View
B+
Retailer 5
-
€24,651 EUR
$27,540 USD
View
Final sale: no returns
B+
Retailer 6
-
€24,871 EUR
$27,786 USD
View
B+
Retailer 7
-
€25,013 EUR
$27,945 USD
View
Retailer 8
-
€25,905 EUR
A$44,525 AUD
View
Price last confirmed 29 days ago
B+
Retailer 9
-
€25,907 EUR
$28,943 USD
View
Retailer 10
-
€25,907 EUR
$28,943 USD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
€25,965 EUR
£22,841 GBP
View
B+
Retailer 12
-
€26,285 EUR
$29,366 USD
View
Retailer 13
-
€26,795 EUR
$29,935 USD
View
Price last confirmed 35 days ago
Retailer 14
-
€27,009 EUR
$30,175 USD
View
Price last confirmed 33 days ago
B
Retailer 15
-
€27,041 EUR
$30,210 USD
View
B
Retailer 16
-
€27,041 EUR
$30,210 USD
View
B
Retailer 17
-
€27,500 EUR
$30,723 USD
View
Retailer 18
-
€27,867 EUR
$31,133 USD
View
Price last confirmed 34 days ago
Retailer 19
-
€27,867 EUR
$31,133 USD
View
Price last confirmed 32 days ago
B
Retailer 20
-
€27,945 EUR
$31,220 USD
View
Retailer 21
-
€28,938 EUR
$32,330 USD
View
Price last confirmed 34 days ago
B+
Retailer 22
-
€30,043 EUR
View
B
Retailer 23
-
€30,322 EUR
$33,875 USD
View
B
Retailer 24
-
€35,569 EUR
ZAR 641,970 ZAR
View
Most Expensive
B
MOH London
2CCB9361E · Nov 1
€40,173 EUR
£35,340 GBP
View
24 more retailers have this diamond
Prices start from €23,419 EURSave up to €16,754 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+
2.51ct Round
€23,419 EUR