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Round|Natural|GIA

2.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2566649853

Certificate GIA 2566649853

Diamond specifications and retailer prices

From €19,489 EUR
HK$170,100 HKD
As of November 1, 2026
Save €16,557 EUR (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €36,046 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566649853. Listed at 19 retailers as of November 1, 2026, with prices from €19,489 to €36,046, a €16,557 spread on the same certified stone. MOH London lists it at €36,046. 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
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566649853
Dimensions8.65 × 8.69 × 5.36 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
8.65 mm8.69 mm2.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2566649853
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

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 1
Current: €36,046 EUR|Low: €19,454 EUR|High: €36,239 EUR|Avg: €25,286 EUR|-0.5%
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
November 1, 2026
Retailer 4€19,489 EUR
Retailer 8€19,693 EUR
Retailer 12€19,952 EUR
Retailer 3€20,730 EUR
Retailer 5€21,013 EUR
Retailer 11€21,876 EUR
Retailer 16€22,467 EUR
Retailer 17€23,080 EUR
Retailer 14€23,093 EUR
Retailer 6€24,042 EUR
Retailer 18€24,235 EUR
Retailer 19€25,003 EUR
Retailer 13€25,457 EUR
Retailer 7€25,966 EUR
Retailer 10€26,236 EUR
Retailer 2€27,880 EUR
Retailer 15€31,915 EUR
Retailer 9€32,231 EUR
MOH London€36,046 EUR

16 data points across 19 retailers

19 retailers€19,489 EUR to €36,046 EUR

A
Cheapest Retailer
-
€19,489 EUR
HK$170,100 HKD
Retailer 2
-
€19,693 EUR
₹2,095,301 INR
View
Price last confirmed 7 days ago
A
Retailer 3
-
€19,952 EUR
$22,290 USD
View
A
Retailer 4
-
€20,730 EUR
$23,160 USD
View
A
Retailer 5
-
€21,013 EUR
$23,476 USD
View
Retailer 6
-
€22,341 EUR
$24,960 USD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
€22,467 EUR
$25,100 USD
View
B+
Retailer 8
-
€23,080 EUR
$25,785 USD
View
B+
Retailer 9
-
€23,093 EUR
£20,315 GBP
View
B+
Retailer 10
-
€24,042 EUR
$26,860 USD
View
B+
Retailer 11
-
€24,235 EUR
$27,075 USD
View
B+
Retailer 12
-
€25,003 EUR
$27,934 USD
View
B+
Retailer 13
-
€25,457 EUR
£22,394 GBP
View
B+
Retailer 14
-
€25,966 EUR
$29,009 USD
View
Retailer 15
-
€26,236 EUR
$29,311 USD
View
Price last confirmed 8 days ago
B
Retailer 16
-
€27,880 EUR
View
B
Retailer 17
-
€31,915 EUR
ZAR 576,015 ZAR
View
B
Retailer 18
-
€32,231 EUR
$36,009 USD
View
Most Expensive
B
MOH London
6829E11F8 · Nov 1
€36,046 EUR
£31,709 GBP
View
18 more retailers have this diamond
Prices start from €19,489 EURSave up to €16,557 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
2.51ct Round
€19,489 EUR