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Round|Natural|GIA

2.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 1555877286

Certificate GIA 1555877286

Diamond specifications and retailer prices

From $18,378 USD
₹1,750,326 INR
As of October 31, 2026
Save $14,375 USD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $32,753 USD 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555877286. Listed at 16 retailers as of October 31, 2026, with prices from $18,378 to $32,753, a $14,375 spread on the same certified stone. MOH London lists it at $32,753. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1555877286
Dimensions8.65 × 8.60 × 5.41 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural
Top View
8.65 mm8.60 mm2.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555877286
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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: Oct 31
Current: $32,753 USD|Low: $18,378 USD|High: $34,003 USD|Avg: $24,490 USD|-3.7%
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
November 1, 2026
Retailer 13$18,378 USD
Retailer 7$20,393 USD
Retailer 14$21,281 USD
Retailer 16$21,395 USD
Retailer 11$21,447 USD
Retailer 9$22,950 USD
Retailer 4$23,149 USD
Retailer 10$23,966 USD
Retailer 5$24,306 USD
Retailer 6$24,306 USD
Retailer 8$24,667 USD
Retailer 12$24,907 USD
Retailer 2$25,572 USD
Retailer 15$26,042 USD
Retailer 3$29,710 USD
MOH London$32,753 USD

20 data points across 16 retailers

16 retailers$18,378 USD to $32,753 USD

A
Cheapest Retailer
-
$18,378 USD
₹1,750,326 INR
A
Retailer 2
-
$20,393 USD
View
Final sale: no returns
A
Retailer 3
-
$21,281 USD
View
A
Retailer 4
-
$21,395 USD
View
A
Retailer 5
-
$21,447 USD
£16,887 GBP
View
Retailer 6
-
$22,950 USD
View
B+
Retailer 7
-
$23,149 USD
View
B+
Retailer 8
-
$23,966 USD
£18,871 GBP
View
B+
Retailer 9
-
$24,306 USD
View
B+
Retailer 10
-
$24,306 USD
View
B+
Retailer 11
-
$24,667 USD
€23,492 EUR
View
B+
Retailer 12
-
$24,907 USD
View
B+
Retailer 13
-
$25,572 USD
View
B+
Retailer 14
-
$26,042 USD
View
B+
Retailer 15
-
$29,710 USD
View
Most Expensive
B+
MOH London
479FC1984 · Nov 1
$32,753 USD
£25,790 GBP
View
15 more retailers have this diamond
Prices start from $18,378 USDSave up to $14,375 USD

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
$18,378 USD