Round|Natural|GIA

2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6532898193

Certificate GIA 6532898193

Diamond specifications and retailer prices

From $17,288 USD
As of October 29, 2026
Save $8,160 USD (32%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $25,448 USD at MOH London · As of October 29, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6532898193. Listed at 10 retailers as of October 29, 2026, with prices from $17,288 to $25,448, a $8,160 spread on the same certified stone. MOH London lists it at $25,448. 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
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6532898193
Dimensions8.66 × 8.61 × 5.41 mm
L/W Ratio1.01
Top View
8.66 mm8.61 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6532898193
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $25,448 USD|Low: $14,133 USD|High: $26,410 USD|Avg: $19,399 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3$14,133 USD
Retailer 8$17,288 USD
Retailer 7$17,411 USD
Retailer 11$17,559 USD
Retailer 10$17,856 USD
Retailer 2$19,430 USD
Retailer 9$19,570 USD
Retailer 5$19,860 USD
Retailer 6$21,427 USD
Retailer 4$24,380 USD
MOH London$25,448 USD

41 data points across 11 retailers

10 retailers$17,288 USD to $25,448 USD

A
Cheapest Retailer
-
$17,288 USD
A
Retailer 2
-
$17,411 USD
SGD 23,528 SGD
View
A
Retailer 3
-
$17,559 USD
View
A
Retailer 4
-
$17,856 USD
View
B+
Retailer 5
-
$19,430 USD
View
A
Retailer 6
-
$19,570 USD
View
B+
Retailer 7
-
$19,860 USD
£15,638 GBP
View
B+
Retailer 8
-
$21,427 USD
€20,407 EUR
View
B
Retailer 9
-
$24,380 USD
View
Most Expensive
B
MOH London
6E98FCC83 · Oct 29
$25,448 USD
£20,038 GBP
View
9 more retailers have this diamond
Prices start from $17,288 USDSave up to $8,160 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
$17,288 USD