Round|Natural|GIA

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2544271085

Certificate GIA 2544271085

Diamond specifications and retailer prices

From $22,821 USD
As of October 31, 2026
Save $16,428 USD (42%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $39,249 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2544271085. Listed at 17 retailers as of October 31, 2026, with prices from $22,821 to $39,249, a $16,428 spread on the same certified stone. MOH London lists it at $39,249. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2544271085
Dimensions8.59 × 8.65 × 5.40 mm
L/W Ratio1.01
Top View
8.59 mm8.65 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2544271085
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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 31
Current: $39,249 USD|Low: $16,514 USD|High: $39,723 USD|Avg: $27,019 USD|-0.1%
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
November 1, 2026
Retailer 3$21,740 USD
Retailer 6$22,821 USD
Retailer 5$24,084 USD
Retailer 7$24,470 USD
Retailer 14$25,132 USD
Retailer 9$25,143 USD
Retailer 4$25,729 USD
Retailer 13$26,388 USD
Retailer 11$27,226 USD
Retailer 2$28,119 USD
Retailer 12$28,273 USD
Retailer 8$30,358 USD
Retailer 10$34,751 USD
Retailer 15$35,603 USD
MOH London$39,249 USD

32 data points across 15 retailers

17 retailers$22,821 USD to $39,249 USD

Retailer 1
-
$21,740 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
$22,821 USD
View
B+
Retailer 3
-
$22,881 USD
View
B+
Retailer 4
-
$24,084 USD
View
Final sale: no returns
B+
Retailer 5
-
$24,470 USD
View
B
Retailer 6
-
$25,132 USD
View
B+
Retailer 7
-
$25,143 USD
£19,797 GBP
View
B
Retailer 8
-
$25,729 USD
View
B
Retailer 9
-
$26,388 USD
View
B
Retailer 10
-
$26,863 USD
View
B
Retailer 11
-
$27,226 USD
View
B+
Retailer 12
-
$28,119 USD
£22,141 GBP
View
B
Retailer 13
-
$28,273 USD
View
B
Retailer 14
-
$30,358 USD
€28,912 EUR
View
B
Retailer 15
-
$34,751 USD
ZAR 561,411 ZAR
View
B
Retailer 16
-
$35,603 USD
View
Most Expensive
B
MOH London
374279A59 · Nov 1
$39,249 USD
£30,905 GBP
View
16 more retailers have this diamond
Prices start from $22,821 USDSave up to $16,428 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.

B+
2.51ct Round
$22,821 USD