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Round|Natural|GIA

2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2414737837

Certificate GIA 2414737837

Diamond specifications and retailer prices

From $18,605 USD
As of October 25, 2026
Save $14,993 USD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $33,598 USD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

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 2414737837. Listed at 15 retailers as of October 25, 2026, with prices from $18,605 to $33,598, a $14,993 spread on the same certified stone. Diamond Quarter lists it at $33,598. 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 angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2414737837
Dimensions8.77 × 8.70 × 5.35 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.77 mm8.70 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2414737837
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.3%

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 25
Current: $24,481 USD|Low: $18,605 USD|High: $33,529 USD|Avg: $23,821 USD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 5$18,605 USD
Retailer 6$19,501 USD
Retailer 2$21,695 USD
Retailer 7$22,274 USD
Retailer 8$22,981 USD
Retailer 1$24,481 USD
Retailer 4$25,699 USD
Retailer 3$33,307 USD

44 data points across 8 retailers

15 retailers$18,605 USD to $33,598 USD

A
Cheapest Retailer
-
$18,605 USD
B+
Retailer 2
-
$19,501 USD
View
B+
Retailer 3
-
$21,213 USD
View
B+
Retailer 4
-
$21,695 USD
£17,083 GBP
View
B+
Retailer 5
-
$22,274 USD
View
B+
Retailer 6
-
$22,950 USD
View
B+
Retailer 7
-
$22,950 USD
View
B+
Retailer 8
-
$22,981 USD
View
B
Retailer 9
-
$23,710 USD
View
B
Retailer 10
-
$23,865 USD
View
B+
Retailer 11
-
$24,481 USD
£19,276 GBP
View
B
Retailer 12
-
$25,699 USD
€24,475 EUR
View
B
Retailer 13
-
$30,052 USD
View
B
Retailer 14
-
$33,307 USD
£26,226 GBP
View
Most Expensive
B
Diamond Quarter
2.51SI2H2437B93DN · Oct 29
$33,598 USD
£26,455 GBP
View
14 more retailers have this diamond
Prices start from $18,605 USDSave up to $14,993 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
$18,605 USD