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Round|Natural|GIA

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2235674968

Certificate GIA 2235674968

Diamond specifications and retailer prices

From $21,580 USD
As of November 1, 2026
Save $14,276 USD (40%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $35,856 USD at Cape Diamonds · As of November 1, 2026
View at Cape Diamonds

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 2235674968. Listed at 12 retailers as of November 1, 2026, with prices from $21,580 to $35,856, a $14,276 spread on the same certified stone. Cape Diamonds lists it at $35,856. 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 angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2235674968
Dimensions8.61 × 8.65 × 5.41 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
8.61 mm8.65 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235674968
Side View
Table 56.0%Crown 35.5°Girdle: STK-STKPavilion 40.8°Culet: NoneDepth 62.7%

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: Nov 1
Current: $35,856 USD|Low: $21,580 USD|High: $35,856 USD|Avg: $27,348 USD|+2.1%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 6$21,580 USD
Retailer 8$23,608 USD
Retailer 10$25,240 USD
Retailer 2$26,163 USD
Retailer 7$26,546 USD
Retailer 12$26,658 USD
Retailer 3$27,500 USD
Retailer 11$27,500 USD
Retailer 4$28,410 USD
Retailer 5$29,508 USD
Retailer 9$29,781 USD
Cape Diamonds$35,856 USD

43 data points across 12 retailers

12 retailers$21,580 USD to $35,856 USD

B+
Cheapest Retailer
-
$21,580 USD
B+
Retailer 2
-
$23,608 USD
View
B
Retailer 3
-
$25,240 USD
View
B+
Retailer 4
-
$26,163 USD
£20,600 GBP
View
B+
Retailer 5
-
$26,546 USD
View
B
Retailer 6
-
$26,658 USD
View
B
Retailer 7
-
$27,500 USD
View
B
Retailer 8
-
$27,500 USD
View
B
Retailer 9
-
$28,410 USD
View
B
Retailer 10
-
$29,508 USD
€28,103 EUR
View
B
Retailer 11
-
$29,781 USD
View
Most Expensive
B
Cape Diamonds
cert_2235674968 · Nov 1
$35,856 USD
ZAR 579,252 ZAR
View
11 more retailers have this diamond
Prices start from $21,580 USDSave up to $14,276 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
$21,580 USD