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Radiant|Natural|GIA

2.51ct H SI2 Radiant Natural Diamond

ID • H/SI2 • GIA 1435868522

Certificate GIA 1435868522

Diamond specifications and retailer prices

From $17,640 CAD
£9,943 GBP
As of October 30, 2026
Save $7,835 CAD (31%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $25,475 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 2.51ct natural radiant diamond

This 2.51ct natural radiant sits in the two to three carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1435868522. Listed at 6 retailers as of October 30, 2026, with prices from $17,640 to $25,475, a $7,835 spread on the same certified stone. NZ Jewellers lists it at $25,475. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.23°
Pavilion angle31.23°
OriginNatural
Grading LabGIA
CertificateGIA 1435868522
Dimensions8.69 × 6.80 × 4.54 mm
L/W Ratio1.28
Girdle conditionSlightly Thick
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
8.69 mm6.80 mm2.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1435868522
Side View
Table 67.0%Crown 47.23°Girdle: MED-STKPavilion 31.23°Culet: NoneDepth 66.8%

Caratlytics Score

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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 30
Current: $25,475 CAD|Low: $17,581 CAD|High: $26,569 CAD|Avg: $20,134 CAD|-4.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2$17,640 CAD
Retailer 8$17,996 CAD
Retailer 3$18,041 CAD
Retailer 7$18,193 CAD
Retailer 9$18,249 CAD
Retailer 6$18,278 CAD
Retailer 11$18,341 CAD
Retailer 12$19,117 CAD
Retailer 4$19,802 CAD
Retailer 10$23,694 CAD
Retailer 5$24,000 CAD
NZ Jewellers$25,475 CAD

30 data points across 12 retailers

6 retailers$17,640 CAD to $25,475 CAD

A
Cheapest Retailer
-
$17,640 CAD
£9,943 GBP
A
Retailer 2
-
$17,996 CAD
$12,883 USD
View
A
Retailer 3
-
$18,193 CAD
$13,024 USD
View
A
Retailer 4
-
$18,278 CAD
$13,085 USD
View
A
Retailer 5
-
$24,000 CAD
£13,528 GBP
View
Most Expensive
A
NZ Jewellers
1b3611f2-f6e1-4370-a6bf-9ffa9a53cd55 · Oct 30
$25,475 CAD
$18,237 USD
View
5 more retailers have this diamond
Prices start from $17,640 CADSave up to $7,835 CAD

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 Radiant
$17,640 CAD