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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 $16,143 SGD
£9,943 GBP
As of October 30, 2026
Save $7,171 SGD (31%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $23,314 SGD 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 $16,143 to $23,314, a $7,171 spread on the same certified stone. NZ Jewellers lists it at $23,314. 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
Colour
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

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 30
Current: $23,314 SGD|Low: $16,089 SGD|High: $24,315 SGD|Avg: $18,418 SGD|-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$16,143 SGD
Retailer 8$16,470 SGD
Retailer 3$16,511 SGD
Retailer 7$16,650 SGD
Retailer 9$16,701 SGD
Retailer 6$16,728 SGD
Retailer 11$16,785 SGD
Retailer 12$17,495 SGD
Retailer 4$18,122 SGD
Retailer 10$21,684 SGD
Retailer 5$21,964 SGD
NZ Jewellers$23,314 SGD

29 data points across 12 retailers

6 retailers$16,143 SGD to $23,314 SGD

A
Cheapest Retailer
-
$16,143 SGD
£9,943 GBP
A
Retailer 2
-
$16,470 SGD
$12,883 USD
View
A
Retailer 3
-
$16,650 SGD
$13,024 USD
View
A
Retailer 4
-
$16,728 SGD
$13,085 USD
View
A
Retailer 5
-
$21,964 SGD
£13,528 GBP
View
Most Expensive
A
NZ Jewellers
1b3611f2-f6e1-4370-a6bf-9ffa9a53cd55 · Oct 30
$23,314 SGD
$18,237 USD
View
5 more retailers have this diamond
Prices start from $16,143 SGDSave up to $7,171 SGD

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
$16,143 SGD