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Radiant|Natural|GIA

2.51ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 6525079061

Certificate GIA 6525079061

Diamond specifications and retailer prices

From $18,839 NZD
£8,360 GBP
As of November 2, 2026
Save $12,646 NZD (40%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $31,485 NZD 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 J 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 6525079061. Listed at 7 retailers as of October 30, 2026, with prices from $18,839 to $31,485, a $12,646 spread on the same certified stone. NZ Jewellers lists it at $31,485. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.14°
Pavilion angle30.4°
OriginNatural
Grading LabGIA
CertificateGIA 6525079061
Dimensions9.45 × 6.85 × 4.33 mm
L/W Ratio1.38
Top View
9.45 mm6.85 mm2.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6525079061
Side View
Table 73.0%Crown 44.14°Girdle: MED-STKPavilion 30.4°Culet: NoneDepth 63.1%

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: Nov 2
Current: $31,485 NZD|Low: $18,682 NZD|High: $32,111 NZD|Avg: $24,896 NZD|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$18,839 NZD
Retailer 4$22,335 NZD
Retailer 6$22,500 NZD
Retailer 5$22,589 NZD
Retailer 7$22,936 NZD
Retailer 3$29,503 NZD
NZ Jewellers$31,485 NZD

42 data points across 7 retailers

7 retailers$18,839 NZD to $31,485 NZD

A
Cheapest Retailer
-
$18,839 NZD
£8,360 GBP
A
Retailer 2
-
$22,335 NZD
£9,912 GBP
View
B+
Retailer 3
-
$22,500 NZD
$12,681 USD
View
A
Retailer 4
-
$22,589 NZD
$12,731 USD
View
B+
Retailer 5
-
$22,936 NZD
$12,927 USD
View
B+
Retailer 6
-
$29,503 NZD
£13,093 GBP
View
Most Expensive
B
NZ Jewellers
dcf6cc72-ceb6-4851-b385-009087832132 · Oct 30
$31,485 NZD
$17,745 USD
View
6 more retailers have this diamond
Prices start from $18,839 NZDSave up to $12,646 NZD

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
$18,839 NZD