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Radiant|Natural|GIA

1.51ct L SI1 Radiant Natural Diamond

EX • L/SI1 • GIA 5456311800

Certificate GIA 5456311800

Diamond specifications and retailer prices

From $4,456 NZD
As of November 6, 2026
Save $5,017 NZD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $9,472 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5456311800. Listed at 10 retailers as of November 5, 2026, with prices from $4,456 to $9,472, a $5,017 spread on the same certified stone. NZ Jewellers lists it at $9,472. 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

1.51
Carat
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5456311800
Dimensions7.25 × 5.96 × 4.07 mm
L/W Ratio1.22
Top View
7.25 mm5.96 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5456311800
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.3%

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 6
Current: $9,472 NZD|Low: $4,452 NZD|High: $9,472 NZD|Avg: $5,442 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 3$4,456 NZD
Retailer 6$4,531 NZD
Retailer 8$4,531 NZD
Retailer 9$4,741 NZD
Retailer 2$4,795 NZD
Retailer 7$5,228 NZD
Retailer 5$5,531 NZD
Retailer 4$5,626 NZD
NZ Jewellers$9,472 NZD

35 data points across 9 retailers

10 retailers$4,456 NZD to $9,472 NZD

B+
Cheapest Retailer
-
$4,456 NZD
B+
Retailer 2
-
$4,492 NZD
View
B+
Retailer 3
-
$4,531 NZD
View
Retailer 4
-
$4,531 NZD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$4,741 NZD
View
B+
Retailer 6
-
$4,795 NZD
View
B
Retailer 7
-
$5,228 NZD
View
B
Retailer 8
-
$5,531 NZD
View
B
Retailer 9
-
$5,626 NZD
View
Most Expensive
C
NZ Jewellers
1db707be-c5eb-4ffe-805f-2ad9ddca4a6d · Nov 5
$9,472 NZD
$5,251 USD
View
9 more retailers have this diamond
Prices start from $4,456 NZDSave up to $5,017 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.

B+
1.51ct Radiant
$4,456 NZD