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Radiant|Natural|GIA

1.51ct K SI2 Radiant Natural Diamond

ID • K/SI2 • GIA 6243086864

Certificate GIA 6243086864

Diamond specifications and retailer prices

From $3,555 NZD
As of November 5, 2026
Save $6,530 NZD (65%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,086 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6243086864. Listed at 10 retailers as of November 5, 2026, with prices from $3,555 to $10,086, a $6,530 spread on the same certified stone. NZ Jewellers lists it at $10,086. 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
K
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Pavilion angle58.69°
OriginNatural
Grading LabGIA
CertificateGIA 6243086864
Dimensions7.87 × 5.63 × 3.92 mm
L/W Ratio1.40
Key to symbols
Crystal, Feather, Needle
Top View
7.87 mm5.63 mm1.51 ctK / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6243086864
Side View
Table 64.0%CrownGirdle: THN-MEDPavilion 58.69°Culet: NoneDepth 69.7%

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 5
Current: $10,086 NZD|Low: $3,555 NZD|High: $10,728 NZD|Avg: $6,173 NZD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 5$3,555 NZD
Retailer 3$4,806 NZD
Retailer 6$4,824 NZD
Retailer 4$4,943 NZD
Retailer 2$5,009 NZD
Retailer 7$5,260 NZD
Retailer 9$5,796 NZD
Retailer 10$7,443 NZD
Retailer 8$8,563 NZD
NZ Jewellers$10,086 NZD

26 data points across 10 retailers

10 retailers$3,555 NZD to $10,086 NZD

A
Cheapest Retailer
-
$3,555 NZD
A
Retailer 2
-
$4,806 NZD
View
A
Retailer 3
-
$4,824 NZD
View
A
Retailer 4
-
$4,943 NZD
View
A
Retailer 5
-
$5,009 NZD
View
A
Retailer 6
-
$5,260 NZD
View
A
Retailer 7
-
$5,796 NZD
View
B+
Retailer 8
-
$7,443 NZD
View
B+
Retailer 9
-
$8,563 NZD
View
Most Expensive
B
NZ Jewellers
c933f9ce-d291-4579-89d0-8e423e614e02 · Nov 5
$10,086 NZD
$5,591 USD
View
9 more retailers have this diamond
Prices start from $3,555 NZDSave up to $6,530 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
1.51ct Radiant
$3,555 NZD