Radiant|Natural|GIA

1.51ct K SI2 Radiant Natural Diamond

ID • K/SI2 • GIA 6243086864

Certificate GIA 6243086864

Diamond specifications and retailer prices

From $1,971 USD
As of November 5, 2026
Save $3,620 USD (65%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,591 USD 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 $1,971 to $5,591, a $3,620 spread on the same certified stone. NZ Jewellers lists it at $5,591. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,591 USD|Low: $1,971 USD|High: $5,947 USD|Avg: $3,422 USD|-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$1,971 USD
Retailer 3$2,664 USD
Retailer 6$2,674 USD
Retailer 4$2,740 USD
Retailer 2$2,777 USD
Retailer 7$2,916 USD
Retailer 9$3,213 USD
Retailer 10$4,126 USD
Retailer 8$4,747 USD
NZ Jewellers$5,591 USD

26 data points across 10 retailers

10 retailers$1,971 USD to $5,591 USD

A
Cheapest Retailer
-
$1,971 USD
A
Retailer 2
-
$2,664 USD
View
A
Retailer 3
-
$2,674 USD
View
A
Retailer 4
-
$2,740 USD
View
A
Retailer 5
-
$2,777 USD
View
A
Retailer 6
-
$2,916 USD
View
A
Retailer 7
-
$3,213 USD
View
B+
Retailer 8
-
$4,126 USD
View
B+
Retailer 9
-
$4,747 USD
View
Most Expensive
B
NZ Jewellers
c933f9ce-d291-4579-89d0-8e423e614e02 · Nov 5
$5,591 USD
View
9 more retailers have this diamond
Prices start from $1,971 USDSave up to $3,620 USD

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
$1,971 USD