Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6552492309

Certificate GIA 6552492309

Diamond specifications and retailer prices

From $2,494 USD
As of November 6, 2026
Save $3,192 USD (56%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,686 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 6552492309. Listed at 9 retailers as of November 5, 2026, with prices from $2,494 to $5,686, a $3,192 spread on the same certified stone. NZ Jewellers lists it at $5,686. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6552492309
Dimensions7.26 × 7.31 × 4.57 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
7.26 mm7.31 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552492309
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41°Culet: NoneDepth 62.8%

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: Nov 6
Current: $5,686 USD|Low: $2,494 USD|High: $5,964 USD|Avg: $3,996 USD|-4.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$2,494 USD
Retailer 7$2,898 USD
Retailer 9$3,129 USD
Retailer 6$3,336 USD
Retailer 4$3,407 USD
Retailer 5$3,621 USD
Retailer 3$4,308 USD
Retailer 8$5,443 USD
NZ Jewellers$5,686 USD

27 data points across 9 retailers

9 retailers$2,494 USD to $5,686 USD

A
Cheapest Retailer
-
$2,494 USD
A
Retailer 2
-
$2,898 USD
View
A
Retailer 3
-
$3,129 USD
View
A
Retailer 4
-
$3,336 USD
View
A
Retailer 5
-
$3,407 USD
View
A
Retailer 6
-
$3,621 USD
View
B+
Retailer 7
-
$4,308 USD
View
B
Retailer 8
-
$5,443 USD
View
Most Expensive
B
NZ Jewellers
c02d01b1-3c8c-493e-970d-669c53f3e4b1 · Nov 5
$5,686 USD
View
8 more retailers have this diamond
Prices start from $2,494 USDSave up to $3,192 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 Round
$2,494 USD