Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1568097239

Certificate GIA 1568097239

Diamond specifications and retailer prices

From $3,840 USD
As of November 6, 2026
Save $4,739 USD (55%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,579 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise 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 1568097239. Listed at 9 retailers as of November 5, 2026, with prices from $3,840 to $8,579, a $4,739 spread on the same certified stone. NZ Jewellers lists it at $8,579. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1568097239
Dimensions12.66 × 5.75 × 3.59 mm
L/W Ratio2.20
Girdle conditionThick to Very Thick
Key to symbols
Crystal, Feather, Knot
Top View
12.66 mm5.75 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1568097239
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.4%

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: $8,579 USD|Low: $3,801 USD|High: $9,279 USD|Avg: $5,879 USD|-7.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$3,840 USD
Retailer 2$3,893 USD
Retailer 8$4,559 USD
Retailer 4$5,130 USD
Retailer 5$5,130 USD
Retailer 9$5,206 USD
Retailer 3$5,732 USD
Retailer 6$8,169 USD
NZ Jewellers$8,579 USD

43 data points across 9 retailers

9 retailers$3,840 USD to $8,579 USD

A
Cheapest Retailer
-
$3,840 USD
A
Retailer 2
-
$3,893 USD
View
A
Retailer 3
-
$4,559 USD
View
B+
Retailer 4
-
$5,130 USD
View
B+
Retailer 5
-
$5,130 USD
View
Retailer 6
-
$5,206 USD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$5,732 USD
View
B
Retailer 8
-
$8,169 USD
View
Most Expensive
B
NZ Jewellers
36ec7b45-4450-485b-bd0d-28a85baec80c · Nov 5
$8,579 USD
View
8 more retailers have this diamond
Prices start from $3,840 USDSave up to $4,739 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 Marquise
$3,840 USD