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Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1568097239

Certificate GIA 1568097239

Diamond specifications and retailer prices

From $5,589 AUD
As of November 6, 2026
Save $6,897 AUD (55%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,486 AUD 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 $5,589 to $12,486, a $6,897 spread on the same certified stone. NZ Jewellers lists it at $12,486. 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
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $12,486 AUD|Low: $5,532 AUD|High: $13,505 AUD|Avg: $8,556 AUD|-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$5,589 AUD
Retailer 2$5,666 AUD
Retailer 8$6,635 AUD
Retailer 4$7,466 AUD
Retailer 5$7,466 AUD
Retailer 9$7,577 AUD
Retailer 3$8,342 AUD
Retailer 6$11,889 AUD
NZ Jewellers$12,486 AUD

43 data points across 9 retailers

9 retailers$5,589 AUD to $12,486 AUD

A
Cheapest Retailer
-
$5,589 AUD
A
Retailer 2
-
$5,666 AUD
View
A
Retailer 3
-
$6,635 AUD
View
B+
Retailer 4
-
$7,466 AUD
View
B+
Retailer 5
-
$7,466 AUD
View
Retailer 6
-
$7,577 AUD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
$8,342 AUD
View
B
Retailer 8
-
$11,889 AUD
View
Most Expensive
B
NZ Jewellers
36ec7b45-4450-485b-bd0d-28a85baec80c · Nov 5
$12,486 AUD
$8,579 USD
View
8 more retailers have this diamond
Prices start from $5,589 AUDSave up to $6,897 AUD

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
$5,589 AUD