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Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

VG • K/SI2 • GIA 2556257527

Certificate GIA 2556257527

Diamond specifications and retailer prices

From $7,219 NZD
As of November 5, 2026
Save $8,505 NZD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $16,814 NZD at NZ Jewellers · As of September 25, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556257527. Listed at 14 retailers as of November 4, 2026, with a 118% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556257527
Dimensions10.91 × 5.89 × 3.88 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
10.91 mm5.89 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556257527
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.9%

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: $8,085 NZD|Low: $7,219 NZD|High: $16,203 NZD|Avg: $9,774 NZD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 3$7,219 NZD
Retailer 8$7,250 NZD
Retailer 13$7,834 NZD
Retailer 4$8,018 NZD
Retailer 1$8,085 NZD
Retailer 11$8,143 NZD
Retailer 7$8,659 NZD
Retailer 2$8,828 NZD
Retailer 9$9,341 NZD
Retailer 5$9,530 NZD
Retailer 12$11,011 NZD
Retailer 6$14,633 NZD
Retailer 10$15,725 NZD

27 data points across 13 retailers

14 retailers$7,219 NZD to $15,725 NZD

A
Cheapest Retailer
-
$7,219 NZD
A
Retailer 2
-
$7,250 NZD
View
A
Retailer 3
-
$7,834 NZD
View
B+
Retailer 4
-
$8,018 NZD
View
B+
Retailer 5
-
$8,085 NZD
View
Final sale: no returns
A
Retailer 6
-
$8,143 NZD
View
B+
Retailer 7
-
$8,659 NZD
View
B+
Retailer 8
-
$8,828 NZD
View
B+
Retailer 9
-
$9,341 NZD
View
B+
Retailer 10
-
$9,530 NZD
View
B+
Retailer 11
-
$11,011 NZD
View
B
Retailer 12
-
$14,633 NZD
View
B
Retailer 13
-
$15,725 NZD
View
Most Expensive
NZ Jewellers
8d27364e-0cc6-4b8a-ac56-fb8dae0ef48c · Sep 25
$16,814 NZD
$9,321 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $7,219 NZDSave up to $8,505 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 Marquise
$7,219 NZD