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Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

ID • K/SI2 • GIA 1553383300

Certificate GIA 1553383300

Diamond specifications and retailer prices

From $8,143 NZD
As of November 5, 2026
Save $10,109 NZD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $18,252 NZD 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 1553383300. Listed at 11 retailers as of November 5, 2026, with prices from $8,143 to $18,252, a $10,109 spread on the same certified stone. NZ Jewellers lists it at $18,252. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553383300
Dimensions11.04 × 5.99 × 3.80 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Knot, Crystal, Cavity, Needle, Indented Natural
Top View
11.04 mm5.99 mm1.51 ctK / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1553383300
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NDepth 63.4%

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 5
Current: $18,252 NZD|Low: $8,143 NZD|High: $20,269 NZD|Avg: $12,427 NZD|-10.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$8,143 NZD
Retailer 11$9,077 NZD
Retailer 10$9,433 NZD
Retailer 6$10,160 NZD
Retailer 8$10,450 NZD
Retailer 4$10,466 NZD
Retailer 3$10,522 NZD
Retailer 2$11,853 NZD
Retailer 9$15,963 NZD
Retailer 5$16,033 NZD
NZ Jewellers$18,252 NZD

41 data points across 11 retailers

11 retailers$8,143 NZD to $18,252 NZD

A
Cheapest Retailer
-
$8,143 NZD
B+
Retailer 2
-
$9,077 NZD
View
B+
Retailer 3
-
$9,433 NZD
View
B+
Retailer 4
-
$10,160 NZD
View
B+
Retailer 5
-
$10,450 NZD
View
B+
Retailer 6
-
$10,466 NZD
View
B+
Retailer 7
-
$10,522 NZD
View
B
Retailer 8
-
$11,853 NZD
View
B
Retailer 9
-
$15,963 NZD
View
B
Retailer 10
-
$16,033 NZD
View
Most Expensive
B
NZ Jewellers
0cf6a239-952c-461e-9423-3f241acea6c2 · Nov 5
$18,252 NZD
$10,118 USD
View
10 more retailers have this diamond
Prices start from $8,143 NZDSave up to $10,109 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
$8,143 NZD