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Marquise|Natural|GIA

1.51ct M SI1 Marquise Natural Diamond

EX • M/SI1 • GIA 6541762945

Certificate GIA 6541762945

Diamond specifications and retailer prices

From $5,358 NZD
As of November 3, 2026
Save $4,225 NZD (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $9,582 NZD at NZ Jewellers · As of November 3, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541762945. Listed at 6 retailers as of November 3, 2026, with prices from $5,358 to $9,582, a $4,225 spread on the same certified stone. NZ Jewellers lists it at $9,582. 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
M
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle39.81°
Pavilion angle39.26°
OriginNatural
Grading LabGIA
CertificateGIA 6541762945
Dimensions10.82 × 5.87 × 3.82 mm
L/W Ratio1.84
Girdle conditionVery Thick
Key to symbols
Crystal, Natural
Top View
10.82 mm5.87 mm1.51 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6541762945
Side View
Table 58.0%Crown 39.81°GirdlePavilion 39.26°CuletDepth 65.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $9,582 NZD|Low: $5,358 NZD|High: $10,087 NZD|Avg: $6,958 NZD|-5.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4$5,358 NZD
Retailer 6$5,500 NZD
Retailer 3$5,509 NZD
Retailer 2$5,628 NZD
Retailer 5$5,711 NZD
NZ Jewellers$9,582 NZD
Retailer 7$10,068 NZD

32 data points across 7 retailers

6 retailers$5,358 NZD to $9,582 NZD

B+
Cheapest Retailer
-
$5,358 NZD
B+
Retailer 2
-
$5,500 NZD
View
B+
Retailer 3
-
$5,509 NZD
View
B+
Retailer 4
-
$5,628 NZD
View
B+
Retailer 5
-
$5,711 NZD
View
Most Expensive
C
NZ Jewellers
b4c3c89b-8a51-4fad-ba38-925304eea404 · Nov 3
$9,582 NZD
$5,312 USD
View
5 more retailers have this diamond
Prices start from $5,358 NZDSave up to $4,225 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.

B+
1.51ct Marquise
$5,358 NZD