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Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 6552832032

Certificate GIA 6552832032

Diamond specifications and retailer prices

From $13,490 NZD
$7,590 USD
As of November 1, 2026
Save $9,946 NZD (42%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $25,010 NZD at NZ Jewellers · As of October 17, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552832032. Listed at 16 retailers as of November 1, 2026, with a 74% 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.79°
Pavilion angle37.53°
OriginNatural
Grading LabGIA
CertificateGIA 6552832032
Dimensions10.97 × 5.92 × 3.63 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.97 mm5.92 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552832032
Side View
Table 60.0%Crown 40.79°Girdle: STK-VTKPavilion 37.53°Culet: NoneDepth 61.4%

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 1
Current: $25,010 NZD|Low: $12,923 NZD|High: $25,010 NZD|Avg: $17,173 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 3, 2026
Retailer 8$12,923 NZD
Retailer 6$13,490 NZD
Retailer 9$13,612 NZD
Retailer 7$14,679 NZD
Retailer 12$14,785 NZD
Retailer 15$15,630 NZD
Retailer 2$16,561 NZD
Retailer 13$16,833 NZD
Retailer 17$16,891 NZD
Retailer 14$17,434 NZD
Retailer 4$17,915 NZD
Retailer 16$17,915 NZD
Retailer 3$18,383 NZD
Retailer 5$18,502 NZD
Retailer 10$18,828 NZD
Retailer 11$23,436 NZD
NZ Jewellers$25,010 NZD

24 data points across 17 retailers

16 retailers$13,490 NZD to $23,436 NZD

B+
Cheapest Retailer
-
$13,490 NZD
$7,590 USD
B+
Retailer 2
-
$14,679 NZD
$8,259 USD
View
B+
Retailer 3
-
$14,785 NZD
CA$11,554 CAD
View
B
Retailer 4
-
$15,630 NZD
$8,794 USD
View
B
Retailer 5
-
$16,561 NZD
£7,337 GBP
View
B
Retailer 6
-
$16,833 NZD
$9,471 USD
View
B
Retailer 7
-
$16,891 NZD
$9,504 USD
View
B
Retailer 8
-
$17,434 NZD
$9,809 USD
View
B
Retailer 9
-
$17,915 NZD
$10,080 USD
View
B
Retailer 10
-
$17,915 NZD
$10,080 USD
View
Retailer 11
-
$18,383 NZD
$10,343 USD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$18,502 NZD
$10,410 USD
View
B
Retailer 13
-
$18,828 NZD
€10,089 EUR
View
B
Retailer 14
-
$23,436 NZD
£10,383 GBP
View
Retailer 15
-
$25,010 NZD
$14,072 USD
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
593bb57d-3455-48da-a112-0e600b6ca513 · Oct 17
$25,010 NZD
$14,072 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from $13,490 NZDSave up to $9,946 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
$13,490 NZD