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Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 2235994080

Certificate GIA 2235994080

Diamond specifications and retailer prices

From $11,913 NZD
£5,278 GBP
As of November 3, 2026
Save $11,022 NZD (48%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $22,934 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 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 2235994080. Listed at 11 retailers as of November 3, 2026, with prices from $11,913 to $22,934, a $11,022 spread on the same certified stone. NZ Jewellers lists it at $22,934. 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
SymmetryVery Good
FluorescenceStrong
Crown angle38.28°
Pavilion angle43.32°
OriginNatural
Grading LabGIA
CertificateGIA 2235994080
Dimensions10.60 × 5.95 × 4.04 mm
L/W Ratio1.78
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Needle, Pinpoint
Top View
10.60 mm5.95 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2235994080
Side View
Table 63.0%Crown 38.28°Girdle: THK-VTKPavilion 43.32°Culet: NoneDepth 67.8%

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: $22,934 NZD|Low: $10,922 NZD|High: $24,178 NZD|Avg: $15,238 NZD|-5.1%
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
November 3, 2026
Retailer 13$10,922 NZD
Retailer 2$11,913 NZD
Retailer 4$12,192 NZD
Retailer 10$12,459 NZD
Retailer 11$12,779 NZD
Retailer 7$13,142 NZD
Retailer 3$13,719 NZD
Retailer 5$13,720 NZD
Retailer 12$13,850 NZD
Retailer 6$13,923 NZD
Retailer 8$15,669 NZD
Retailer 9$19,301 NZD
NZ Jewellers$22,934 NZD

17 data points across 13 retailers

11 retailers$11,913 NZD to $22,934 NZD

Retailer 1
-
$10,922 NZD
$6,145 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$11,913 NZD
£5,278 GBP
View
B+
Retailer 3
-
$12,459 NZD
$7,010 USD
View
B+
Retailer 4
-
$12,779 NZD
$7,190 USD
View
B+
Retailer 5
-
$13,142 NZD
£5,822 GBP
View
Retailer 6
-
$13,719 NZD
$7,719 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
$13,850 NZD
$7,793 USD
View
B+
Retailer 8
-
$13,923 NZD
$7,834 USD
View
B
Retailer 9
-
$15,669 NZD
$8,816 USD
View
B
Retailer 10
-
$19,301 NZD
£8,551 GBP
View
Most Expensive
C
NZ Jewellers
ac89687c-962d-4a3e-b7d5-3dd3a6415160 · Nov 3
$22,934 NZD
$12,904 USD
View
10 more retailers have this diamond
Prices start from $11,913 NZDSave up to $11,022 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
$11,913 NZD