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Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 2554673570

Certificate GIA 2554673570

Diamond specifications and retailer prices

From $11,121 NZD
$6,257 USD
As of November 1, 2026
Save $10,618 NZD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $21,738 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2554673570. Listed at 15 retailers as of November 1, 2026, with prices from $11,121 to $21,738, a $10,618 spread on the same certified stone. NZ Jewellers lists it at $21,738. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554673570
Dimensions6.02 × 11.23 × 3.76 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Cloud, Feather, Needle
Top View
6.02 mm11.23 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2554673570
Side View
Table 54.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.5%

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 1
Current: $21,738 NZD|Low: $11,121 NZD|High: $22,497 NZD|Avg: $13,579 NZD|-3.4%
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
November 3, 2026
Retailer 14$11,121 NZD
Retailer 15$11,517 NZD
Retailer 6$11,533 NZD
Retailer 7$11,783 NZD
Retailer 11$11,997 NZD
Retailer 4$12,102 NZD
Retailer 3$12,121 NZD
Retailer 2$12,256 NZD
Retailer 10$12,333 NZD
Retailer 5$12,836 NZD
Retailer 13$12,997 NZD
Retailer 8$13,196 NZD
Retailer 9$14,997 NZD
Retailer 12$18,114 NZD
NZ Jewellers$21,738 NZD

31 data points across 15 retailers

15 retailers$11,121 NZD to $21,738 NZD

A
Cheapest Retailer
-
$11,121 NZD
$6,257 USD
B+
Retailer 2
-
$11,517 NZD
$6,480 USD
View
B+
Retailer 3
-
$11,533 NZD
$6,489 USD
View
Retailer 4
-
$11,783 NZD
SGD 8,959 SGD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$11,997 NZD
$6,750 USD
View
Final sale: no returns
B+
Retailer 6
-
$12,102 NZD
$6,809 USD
View
B+
Retailer 7
-
$12,121 NZD
$6,820 USD
View
B+
Retailer 8
-
$12,256 NZD
£5,430 GBP
View
B+
Retailer 9
-
$12,333 NZD
£5,464 GBP
View
Retailer 10
-
$12,836 NZD
A$11,111 AUD
View
Price last confirmed 11 days ago
B+
Retailer 11
-
$12,997 NZD
$7,313 USD
View
B+
Retailer 12
-
$13,196 NZD
$7,425 USD
View
B
Retailer 13
-
$14,997 NZD
$8,438 USD
View
B
Retailer 14
-
$18,114 NZD
£8,025 GBP
View
Most Expensive
B
NZ Jewellers
c49883fe-d6f6-4c4c-9c3e-40419c4a033f · Nov 3
$21,738 NZD
$12,231 USD
View
14 more retailers have this diamond
Prices start from $11,121 NZDSave up to $10,618 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
$11,121 NZD