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Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 6552045873

Certificate GIA 6552045873

Diamond specifications and retailer prices

From $10,792 NZD
$6,072 USD
As of November 2, 2026
Save $9,692 NZD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $20,483 NZD at NZ Jewellers · As of October 30, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552045873. Listed at 9 retailers as of October 30, 2026, with prices from $10,792 to $20,483, a $9,692 spread on the same certified stone. NZ Jewellers lists it at $20,483. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle42.9°
Pavilion angle39.32°
OriginNatural
Grading LabGIA
CertificateGIA 6552045873
Dimensions10.50 × 5.90 × 3.98 mm
L/W Ratio1.78
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
10.50 mm5.90 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552045873
Side View
Table 56.0%Crown 42.9°Girdle: ThickPavilion 39.32°Culet: NoneDepth 67.5%

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 2
Current: $20,483 NZD|Low: $9,651 NZD|High: $20,483 NZD|Avg: $12,248 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9$9,651 NZD
Retailer 11$10,723 NZD
Retailer 8$10,792 NZD
Retailer 7$11,348 NZD
Retailer 5$11,783 NZD
Retailer 10$12,068 NZD
Retailer 6$12,247 NZD
Retailer 4$12,436 NZD
Retailer 3$12,868 NZD
Retailer 2$18,044 NZD
NZ Jewellers$20,483 NZD

10 data points across 11 retailers

9 retailers$10,792 NZD to $20,483 NZD

Retailer 1
-
$9,651 NZD
$5,430 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$10,792 NZD
$6,072 USD
View
B+
Retailer 3
-
$11,348 NZD
$6,385 USD
View
B+
Retailer 4
-
$11,783 NZD
£5,220 GBP
View
Retailer 5
-
$12,068 NZD
$6,790 USD
View
Price last confirmed 11 days ago
B
Retailer 6
-
$12,247 NZD
$6,891 USD
View
B
Retailer 7
-
$12,436 NZD
$6,997 USD
View
B
Retailer 8
-
$18,044 NZD
£7,994 GBP
View
Most Expensive
B
NZ Jewellers
fa36bc89-12e4-4b27-8be9-f83b8580a03e · Oct 30
$20,483 NZD
$11,525 USD
View
8 more retailers have this diamond
Prices start from $10,792 NZDSave up to $9,692 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
$10,792 NZD