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Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 6551072778

Certificate GIA 6551072778

Diamond specifications and retailer prices

From $10,271 NZD
$5,779 USD
As of November 2, 2026
Save $9,050 NZD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $19,321 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551072778. Listed at 9 retailers as of October 30, 2026, with prices from $10,271 to $19,321, a $9,050 spread on the same certified stone. NZ Jewellers lists it at $19,321. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.64°
Pavilion angle36.79°
OriginNatural
Grading LabGIA
CertificateGIA 6551072778
Dimensions10.74 × 6.04 × 3.69 mm
L/W Ratio1.78
Girdle conditionExtremely Thick
Key to symbols
Crystal, Feather, Needle
Top View
10.74 mm6.04 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551072778
Side View
Table 66.0%Crown 43.64°Girdle: VTK-ETKPavilion 36.79°Culet: NoneDepth 61.1%

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: $19,321 NZD|Low: $9,153 NZD|High: $19,321 NZD|Avg: $11,304 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 10$9,153 NZD
Retailer 3$10,150 NZD
Retailer 8$10,271 NZD
Retailer 7$10,735 NZD
Retailer 4$11,114 NZD
Retailer 11$11,424 NZD
Retailer 2$11,551 NZD
Retailer 6$11,551 NZD
Retailer 9$12,000 NZD
Retailer 5$17,019 NZD
NZ Jewellers$19,321 NZD

24 data points across 11 retailers

9 retailers$10,271 NZD to $19,321 NZD

Retailer 1
-
$9,153 NZD
$5,150 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$10,271 NZD
$5,779 USD
View
B+
Retailer 3
-
$10,735 NZD
$6,040 USD
View
B
Retailer 4
-
$11,114 NZD
£4,924 GBP
View
Retailer 5
-
$11,424 NZD
$6,428 USD
View
Price last confirmed 11 days ago
B
Retailer 6
-
$11,551 NZD
$6,499 USD
View
B
Retailer 7
-
$11,551 NZD
$6,499 USD
View
B
Retailer 8
-
$17,019 NZD
£7,540 GBP
View
Most Expensive
C
NZ Jewellers
2152b405-07c6-46ab-a548-fd6aa0b275c8 · Oct 30
$19,321 NZD
$10,871 USD
View
8 more retailers have this diamond
Prices start from $10,271 NZDSave up to $9,050 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
$10,271 NZD