CaratHunter
Plans
Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 5543653727

Certificate GIA 5543653727

Diamond specifications and retailer prices

From $6,756 AUD
$4,735 USD
As of November 1, 2026
Save $5,763 AUD (46%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $12,520 AUD 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 5543653727. Listed at 7 retailers as of October 30, 2026, with prices from $6,756 to $12,520, a $5,763 spread on the same certified stone. NZ Jewellers lists it at $12,520. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle43.4°
Pavilion angle42.38°
OriginNatural
Grading LabGIA
CertificateGIA 5543653727
Dimensions10.32 × 5.81 × 4.04 mm
L/W Ratio1.78
Top View
10.32 mm5.81 mm1.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 5543653727
Side View
Table 64.0%Crown 43.4°Girdle: THK-ETKPavilion 42.38°CuletDepth 69.6%

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: $12,520 AUD|Low: $5,800 AUD|High: $12,520 AUD|Avg: $7,717 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$5,800 AUD
Retailer 8$6,418 AUD
Retailer 6$6,756 AUD
Retailer 3$6,914 AUD
Retailer 2$7,186 AUD
Retailer 4$7,186 AUD
Retailer 9$7,977 AUD
Retailer 10$8,005 AUD
Retailer 5$11,446 AUD
NZ Jewellers$12,520 AUD

8 data points across 10 retailers

7 retailers$6,756 AUD to $12,520 AUD

Retailer 1
-
$5,800 AUD
$4,065 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$6,756 AUD
$4,735 USD
View
B+
Retailer 3
-
$6,914 AUD
£3,815 GBP
View
B+
Retailer 4
-
$7,186 AUD
$5,036 USD
View
B+
Retailer 5
-
$7,186 AUD
$5,036 USD
View
C
Retailer 6
-
$11,446 AUD
£6,316 GBP
View
Most Expensive
C
NZ Jewellers
5ac3d702-5ac4-41ac-b031-3fce6ae49f10 · Oct 30
$12,520 AUD
$8,774 USD
View
6 more retailers have this diamond
Prices start from $6,756 AUDSave up to $5,763 AUD

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
$6,756 AUD