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Marquise|Natural|GIA

1.51ct G SI2 Marquise Natural Diamond

ID • G/SI2 • GIA 5543750984

Certificate GIA 5543750984

Diamond specifications and retailer prices

From $10,289 AUD
$7,211 USD
As of October 28, 2026
Save $12,627 AUD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $22,916 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5543750984. Listed at 15 retailers as of October 28, 2026, with prices from $10,289 to $22,916, a $12,627 spread on the same certified stone. NZ Jewellers lists it at $22,916. 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
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle38.2°
Pavilion angle40.48°
OriginNatural
Grading LabGIA
CertificateGIA 5543750984
Dimensions11.32 × 5.99 × 3.81 mm
L/W Ratio1.89
Top View
11.32 mm5.99 mm1.51 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5543750984
Side View
Table 58.0%Crown 38.2°Girdle: ThickPavilion 40.48°Culet: NoneDepth 63.6%

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: Oct 28
Current: $22,916 AUD|Low: $10,289 AUD|High: $22,916 AUD|Avg: $13,877 AUD
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
Retailer 16
Retailer 17
November 2, 2026
Retailer 5$10,289 AUD
Retailer 4$11,217 AUD
Retailer 13$11,370 AUD
Retailer 15$11,922 AUD
Retailer 10$12,812 AUD
Retailer 8$12,828 AUD
Retailer 12$12,838 AUD
Retailer 16$12,912 AUD
Retailer 17$13,297 AUD
Retailer 7$13,713 AUD
Retailer 14$13,713 AUD
Retailer 3$14,021 AUD
Retailer 6$14,169 AUD
Retailer 9$14,271 AUD
Retailer 2$14,359 AUD
Retailer 11$19,095 AUD
NZ Jewellers$22,916 AUD

20 data points across 17 retailers

15 retailers$10,289 AUD to $22,916 AUD

A
Cheapest Retailer
-
$10,289 AUD
$7,211 USD
A
Retailer 2
-
$11,217 AUD
$7,861 USD
View
A
Retailer 3
-
$11,370 AUD
CA$11,067 CAD
View
B+
Retailer 4
-
$11,922 AUD
$8,355 USD
View
B+
Retailer 5
-
$12,812 AUD
£7,070 GBP
View
B+
Retailer 6
-
$12,838 AUD
$8,997 USD
View
B+
Retailer 7
-
$12,912 AUD
$9,049 USD
View
B+
Retailer 8
-
$13,297 AUD
$9,319 USD
View
B+
Retailer 9
-
$13,713 AUD
$9,610 USD
View
B+
Retailer 10
-
$13,713 AUD
$9,610 USD
View
B+
Retailer 11
-
$14,021 AUD
$9,826 USD
View
Price last confirmed 7 days ago
B+
Retailer 12
-
$14,169 AUD
$9,930 USD
View
B+
Retailer 13
-
$14,359 AUD
€9,584 EUR
View
B
Retailer 14
-
$19,095 AUD
£10,537 GBP
View
Most Expensive
B
NZ Jewellers
c063fcbe-496c-47bf-aed7-fbff7226c26f · Oct 30
$22,916 AUD
$16,060 USD
View
14 more retailers have this diamond
Prices start from $10,289 AUDSave up to $12,627 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.

A
1.51ct Marquise
$10,289 AUD