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Marquise|Natural|GIA

1.51ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 6542470783

Certificate GIA 6542470783

Diamond specifications and retailer prices

From $13,062 AUD
$9,154 USD
As of October 28, 2026
Save $10,402 AUD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $23,464 AUD at NZ Jewellers · As of October 27, 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 H 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 6542470783. Listed at 14 retailers as of October 27, 2026, with prices from $13,062 to $23,464, a $10,402 spread on the same certified stone. NZ Jewellers lists it at $23,464. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 6542470783
Dimensions11.78 × 5.93 × 3.70 mm
L/W Ratio1.99
Top View
11.78 mm5.93 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542470783
Side View
Table 59.0%CrownGirdle: STK-VTKPavilion 39.8°Culet: NoneDepth 62.4%

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: Oct 28
Current: $23,464 AUD|Low: $12,988 AUD|High: $23,464 AUD|Avg: $16,433 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
October 29, 2026
Retailer 3$12,988 AUD
Retailer 13$13,062 AUD
Retailer 5$13,552 AUD
Retailer 12$14,078 AUD
Retailer 4$14,196 AUD
Retailer 11$15,252 AUD
Retailer 2$15,418 AUD
Retailer 10$15,486 AUD
Retailer 7$16,245 AUD
Retailer 9$16,575 AUD
Retailer 14$17,598 AUD
Retailer 6$17,678 AUD
Retailer 15$18,524 AUD
Retailer 8$22,105 AUD
NZ Jewellers$23,464 AUD

39 data points across 15 retailers

14 retailers$13,062 AUD to $23,464 AUD

B+
Cheapest Retailer
-
$13,062 AUD
$9,154 USD
B
Retailer 2
-
$13,552 AUD
CA$13,191 CAD
View
Retailer 3
-
$14,078 AUD
$9,866 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$14,196 AUD
$9,949 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$15,252 AUD
$10,689 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$15,418 AUD
£8,508 GBP
View
Retailer 7
-
$15,486 AUD
$10,853 USD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$16,245 AUD
$11,385 USD
View
B
Retailer 9
-
$16,575 AUD
€11,063 EUR
View
B
Retailer 10
-
$17,598 AUD
$12,333 USD
View
B
Retailer 11
-
$17,678 AUD
$12,389 USD
View
Retailer 12
-
$18,524 AUD
$12,982 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$22,105 AUD
£12,198 GBP
View
Most Expensive
B
NZ Jewellers
240641f6-00a5-4299-b027-002ec89afdb8 · Oct 27
$23,464 AUD
$16,444 USD
View
13 more retailers have this diamond
Prices start from $13,062 AUDSave up to $10,402 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
$13,062 AUD