CaratHunter
Plans
Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2566364425

Certificate GIA 2566364425

Diamond specifications and retailer prices

From $9,477 AUD
₹632,523 INR
As of November 2, 2026
Save $11,626 AUD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $21,102 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566364425. Listed at 21 retailers as of October 30, 2026, with prices from $9,477 to $21,102, a $11,626 spread on the same certified stone. NZ Jewellers lists it at $21,102. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2566364425
Dimensions11.56 × 6.06 × 3.74 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
11.56 mm6.06 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566364425
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.7%

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: $21,102 AUD|Low: $9,477 AUD|High: $21,439 AUD|Avg: $12,494 AUD|-1.6%
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 16$9,477 AUD
Retailer 20$9,750 AUD
Retailer 9$10,095 AUD
Retailer 13$10,590 AUD
Retailer 11$10,904 AUD
Retailer 19$11,063 AUD
Retailer 18$11,501 AUD
Retailer 10$11,629 AUD
Retailer 6$11,646 AUD
Retailer 3$11,666 AUD
Retailer 14$12,156 AUD
Retailer 5$12,177 AUD
Retailer 12$12,336 AUD
Retailer 21$12,546 AUD
Retailer 7$12,617 AUD
Retailer 2$12,709 AUD
Retailer 4$12,892 AUD
Retailer 17$12,960 AUD
Retailer 15$14,442 AUD
Retailer 8$17,678 AUD
NZ Jewellers$21,102 AUD

12 data points across 21 retailers

21 retailers$9,477 AUD to $21,102 AUD

B+
Cheapest Retailer
-
$9,477 AUD
₹632,523 INR
B+
Retailer 2
-
$9,750 AUD
View
B+
Retailer 3
-
$10,095 AUD
$7,075 USD
View
Final sale: no returns
B+
Retailer 4
-
$10,590 AUD
$7,422 USD
View
B+
Retailer 5
-
$10,904 AUD
$7,642 USD
View
B+
Retailer 6
-
$11,063 AUD
$7,753 USD
View
B
Retailer 7
-
$11,501 AUD
$8,060 USD
View
B
Retailer 8
-
$11,629 AUD
$8,150 USD
View
B
Retailer 9
-
$11,646 AUD
$8,162 USD
View
B
Retailer 10
-
$11,666 AUD
£6,438 GBP
View
Retailer 11
-
$12,156 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$12,177 AUD
£6,719 GBP
View
Retailer 13
-
$12,336 AUD
$8,645 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
$12,546 AUD
$8,792 USD
View
B
Retailer 15
-
$12,617 AUD
$8,842 USD
View
B
Retailer 16
-
$12,709 AUD
$8,907 USD
View
B
Retailer 17
-
$12,892 AUD
$9,035 USD
View
B
Retailer 18
-
$12,960 AUD
€8,650 EUR
View
B
Retailer 19
-
$14,442 AUD
$10,121 USD
View
B
Retailer 20
-
$17,678 AUD
£9,755 GBP
View
Most Expensive
B
NZ Jewellers
6bb1fa8d-6ca7-4383-a961-5087c68daff0 · Oct 30
$21,102 AUD
$14,789 USD
View
20 more retailers have this diamond
Prices start from $9,477 AUDSave up to $11,626 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
$9,477 AUD