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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6561292606

Certificate GIA 6561292606

Diamond specifications and retailer prices

From $11,230 AUD
₹749,572 INR
As of November 2, 2026
Save $9,387 AUD (46%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $20,617 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561292606. Listed at 22 retailers as of October 30, 2026, with prices from $11,230 to $20,617, a $9,387 spread on the same certified stone. NZ Jewellers lists it at $20,617. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6561292606
Dimensions11.40 × 5.99 × 3.60 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity
Top View
11.40 mm5.99 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6561292606
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 60.0%

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: Nov 2
Current: $20,617 AUD|Low: $11,208 AUD|High: $20,617 AUD|Avg: $14,697 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 2$11,230 AUD
Retailer 4$12,535 AUD
Retailer 12$13,412 AUD
Retailer 8$13,520 AUD
Retailer 17$13,587 AUD
Retailer 15$13,654 AUD
Retailer 16$13,655 AUD
Retailer 10$13,938 AUD
Retailer 6$14,255 AUD
Retailer 5$14,793 AUD
Retailer 3$15,021 AUD
Retailer 9$15,162 AUD
Retailer 11$15,583 AUD
Retailer 7$17,069 AUD
Retailer 14$18,174 AUD
Retailer 13$19,319 AUD
NZ Jewellers$20,617 AUD

26 data points across 17 retailers

22 retailers$11,230 AUD to $20,617 AUD

A
Cheapest Retailer
-
$11,230 AUD
₹749,572 INR
A
Retailer 2
-
$11,388 AUD
$7,981 USD
View
A
Retailer 3
-
$11,568 AUD
View
B+
Retailer 4
-
$12,535 AUD
$8,785 USD
View
B+
Retailer 5
-
$12,669 AUD
$8,879 USD
View
B+
Retailer 6
-
$13,039 AUD
$9,138 USD
View
B+
Retailer 7
-
$13,412 AUD
£7,401 GBP
View
B+
Retailer 8
-
$13,520 AUD
$9,475 USD
View
Retailer 9
-
$13,587 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$13,654 AUD
$9,569 USD
View
Final sale: no returns
B+
Retailer 11
-
$13,655 AUD
$9,570 USD
View
B+
Retailer 12
-
$13,938 AUD
£7,691 GBP
View
B+
Retailer 13
-
$14,255 AUD
$9,990 USD
View
B+
Retailer 14
-
$14,775 AUD
$10,354 USD
View
B+
Retailer 15
-
$14,793 AUD
$10,367 USD
View
B+
Retailer 16
-
$15,021 AUD
$10,527 USD
View
B
Retailer 17
-
$15,162 AUD
$10,626 USD
View
B+
Retailer 18
-
$15,583 AUD
€10,401 EUR
View
B
Retailer 19
-
$17,069 AUD
$11,962 USD
View
B
Retailer 20
-
$18,174 AUD
ZAR 205,758 ZAR
View
B
Retailer 21
-
$19,319 AUD
£10,661 GBP
View
Most Expensive
B
NZ Jewellers
41d27a8a-ad8c-4bdf-a0bc-d2fa15a3f87a · Oct 30
$20,617 AUD
$14,449 USD
View
21 more retailers have this diamond
Prices start from $11,230 AUDSave up to $9,387 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
$11,230 AUD