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Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 7561579444

Certificate GIA 7561579444

Diamond specifications and retailer prices

From $616 AUD
$432 USD
As of November 2, 2026
Save $2,146 AUD (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,762 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded I 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 7561579444. Listed at 12 retailers as of November 2, 2026, with prices from $616 to $2,762, a $2,146 spread on the same certified stone. NZ Jewellers lists it at $2,762. 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

0.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7561579444
Dimensions7.90 × 4.15 × 2.67 mm
L/W Ratio1.90
Girdle conditionVery Thick
Top View
7.90 mm4.15 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7561579444
Side View
Table 60.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 64.4%

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: $2,762 AUD|Low: $616 AUD|High: $2,762 AUD|Avg: $1,243 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
November 3, 2026
Retailer 4$616 AUD
Retailer 5$657 AUD
Retailer 12$813 AUD
Retailer 9$999 AUD
Retailer 11$1,062 AUD
Retailer 3$1,069 AUD
Retailer 2$1,074 AUD
Retailer 6$1,081 AUD
Retailer 7$1,300 AUD
Retailer 8$1,359 AUD
Retailer 10$2,037 AUD
NZ Jewellers$2,762 AUD

18 data points across 12 retailers

12 retailers$616 AUD to $2,762 AUD

A
Cheapest Retailer
-
$616 AUD
$432 USD
Final sale: no returns
A
Retailer 2
-
$657 AUD
₹43,858 INR
View
Retailer 3
-
$813 AUD
$570 USD
View
Price last confirmed 15 days ago
B+
Retailer 4
-
$999 AUD
$700 USD
View
B+
Retailer 5
-
$1,062 AUD
$744 USD
View
B+
Retailer 6
-
$1,069 AUD
$749 USD
View
B+
Retailer 7
-
$1,074 AUD
£593 GBP
View
B+
Retailer 8
-
$1,081 AUD
£597 GBP
View
B+
Retailer 9
-
$1,300 AUD
€868 EUR
View
B
Retailer 10
-
$1,359 AUD
ZAR 15,391 ZAR
View
Retailer 11
-
$2,037 AUD
£1,124 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
NZ Jewellers
32b23af8-fc48-47df-87b6-91c93d04c05e · Nov 3
$2,762 AUD
$1,936 USD
View
11 more retailers have this diamond
Prices start from $616 AUDSave up to $2,146 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
0.51ct Marquise
$616 AUD