CaratHunter
Plans
Marquise|Natural|GIA

0.53ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6545889794

Certificate GIA 6545889794

Diamond specifications and retailer prices

From $599 AUD
$421 USD
As of October 29, 2026
Save $1,398 AUD (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,708 AUD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 0.53ct natural marquise diamond

This 0.53ct 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 6545889794. Listed at 10 retailers as of October 26, 2026, with a 233% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.53
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545889794
Dimensions7.95 × 4.24 × 2.61 mm
L/W Ratio1.88
Top View
7.95 mm4.24 mm0.53 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545889794
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.6%

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 29
Current: $2,708 AUD|Low: $599 AUD|High: $3,205 AUD|Avg: $1,241 AUD|-9.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5$599 AUD
Retailer 4$643 AUD
Retailer 8$729 AUD
Retailer 9$864 AUD
Retailer 3$897 AUD
Retailer 10$907 AUD
Retailer 7$930 AUD
Retailer 2$1,280 AUD
Retailer 6$1,998 AUD
NZ Jewellers$2,708 AUD

38 data points across 10 retailers

10 retailers$599 AUD to $1,998 AUD

A
Cheapest Retailer
-
$599 AUD
$421 USD
Final sale: no returns
A
Retailer 2
-
$643 AUD
₹42,986 INR
View
A
Retailer 3
-
$729 AUD
HK$4,000 HKD
View
Retailer 4
-
$864 AUD
$607 USD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$897 AUD
$630 USD
View
Retailer 6
-
$907 AUD
SGD 861 SGD
View
Price last confirmed 8 days ago
Retailer 7
-
$930 AUD
$653 USD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
$1,280 AUD
£708 GBP
View
B
Retailer 9
-
$1,998 AUD
£1,105 GBP
View
Most Expensive
NZ Jewellers
a1c6fb37-1f6f-47e7-bd5d-5e214e2d21d6 · Oct 21
$2,708 AUD
$1,902 USD
View
Price last confirmed 12 days ago
9 more retailers have this diamond
Prices start from $599 AUDSave up to $1,398 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
0.53ct Marquise
$599 AUD