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Marquise|Natural|GIA

0.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1553995737

Certificate GIA 1553995737

Diamond specifications and retailer prices

From $658 AUD
HK$3,600 HKD
As of November 1, 2026
Save $1,802 AUD (73%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,460 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded I 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 1553995737. Listed at 14 retailers as of November 1, 2026, with prices from $658 to $2,460, a $1,802 spread on the same certified stone. NZ Jewellers lists it at $2,460. 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

0.50
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1553995737
Dimensions7.77 × 4.33 × 2.61 mm
L/W Ratio1.79
Key to symbols
Twinning Wisp, Feather
Top View
7.77 mm4.33 mm0.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 1553995737
Side View
Table 62.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 60.2%

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 1
Current: $2,460 AUD|Low: $639 AUD|High: $2,460 AUD|Avg: $1,061 AUD|+3.7%
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
November 3, 2026
Retailer 3$658 AUD
Retailer 14$722 AUD
Retailer 11$785 AUD
Retailer 5$819 AUD
Retailer 12$845 AUD
Retailer 13$845 AUD
Retailer 6$905 AUD
Retailer 10$905 AUD
Retailer 7$937 AUD
Retailer 4$982 AUD
Retailer 2$991 AUD
Retailer 9$1,166 AUD
Retailer 8$1,812 AUD
NZ Jewellers$2,460 AUD

31 data points across 14 retailers

14 retailers$658 AUD to $2,460 AUD

A
Cheapest Retailer
-
$658 AUD
HK$3,600 HKD
B+
Retailer 2
-
$722 AUD
$506 USD
View
Final sale: no returns
A
Retailer 3
-
$785 AUD
$550 USD
View
Retailer 4
-
$819 AUD
SGD 776 SGD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$845 AUD
$592 USD
View
A
Retailer 6
-
$845 AUD
$592 USD
View
B+
Retailer 7
-
$905 AUD
$634 USD
View
Retailer 8
-
$905 AUD
$634 USD
View
Price last confirmed 15 days ago
B+
Retailer 9
-
$937 AUD
£517 GBP
View
B+
Retailer 10
-
$982 AUD
$688 USD
View
B+
Retailer 11
-
$991 AUD
£547 GBP
View
B
Retailer 12
-
$1,166 AUD
€778 EUR
View
B
Retailer 13
-
$1,812 AUD
£1,000 GBP
View
Most Expensive
B
NZ Jewellers
f71baf55-1e42-41d2-9725-8ffb66d927e9 · Nov 3
$2,460 AUD
$1,724 USD
View
13 more retailers have this diamond
Prices start from $658 AUDSave up to $1,802 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
0.50ct Marquise
$658 AUD