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Marquise|Natural|GIA

0.90ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1557992950

Certificate GIA 1557992950

Diamond specifications and retailer prices

From $2,824 AUD
HK$15,500 HKD
As of October 26, 2026
Save $4,628 AUD (62%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,072 AUD at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1557992950. Listed at 13 retailers as of October 26, 2026, with a 164% 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

0.90
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle40.26°
OriginNatural
Grading LabGIA
CertificateGIA 1557992950
Dimensions10.52 × 4.78 × 3.11 mm
L/W Ratio2.20
Key to symbols
Feather
Top View
10.52 mm4.78 mm0.90 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1557992950
Side View
Table 57.0%CrownGirdle: STK-VTKPavilion 40.26°Culet: NoneDepth 65.0%

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: Oct 26
Current: $8,072 AUD|Low: $2,824 AUD|High: $8,465 AUD|Avg: $4,949 AUD|-4.6%
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
October 27, 2026
Retailer 3$2,824 AUD
Retailer 2$3,428 AUD
Retailer 13$3,559 AUD
Retailer 4$3,861 AUD
Retailer 6$3,957 AUD
Retailer 11$4,009 AUD
Retailer 5$4,207 AUD
Retailer 10$4,547 AUD
Retailer 8$4,677 AUD
Retailer 12$4,813 AUD
Retailer 14$5,860 AUD
Retailer 9$6,773 AUD
Retailer 7$7,453 AUD
NZ Jewellers$8,072 AUD

26 data points across 14 retailers

13 retailers$2,824 AUD to $7,453 AUD

A
Cheapest Retailer
-
$2,824 AUD
HK$15,500 HKD
Retailer 2
-
$3,428 AUD
€2,293 EUR
View
Price last confirmed 4 days ago
B+
Retailer 3
-
$3,559 AUD
$2,500 USD
View
B+
Retailer 4
-
$3,861 AUD
$2,712 USD
View
B+
Retailer 5
-
$3,957 AUD
SGD 3,756 SGD
View
B+
Retailer 6
-
$4,009 AUD
$2,816 USD
View
B+
Retailer 7
-
$4,207 AUD
$2,955 USD
View
Retailer 8
-
$4,547 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$4,677 AUD
€3,129 EUR
View
Retailer 10
-
$5,860 AUD
€3,920 EUR
View
Price last confirmed 7 days ago
B
Retailer 11
-
$6,773 AUD
£3,746 GBP
View
B
Retailer 12
-
$7,453 AUD
£4,122 GBP
View
Most Expensive
NZ Jewellers
a284c0a3-a01c-45e0-8267-667b4cb799b5 · Oct 24
$8,072 AUD
$5,670 USD
View
Price last confirmed 7 days ago
12 more retailers have this diamond
Prices start from $2,824 AUDSave up to $4,628 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
0.90ct Marquise
$2,824 AUD