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Marquise|Natural|GIA

0.90ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 7566551110

Certificate GIA 7566551110

Diamond specifications and retailer prices

From $3,604 AUD
SGD 3,421 SGD
As of October 31, 2026
Save $3,125 AUD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,729 AUD at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

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 7566551110. Listed at 14 retailers as of October 31, 2026, with prices from $3,604 to $6,729, a $3,125 spread on the same certified stone. Helzberg Diamonds lists it at $6,729. 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
FluorescenceNone
Crown angle39.65°
Pavilion angle38.46°
OriginNatural
Grading LabGIA
CertificateGIA 7566551110
Dimensions9.55 × 5.02 × 3.06 mm
L/W Ratio1.90
Culet sizeNone
Top View
9.55 mm5.02 mm0.90 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566551110
Side View
Table 60.0%Crown 39.65°Girdle: STK-VTKPavilion 38.46°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $6,729 AUD|Low: $3,848 AUD|High: $6,729 AUD|Avg: $4,746 AUD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 13$3,848 AUD
Retailer 8$3,851 AUD
Retailer 3$3,884 AUD
Retailer 12$3,914 AUD
Retailer 7$4,224 AUD
Retailer 5$4,261 AUD
Retailer 11$4,575 AUD
Retailer 6$4,710 AUD
Retailer 4$4,722 AUD
Retailer 2$4,909 AUD
Retailer 10$5,966 AUD
Retailer 9$6,314 AUD
Helzberg Diamonds$6,729 AUD

23 data points across 13 retailers

14 retailers$3,604 AUD to $6,729 AUD

B+
Cheapest Retailer
-
$3,604 AUD
SGD 3,421 SGD
B+
Retailer 2
-
$3,848 AUD
$2,703 USD
View
B+
Retailer 3
-
$3,851 AUD
$2,705 USD
View
B+
Retailer 4
-
$3,884 AUD
$2,728 USD
View
B+
Retailer 5
-
$3,914 AUD
$2,750 USD
View
B+
Retailer 6
-
$4,224 AUD
£2,337 GBP
View
B+
Retailer 7
-
$4,261 AUD
SGD 4,045 SGD
View
B+
Retailer 8
-
$4,575 AUD
$3,214 USD
View
B+
Retailer 9
-
$4,710 AUD
€3,151 EUR
View
B+
Retailer 10
-
$4,722 AUD
$3,317 USD
View
B+
Retailer 11
-
$4,909 AUD
$3,448 USD
View
B
Retailer 12
-
$5,966 AUD
$4,191 USD
View
B
Retailer 13
-
$6,314 AUD
$4,435 USD
View
Most Expensive
B
Helzberg Diamonds
XZRNLMMLLHHHG · Oct 31
$6,729 AUD
$4,727 USD
View
13 more retailers have this diamond
Prices start from $3,604 AUDSave up to $3,125 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.

B+
0.90ct Marquise
$3,604 AUD