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Marquise|Natural|GIA

0.90ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 2557365490

Certificate GIA 2557365490

Diamond specifications and retailer prices

From $3,265 AUD
SGD 3,099 SGD
As of October 31, 2026
Save $2,828 AUD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,093 AUD at Helzberg Diamonds · As of October 30, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557365490. Listed at 14 retailers as of October 30, 2026, with prices from $3,265 to $6,093, a $2,828 spread on the same certified stone. Helzberg Diamonds lists it at $6,093. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.90
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.56°
Pavilion angle38.14°
OriginNatural
Grading LabGIA
CertificateGIA 2557365490
Dimensions9.43 × 5.05 × 2.98 mm
L/W Ratio1.87
Culet sizeNone
Top View
9.43 mm5.05 mm0.90 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557365490
Side View
Table 62.0%Crown 39.56°Girdle: STK-VTKPavilion 38.14°Culet: NoneDepth 59.0%

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 31
Current: $6,093 AUD|Low: $3,265 AUD|High: $6,217 AUD|Avg: $4,328 AUD|-2.0%
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 12$3,265 AUD
Retailer 9$3,485 AUD
Retailer 10$3,522 AUD
Retailer 8$3,545 AUD
Retailer 6$3,829 AUD
Retailer 4$3,860 AUD
Retailer 13$4,165 AUD
Retailer 3$4,338 AUD
Retailer 2$4,447 AUD
Retailer 7$4,565 AUD
Retailer 11$5,404 AUD
Retailer 5$5,737 AUD
Helzberg Diamonds$6,093 AUD

36 data points across 13 retailers

14 retailers$3,265 AUD to $6,093 AUD

A
Cheapest Retailer
-
$3,265 AUD
SGD 3,099 SGD
B+
Retailer 2
-
$3,485 AUD
$2,448 USD
View
B+
Retailer 3
-
$3,522 AUD
$2,474 USD
View
B+
Retailer 4
-
$3,545 AUD
$2,490 USD
View
B+
Retailer 5
-
$3,829 AUD
£2,118 GBP
View
B+
Retailer 6
-
$3,860 AUD
SGD 3,664 SGD
View
B+
Retailer 7
-
$4,165 AUD
$2,926 USD
View
B
Retailer 8
-
$4,338 AUD
$3,047 USD
View
B+
Retailer 9
-
$4,447 AUD
$3,124 USD
View
B+
Retailer 10
-
$4,565 AUD
€3,054 EUR
View
B
Retailer 11
-
$5,089 AUD
$3,575 USD
View
B
Retailer 12
-
$5,404 AUD
$3,796 USD
View
B
Retailer 13
-
$5,737 AUD
$4,030 USD
View
Most Expensive
B
Helzberg Diamonds
XZRILLNJMLKPG · Oct 30
$6,093 AUD
$4,280 USD
View
13 more retailers have this diamond
Prices start from $3,265 AUDSave up to $2,828 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
$3,265 AUD