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Marquise|Natural|GIA

0.90ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 2557985642

Certificate GIA 2557985642

Diamond specifications and retailer prices

From $2,761 AUD
$1,935 USD
As of October 30, 2026
Save $2,245 AUD (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,006 AUD at Riddles Jewelry · As of November 2, 2026
View at Riddles Jewelry

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded H 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 2557985642. Listed at 9 retailers as of October 30, 2026, with prices from $2,761 to $5,006, a $2,245 spread on the same certified stone. Riddles Jewelry lists it at $5,006. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557985642
Dimensions9.63 × 5.07 × 3.14 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Crystal, Feather, Knot
Top View
9.63 mm5.07 mm0.90 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557985642
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.9%

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 30
Current: $4,932 AUD|Low: $2,761 AUD|High: $5,006 AUD|Avg: $3,432 AUD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Riddles Jewelry
November 2, 2026
Retailer 7$2,761 AUD
Retailer 8$3,298 AUD
Retailer 3$3,420 AUD
Retailer 6$3,453 AUD
Retailer 5$3,621 AUD
Retailer 2$4,468 AUD
Retailer 4$4,893 AUD
Retailer 1$4,932 AUD
Riddles Jewelry$5,006 AUD

32 data points across 9 retailers

9 retailers$2,761 AUD to $5,006 AUD

B+
Cheapest Retailer
-
$2,761 AUD
$1,935 USD
B+
Retailer 2
-
$3,298 AUD
SGD 3,123 SGD
View
B
Retailer 3
-
$3,420 AUD
$2,397 USD
View
B+
Retailer 4
-
$3,453 AUD
$2,420 USD
View
B
Retailer 5
-
$3,621 AUD
$2,538 USD
View
B
Retailer 6
-
$4,403 AUD
$3,086 USD
View
B
Retailer 7
-
$4,468 AUD
£2,466 GBP
View
B
Retailer 8
-
$4,932 AUD
€3,292 EUR
View
Most Expensive
B
Riddles Jewelry
1997151045 · Nov 2
$5,006 AUD
$3,508 USD
View
8 more retailers have this diamond
Prices start from $2,761 AUDSave up to $2,245 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
$2,761 AUD