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Marquise|Natural|GIA

0.90ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 7558581586

Certificate GIA 7558581586

Diamond specifications and retailer prices

From $3,965 AUD
$2,785 USD
As of October 31, 2026
Save $3,229 AUD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,949 AUD at NZ Jewellers · As of September 30, 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 D 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 7558581586. Listed at 15 retailers as of October 29, 2026, with a 81% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558581586
Dimensions10.22 × 4.97 × 3.11 mm
L/W Ratio2.06
Girdle conditionFaceted
Top View
10.22 mm4.97 mm0.90 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7558581586
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.6%

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: $4,750 AUD|Low: $3,061 AUD|High: $7,245 AUD|Avg: $4,563 AUD|-2.6%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 17$3,061 AUD
Retailer 2$3,593 AUD
Retailer 15$3,694 AUD
Retailer 7$3,724 AUD
Retailer 3$3,839 AUD
Retailer 9$3,872 AUD
Retailer 13$3,965 AUD
Retailer 4$4,230 AUD
Retailer 12$4,282 AUD
Retailer 5$4,301 AUD
Retailer 6$4,554 AUD
Retailer 10$4,581 AUD
Retailer 1$4,750 AUD
Retailer 14$4,956 AUD
Retailer 8$6,193 AUD
Retailer 16$6,253 AUD
Retailer 11$7,194 AUD

38 data points across 17 retailers

15 retailers$3,965 AUD to $7,194 AUD

Retailer 1
-
$3,061 AUD
HK$16,800 HKD
Price last confirmed 28 days ago
Retailer 2
-
$3,694 AUD
€2,471 EUR
View
Price last confirmed 27 days ago
Retailer 3
-
$3,724 AUD
$2,616 USD
View
Price last confirmed 32 days ago
B+
Retailer 4
-
$3,965 AUD
$2,785 USD
View
B+
Retailer 5
-
$4,282 AUD
CA$4,178 CAD
View
Retailer 6
-
$4,301 AUD
SGD 4,083 SGD
View
Price last confirmed 27 days ago
B+
Retailer 7
-
$4,542 AUD
View
Retailer 8
-
$4,554 AUD
View
Price last confirmed 29 days ago
B+
Retailer 9
-
$4,581 AUD
£2,534 GBP
View
B+
Retailer 10
-
$4,750 AUD
€3,178 EUR
View
B
Retailer 11
-
$4,956 AUD
$3,481 USD
View
Retailer 12
-
$6,193 AUD
ZAR 70,283 ZAR
View
Price last confirmed 33 days ago
Retailer 13
-
$6,253 AUD
$4,393 USD
View
Price last confirmed 27 days ago
B
Retailer 14
-
$7,194 AUD
£3,979 GBP
View
Most Expensive
NZ Jewellers
4c184f8c-0520-45f5-ae51-8c3e19c07747 · Sep 30
$8,949 AUD
$6,286 USD
View
Price last confirmed 32 days ago
14 more retailers have this diamond
Prices start from $3,965 AUDSave up to $3,229 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
$3,965 AUD