CaratHunter
Plans
Marquise|Natural|GIA

0.91ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6545244594

Certificate GIA 6545244594

Diamond specifications and retailer prices

From $3,903 AUD
$2,735 USD
As of November 1, 2026
Save $4,478 AUD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,255 AUD at Moon Ocean · As of November 2, 2026
View at Moon Ocean

About this 0.91ct natural marquise diamond

This 0.91ct natural marquise sits in the just-under-one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545244594. Listed at 17 retailers as of October 30, 2026, with a 115% 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

0.91
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.88°
Pavilion angle41.11°
OriginNatural
Grading LabGIA
CertificateGIA 6545244594
Dimensions9.56 × 5.04 × 3.23 mm
L/W Ratio1.90
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
9.56 mm5.04 mm0.91 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545244594
Side View
Table 59.0%Crown 34.88°Girdle: ThickPavilion 41.11°Culet: NoneDepth 64.0%

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: Nov 1
Current: $9,255 AUD|Low: $3,903 AUD|High: $9,377 AUD|Avg: $5,892 AUD|-1.3%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8$3,903 AUD
Retailer 9$4,092 AUD
Retailer 3$4,358 AUD
Retailer 11$4,525 AUD
Retailer 12$4,941 AUD
Retailer 5$4,985 AUD
Retailer 10$5,138 AUD
Retailer 2$5,630 AUD
Retailer 7$7,095 AUD
Retailer 6$8,044 AUD
Retailer 4$8,380 AUD
Moon Ocean$9,255 AUD

39 data points across 12 retailers

17 retailers$3,903 AUD to $8,380 AUD

B+
Cheapest Retailer
-
$3,903 AUD
$2,735 USD
B
Retailer 2
-
$4,081 AUD
$2,860 USD
View
B
Retailer 3
-
$4,092 AUD
$2,868 USD
View
B
Retailer 4
-
$4,358 AUD
$3,054 USD
View
B
Retailer 5
-
$4,358 AUD
$3,054 USD
View
B
Retailer 6
-
$4,391 AUD
$3,077 USD
View
B
Retailer 7
-
$4,525 AUD
$3,171 USD
View
B
Retailer 8
-
$4,941 AUD
$3,463 USD
View
B
Retailer 9
-
$4,985 AUD
£2,751 GBP
View
B
Retailer 10
-
$5,028 AUD
$3,524 USD
View
Retailer 11
-
$5,138 AUD
View
Price last confirmed 25 days ago
Retailer 12
-
$5,579 AUD
$3,910 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$5,630 AUD
€3,758 EUR
View
B
Retailer 14
-
$7,095 AUD
ZAR 80,325 ZAR
View
B
Retailer 15
-
$8,044 AUD
£4,439 GBP
View
B
Retailer 16
-
$8,380 AUD
$5,873 USD
View
Most Expensive
Moon Ocean
NVN-FB4A5CE10-594 · Nov 2
$9,255 AUD
£5,107 GBP
View
Price under review
16 more retailers have this diamond
Prices start from $3,903 AUDSave up to $4,478 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+
0.91ct Marquise
$3,903 AUD