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Heart|Natural|GIA

0.91ct I SI2 Heart Natural Diamond

ID • I/SI2 • GIA 2556551345

Certificate GIA 2556551345

Diamond specifications and retailer prices

From $1,361 AUD
$956 USD
As of November 1, 2026
Save $2,970 AUD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,331 AUD at Moon Ocean · As of November 2, 2026
View at Moon Ocean

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-carat band, graded I 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 2556551345. Listed at 15 retailers as of November 1, 2026, with prices from $1,361 to $4,331, a $2,970 spread on the same certified stone. Moon Ocean lists it at $4,331. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556551345
Dimensions6.63 × 5.61 × 3.97 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
6.63 mm5.61 mm0.91 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556551345
Side View
Table 61.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 60.0%

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: Nov 1
Current: $4,331 AUD|Low: $1,227 AUD|High: $4,357 AUD|Avg: $2,125 AUD|-0.4%
Moon Ocean
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 11$1,361 AUD
Retailer 7$1,395 AUD
Retailer 6$1,397 AUD
Retailer 14$1,516 AUD
Retailer 16$1,516 AUD
Retailer 15$1,575 AUD
Retailer 8$1,687 AUD
Retailer 17$1,711 AUD
Retailer 12$1,750 AUD
Retailer 3$1,836 AUD
Retailer 4$1,836 AUD
Retailer 5$1,893 AUD
Retailer 9$2,231 AUD
Retailer 2$2,341 AUD
Retailer 10$3,066 AUD
Retailer 13$4,083 AUD
Moon Ocean$4,331 AUD

30 data points across 17 retailers

15 retailers$1,361 AUD to $4,331 AUD

A
Cheapest Retailer
-
$1,361 AUD
$956 USD
A
Retailer 2
-
$1,395 AUD
$980 USD
View
A
Retailer 3
-
$1,397 AUD
$981 USD
View
A
Retailer 4
-
$1,516 AUD
$1,065 USD
View
A
Retailer 5
-
$1,516 AUD
$1,065 USD
View
A
Retailer 6
-
$1,575 AUD
$1,106 USD
View
A
Retailer 7
-
$1,711 AUD
$1,202 USD
View
B+
Retailer 8
-
$1,750 AUD
$1,229 USD
View
B+
Retailer 9
-
$1,836 AUD
$1,290 USD
View
B+
Retailer 10
-
$1,836 AUD
$1,290 USD
View
B+
Retailer 11
-
$1,893 AUD
$1,330 USD
View
B+
Retailer 12
-
$2,341 AUD
€1,566 EUR
View
B
Retailer 13
-
$3,066 AUD
£1,696 GBP
View
B
Retailer 14
-
$4,083 AUD
$2,868 USD
View
Most Expensive
B
Moon Ocean
NVN-D9DE9C83B-345 · Nov 2
$4,331 AUD
£2,396 GBP
View
14 more retailers have this diamond
Prices start from $1,361 AUDSave up to $2,970 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
0.91ct Heart
$1,361 AUD