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Heart|Natural|GIA

0.91ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6551162504

Certificate GIA 6551162504

Diamond specifications and retailer prices

From $1,137 AUD
$799 USD
As of October 31, 2026
Save $150 AUD (12%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,288 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 6551162504. Listed at 5 retailers as of October 31, 2026, with a relatively tight 13% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551162504
Dimensions5.98 × 6.73 × 3.97 mm
L/W Ratio1.13
Top View
5.98 mm6.73 mm0.91 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551162504
Side View
Table 55.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 58.9%

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: $1,288 AUD|Low: $1,041 AUD|High: $1,466 AUD|Avg: $1,257 AUD|-7.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4$1,137 AUD
Retailer 5$1,144 AUD
Retailer 2$1,241 AUD
Retailer 3$1,276 AUD
77 Diamonds$1,288 AUD

39 data points across 5 retailers

5 retailers$1,137 AUD to $1,288 AUD

A
Cheapest Retailer
-
$1,137 AUD
$799 USD
Final sale: no returns
A
Retailer 2
-
$1,144 AUD
MYR 3,274 MYR
View
A
Retailer 3
-
$1,241 AUD
$872 USD
View
A
Retailer 4
-
$1,276 AUD
SGD 1,211 SGD
View
Most Expensive
A
77 Diamonds
HSCPRVMEES5S · Nov 1
$1,288 AUD
£712 GBP
View
4 more retailers have this diamond
Prices start from $1,137 AUDSave up to $150 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
$1,137 AUD