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Heart|Natural|GIA

0.91ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6542515348

Certificate GIA 6542515348

Diamond specifications and retailer prices

From $1,057 AUD
HK$5,800 HKD
As of November 1, 2026
Save $1,561 AUD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,171 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.91ct natural heart diamond

This 0.91ct natural heart 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 6542515348. Listed at 14 retailers as of November 1, 2026, with a 148% 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
SymmetryVery Good
FluorescenceFaint
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6542515348
Dimensions5.75 × 6.76 × 4.02 mm
L/W Ratio1.18
Top View
5.75 mm6.76 mm0.91 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542515348
Side View
Table 56.0%CrownGirdle: MED-THKPavilion 41.6°Culet: NoneDepth 59.5%

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: $1,477 AUD|Low: $1,057 AUD|High: $2,965 AUD|Avg: $1,782 AUD|-21.7%
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
November 2, 2026
Retailer 6$1,057 AUD
Retailer 10$1,318 AUD
Retailer 8$1,395 AUD
Retailer 9$1,452 AUD
Retailer 13$1,472 AUD
Retailer 1$1,477 AUD
Retailer 3$1,523 AUD
Retailer 12$1,687 AUD
Retailer 4$1,910 AUD
Retailer 5$2,062 AUD
Retailer 11$2,172 AUD
Retailer 2$2,309 AUD
Retailer 7$2,618 AUD

29 data points across 13 retailers

14 retailers$1,057 AUD to $2,618 AUD

A
Cheapest Retailer
-
$1,057 AUD
HK$5,800 HKD
A
Retailer 2
-
$1,318 AUD
$926 USD
View
Final sale: no returns
A
Retailer 3
-
$1,395 AUD
€933 EUR
View
A
Retailer 4
-
$1,452 AUD
$1,020 USD
View
A
Retailer 5
-
$1,472 AUD
$1,034 USD
View
A
Retailer 6
-
$1,477 AUD
£817 GBP
View
Retailer 7
-
$1,523 AUD
SGD 1,446 SGD
View
Price last confirmed 10 days ago
A
Retailer 8
-
$1,687 AUD
$1,185 USD
View
B+
Retailer 9
-
$1,910 AUD
SGD 1,813 SGD
View
Retailer 10
-
$2,062 AUD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
$2,172 AUD
ZAR 24,649 ZAR
View
Retailer 12
-
$2,309 AUD
$1,622 USD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$2,618 AUD
£1,448 GBP
View
Most Expensive
NZ Jewellers
ec790a67-022d-42e3-b421-5e889851c541 · Sep 25
$4,171 AUD
$2,930 USD
View
Price last confirmed 38 days ago
13 more retailers have this diamond
Prices start from $1,057 AUDSave up to $1,561 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
$1,057 AUD