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Heart|Natural|GIA

0.91ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 3525247509

Certificate GIA 3525247509

Diamond specifications and retailer prices

From $1,408 AUD
$987 USD
As of November 1, 2026
Save $1,628 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,850 AUD at NZ Jewellers · As of September 30, 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 3525247509. Listed at 15 retailers as of November 1, 2026, with a 116% 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 angle38.85°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 3525247509
Dimensions5.86 × 6.62 × 3.94 mm
L/W Ratio1.13
Top View
5.86 mm6.62 mm0.91 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3525247509
Side View
Table 59.0%Crown 38.85°Girdle: THK-VTKPavilion 40.2°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: $2,890 AUD|Low: $1,334 AUD|High: $3,079 AUD|Avg: $2,025 AUD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9$1,408 AUD
Retailer 7$1,455 AUD
Retailer 2$1,511 AUD
Retailer 10$1,769 AUD
Retailer 4$1,799 AUD
Retailer 6$1,844 AUD
Retailer 8$2,063 AUD
Retailer 5$2,311 AUD
Retailer 1$2,890 AUD
Retailer 3$3,037 AUD

40 data points across 10 retailers

15 retailers$1,408 AUD to $3,037 AUD

A
Cheapest Retailer
-
$1,408 AUD
$987 USD
A
Retailer 2
-
$1,455 AUD
$1,020 USD
View
Final sale: no returns
A
Retailer 3
-
$1,511 AUD
$1,059 USD
View
Retailer 4
-
$1,578 AUD
$1,106 USD
View
Price last confirmed 25 days ago
Retailer 5
-
$1,578 AUD
$1,106 USD
View
Price last confirmed 25 days ago
Retailer 6
-
$1,638 AUD
$1,148 USD
View
Price last confirmed 32 days ago
A
Retailer 7
-
$1,769 AUD
$1,240 USD
View
B+
Retailer 8
-
$1,799 AUD
£993 GBP
View
Retailer 9
-
$1,821 AUD
$1,276 USD
View
Price last confirmed 24 days ago
A
Retailer 10
-
$1,844 AUD
£1,017 GBP
View
Retailer 11
-
$2,063 AUD
View
Price last confirmed 29 days ago
B+
Retailer 12
-
$2,311 AUD
ZAR 26,170 ZAR
View
B+
Retailer 13
-
$2,890 AUD
£1,595 GBP
View
B
Retailer 14
-
$3,037 AUD
£1,676 GBP
View
Most Expensive
NZ Jewellers
fa4126a9-76d9-432e-a56c-fa71ffe002c4 · Sep 30
$3,850 AUD
$2,698 USD
View
Price last confirmed 33 days ago
14 more retailers have this diamond
Prices start from $1,408 AUDSave up to $1,628 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
$1,408 AUD