Heart|Natural|GIA

0.91ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6542515348

Certificate GIA 6542515348

Diamond specifications and retailer prices

From $742 USD
HK$5,800 HKD
As of November 1, 2026
Save $1,097 USD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,930 USD 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,037 USD|Low: $742 USD|High: $2,083 USD|Avg: $1,251 USD|-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$742 USD
Retailer 10$926 USD
Retailer 8$980 USD
Retailer 9$1,020 USD
Retailer 13$1,034 USD
Retailer 1$1,037 USD
Retailer 3$1,070 USD
Retailer 12$1,185 USD
Retailer 4$1,342 USD
Retailer 5$1,448 USD
Retailer 11$1,526 USD
Retailer 2$1,622 USD
Retailer 7$1,839 USD

29 data points across 13 retailers

14 retailers$742 USD to $1,839 USD

A
Cheapest Retailer
-
$742 USD
HK$5,800 HKD
A
Retailer 2
-
$926 USD
View
Final sale: no returns
A
Retailer 3
-
$980 USD
€933 EUR
View
A
Retailer 4
-
$1,020 USD
View
A
Retailer 5
-
$1,034 USD
View
A
Retailer 6
-
$1,037 USD
£817 GBP
View
Retailer 7
-
$1,070 USD
SGD 1,446 SGD
View
Price last confirmed 10 days ago
A
Retailer 8
-
$1,185 USD
View
B+
Retailer 9
-
$1,342 USD
SGD 1,813 SGD
View
Retailer 10
-
$1,448 USD
A$2,228 AUD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
$1,526 USD
ZAR 24,649 ZAR
View
Retailer 12
-
$1,622 USD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
$1,839 USD
£1,448 GBP
View
Most Expensive
NZ Jewellers
ec790a67-022d-42e3-b421-5e889851c541 · Sep 25
$2,930 USD
View
Price last confirmed 38 days ago
13 more retailers have this diamond
Prices start from $742 USDSave up to $1,097 USD

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
$742 USD