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Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 7542688363

Certificate GIA 7542688363

Diamond specifications and retailer prices

From $1,228 SGD
HK$7,500 HKD
As of November 1, 2026
Save $1,818 SGD (60%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,544 SGD 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7542688363. Listed at 16 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle42.5°
OriginNatural
Grading LabGIA
CertificateGIA 7542688363
Dimensions5.68 × 6.63 × 4.18 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
5.68 mm6.63 mm0.91 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7542688363
Side View
Table 59.0%CrownGirdle: THN-THKPavilion 42.5°Culet: NoneDepth 63.0%

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: $1,670 SGD|Low: $1,228 SGD|High: $3,206 SGD|Avg: $1,966 SGD|-17.3%
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 3, 2026
Retailer 7$1,228 SGD
Retailer 11$1,535 SGD
Retailer 9$1,570 SGD
Retailer 6$1,657 SGD
Retailer 1$1,670 SGD
Retailer 2$1,687 SGD
Retailer 10$1,701 SGD
Retailer 13$1,714 SGD
Retailer 4$1,759 SGD
Retailer 5$2,309 SGD
Retailer 12$2,514 SGD
Retailer 3$2,650 SGD
Retailer 8$3,045 SGD

29 data points across 13 retailers

16 retailers$1,228 SGD to $3,045 SGD

A
Cheapest Retailer
-
$1,228 SGD
HK$7,500 HKD
A
Retailer 2
-
$1,535 SGD
$1,200 USD
View
Final sale: no returns
A
Retailer 3
-
$1,570 SGD
€1,169 EUR
View
A
Retailer 4
-
$1,657 SGD
$1,296 USD
View
A
Retailer 5
-
$1,670 SGD
£1,028 GBP
View
A
Retailer 6
-
$1,687 SGD
$1,319 USD
View
A
Retailer 7
-
$1,701 SGD
$1,330 USD
View
A
Retailer 8
-
$1,714 SGD
$1,340 USD
View
Retailer 9
-
$1,759 SGD
View
Price last confirmed 11 days ago
Retailer 10
-
$2,246 SGD
£1,383 GBP
View
Price last confirmed 37 days ago
Retailer 11
-
$2,309 SGD
A$2,778 AUD
View
Price last confirmed 28 days ago
B+
Retailer 12
-
$2,351 SGD
A$2,828 AUD
View
B+
Retailer 13
-
$2,514 SGD
ZAR 31,754 ZAR
View
Retailer 14
-
$2,650 SGD
$2,072 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
$3,045 SGD
£1,875 GBP
View
Most Expensive
NZ Jewellers
81e1e335-e678-4bf7-a348-f7949c2b4e6a · Sep 25
$4,544 SGD
$3,553 USD
View
Price last confirmed 38 days ago
15 more retailers have this diamond
Prices start from $1,228 SGDSave up to $1,818 SGD

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
$1,228 SGD