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Heart|Natural|GIA

0.81ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6541804776

Certificate GIA 6541804776

Diamond specifications and retailer prices

From $1,428 SGD
$1,117 USD
As of November 2, 2026
Save $1,522 SGD (52%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,564 SGD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 0.81ct natural heart diamond

This 0.81ct natural heart sits in the just-under-one-carat band, graded D 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 6541804776. Listed at 18 retailers as of October 29, 2026, with a 107% 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

0.81
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.79°
Pavilion angle42.33°
OriginNatural
Grading LabGIA
CertificateGIA 6541804776
Dimensions5.76 × 6.31 × 3.87 mm
L/W Ratio1.10
Top View
5.76 mm6.31 mm0.81 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541804776
Side View
Table 57.0%Crown 36.79°Girdle: Slightly ThickPavilion 42.33°Culet: NoneDepth 61.3%

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 2
Current: $1,766 SGD|Low: $1,038 SGD|High: $2,950 SGD|Avg: $1,816 SGD|+10.5%
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 12$1,428 SGD
Retailer 3$1,450 SGD
Retailer 5$1,461 SGD
Retailer 9$1,483 SGD
Retailer 8$1,645 SGD
Retailer 7$1,707 SGD
Retailer 6$1,720 SGD
Retailer 1$1,766 SGD
Retailer 2$1,872 SGD
Retailer 4$1,911 SGD
Retailer 10$2,162 SGD
Retailer 11$2,289 SGD
Retailer 13$2,950 SGD

41 data points across 13 retailers

18 retailers$1,428 SGD to $2,950 SGD

A
Cheapest Retailer
-
$1,428 SGD
$1,117 USD
Final sale: no returns
A
Retailer 2
-
$1,450 SGD
$1,134 USD
View
Retailer 3
-
$1,461 SGD
$1,143 USD
View
Price last confirmed 31 days ago
Retailer 4
-
$1,461 SGD
$1,143 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
$1,483 SGD
$1,160 USD
View
Retailer 6
-
$1,517 SGD
$1,187 USD
View
Price last confirmed 32 days ago
A
Retailer 7
-
$1,645 SGD
$1,287 USD
View
Retailer 8
-
$1,686 SGD
$1,319 USD
View
Price last confirmed 56 days ago
Retailer 9
-
$1,686 SGD
$1,319 USD
View
Price last confirmed 34 days ago
B+
Retailer 10
-
$1,707 SGD
$1,335 USD
View
A
Retailer 11
-
$1,720 SGD
$1,345 USD
View
B+
Retailer 12
-
$1,766 SGD
£1,088 GBP
View
B+
Retailer 13
-
$1,872 SGD
£1,153 GBP
View
Retailer 14
-
$1,911 SGD
A$2,300 AUD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
$2,162 SGD
€1,611 EUR
View
B+
Retailer 16
-
$2,289 SGD
ZAR 28,926 ZAR
View
B
Retailer 17
-
$2,950 SGD
£1,817 GBP
View
Most Expensive
NZ Jewellers
04f28387-8860-40de-bca6-dbb8f13d8be6 · Sep 30
$3,564 SGD
$2,788 USD
View
Price last confirmed 32 days ago
17 more retailers have this diamond
Prices start from $1,428 SGDSave up to $1,522 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
0.81ct Heart
$1,428 SGD