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Heart|Natural|GIA

0.81ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6552621350

Certificate GIA 6552621350

Diamond specifications and retailer prices

From £732 GBP
$973 USD
As of October 22, 2026
Save £302 GBP (29%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,039 GBP 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 6552621350. Listed at 20 retailers as of October 22, 2026, with a 41% 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552621350
Dimensions5.67 × 6.44 × 3.79 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
5.67 mm6.44 mm0.81 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552621350
Side View
Table 61.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 58.8%

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: Oct 22
Current: £911 GBP|Low: £593 GBP|High: £1,547 GBP|Avg: £914 GBP|-1.1%
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
Retailer 14
October 23, 2026
Retailer 8£628 GBP
Retailer 13£719 GBP
Retailer 11£732 GBP
Retailer 14£738 GBP
Retailer 4£771 GBP
Retailer 7£811 GBP
Retailer 12£878 GBP
Retailer 1£911 GBP
Retailer 5£937 GBP
Retailer 3£1,034 GBP
Retailer 9£1,054 GBP
Retailer 6£1,093 GBP
Retailer 10£1,223 GBP
Retailer 2£1,540 GBP

23 data points across 14 retailers

20 retailers£732 GBP to £1,034 GBP

A
Retailer 1
-
£628 GBP
₹79,414 INR
Price last confirmed 7 days ago
A
Retailer 2
-
£719 GBP
$955 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
£732 GBP
$973 USD
View
A
Retailer 4
-
£738 GBP
$980 USD
View
A
Retailer 5
-
£811 GBP
$1,077 USD
View
A
Retailer 6
-
£836 GBP
$1,111 USD
View
Price last confirmed 21 days ago
A
Retailer 7
-
£836 GBP
$1,111 USD
View
Price last confirmed 21 days ago
A
Retailer 8
-
£868 GBP
$1,154 USD
View
Price last confirmed 28 days ago
A
Retailer 9
-
£878 GBP
$1,167 USD
View
A
Retailer 10
-
£911 GBP
View
A
Retailer 11
-
£937 GBP
$1,245 USD
View
Price last confirmed 6 days ago
A
Retailer 12
-
£937 GBP
$1,245 USD
View
Price last confirmed 11 days ago
A
Retailer 13
-
£965 GBP
$1,282 USD
View
Price last confirmed 20 days ago
A
Retailer 14
-
£1,007 GBP
A$2,058 AUD
View
B+
Retailer 15
-
£1,034 GBP
View
A
Retailer 16
-
£1,054 GBP
View
Price last confirmed 7 days ago
B+
Retailer 17
-
£1,093 GBP
A$2,235 AUD
View
Price last confirmed 25 days ago
B+
Retailer 18
-
£1,223 GBP
ZAR 26,245 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 19
-
£1,540 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
c68e4afe-76cb-40f4-8c64-a0742ea2593c · Sep 30
£2,039 GBP
$2,710 USD
View
Price last confirmed 28 days ago
19 more retailers have this diamond
Prices start from £732 GBPSave up to £302 GBP

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
£732 GBP