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Heart|Natural|GIA

1.01ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6545398875

Certificate GIA 6545398875

Diamond specifications and retailer prices

From £1,165 GBP
HK$12,200 HKD
As of November 1, 2026
Save £1,577 GBP (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,476 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.01ct natural heart diamond

This 1.01ct natural heart sits in the classic 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 6545398875. Listed at 19 retailers as of October 29, 2026, with a 135% 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

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle37.4°
OriginNatural
Grading LabGIA
CertificateGIA 6545398875
Dimensions5.94 × 6.90 × 4.16 mm
L/W Ratio1.16
Top View
5.94 mm6.90 mm1.01 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545398875
Side View
Table 56.0%CrownGirdle: STK-VTKPavilion 37.4°Culet: NoneDepth 60.3%

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: £1,279 GBP|Low: £1,165 GBP|High: £2,846 GBP|Avg: £1,682 GBP|-4.9%
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
Retailer 15
Retailer 16
November 2, 2026
Retailer 12£1,165 GBP
Retailer 1£1,279 GBP
Retailer 10£1,308 GBP
Retailer 15£1,343 GBP
Retailer 3£1,352 GBP
Retailer 13£1,377 GBP
Retailer 11£1,433 GBP
Retailer 5£1,437 GBP
Retailer 4£1,534 GBP
Retailer 9£1,679 GBP
Retailer 16£1,706 GBP
Retailer 7£1,715 GBP
Retailer 14£1,913 GBP
Retailer 8£1,979 GBP
Retailer 6£2,498 GBP
Retailer 2£2,742 GBP

27 data points across 16 retailers

19 retailers£1,165 GBP to £2,742 GBP

A
Cheapest Retailer
-
£1,165 GBP
HK$12,200 HKD
A
Retailer 2
-
£1,279 GBP
$1,714 USD
View
Final sale: no returns
A
Retailer 3
-
£1,308 GBP
$1,753 USD
View
A
Retailer 4
-
£1,343 GBP
$1,800 USD
View
A
Retailer 5
-
£1,352 GBP
$1,812 USD
View
A
Retailer 6
-
£1,377 GBP
€1,758 EUR
View
A
Retailer 7
-
£1,433 GBP
$1,920 USD
View
A
Retailer 8
-
£1,437 GBP
$1,925 USD
View
A
Retailer 9
-
£1,534 GBP
$2,055 USD
View
A
Retailer 10
-
£1,679 GBP
View
B+
Retailer 11
-
£1,706 GBP
$2,286 USD
View
Retailer 12
-
£1,706 GBP
$2,286 USD
View
Price last confirmed 11 days ago
Retailer 13
-
£1,708 GBP
$2,288 USD
View
Price last confirmed 39 days ago
A
Retailer 14
-
£1,715 GBP
SGD 3,105 SGD
View
B+
Retailer 15
-
£1,913 GBP
ZAR 41,414 ZAR
View
Retailer 16
-
£1,979 GBP
A$4,080 AUD
View
Price last confirmed 26 days ago
Retailer 17
-
£2,498 GBP
$3,347 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
£2,742 GBP
View
Most Expensive
NZ Jewellers
da600e29-a316-440f-895c-530c3a04527f · Sep 25
£3,476 GBP
$4,657 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from £1,165 GBPSave up to £1,577 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
1.01ct Heart
£1,165 GBP