Heart|Natural|GIA

1.02ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 1549111100

Certificate GIA 1549111100

Diamond specifications and retailer prices

From £1,118 GBP
HK$11,700 HKD
As of October 30, 2026
Save £1,510 GBP (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,343 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.02ct natural heart diamond

This 1.02ct 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 1549111100. Listed at 17 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

1.02
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle43.6°
OriginNatural
Grading LabGIA
CertificateGIA 1549111100
Dimensions6.02 × 6.71 × 4.29 mm
L/W Ratio1.11
Girdle conditionFaceted
Top View
6.02 mm6.71 mm1.02 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549111100
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 43.6°Culet: NoneDepth 64.0%

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: Oct 30
Current: £1,483 GBP|Low: £1,114 GBP|High: £2,835 GBP|Avg: £1,586 GBP|-3.9%
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
October 30, 2026
Retailer 15£1,118 GBP
Retailer 3£1,248 GBP
Retailer 13£1,267 GBP
Retailer 9£1,269 GBP
Retailer 12£1,320 GBP
Retailer 8£1,343 GBP
Retailer 14£1,348 GBP
Retailer 6£1,381 GBP
Retailer 4£1,387 GBP
Retailer 10£1,443 GBP
Retailer 1£1,483 GBP
Retailer 11£1,800 GBP
Retailer 7£1,906 GBP
Retailer 2£2,350 GBP
Retailer 5£2,627 GBP

27 data points across 15 retailers

17 retailers£1,118 GBP to £2,627 GBP

A
Cheapest Retailer
-
£1,118 GBP
HK$11,700 HKD
A
Retailer 2
-
£1,248 GBP
$1,672 USD
View
Final sale: no returns
A
Retailer 3
-
£1,267 GBP
$1,697 USD
View
A
Retailer 4
-
£1,269 GBP
$1,700 USD
View
A
Retailer 5
-
£1,320 GBP
$1,768 USD
View
A
Retailer 6
-
£1,343 GBP
€1,713 EUR
View
A
Retailer 7
-
£1,348 GBP
$1,806 USD
View
A
Retailer 8
-
£1,381 GBP
$1,850 USD
View
A
Retailer 9
-
£1,387 GBP
$1,859 USD
View
A
Retailer 10
-
£1,443 GBP
$1,934 USD
View
A
Retailer 11
-
£1,483 GBP
View
B+
Retailer 12
-
£1,755 GBP
A$3,618 AUD
View
Retailer 13
-
£1,800 GBP
ZAR 38,973 ZAR
View
Price last confirmed 10 days ago
Retailer 14
-
£1,906 GBP
A$3,928 AUD
View
Price last confirmed 26 days ago
Retailer 15
-
£2,350 GBP
$3,148 USD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
£2,627 GBP
View
Most Expensive
NZ Jewellers
22ff4afb-d96f-4673-a3a4-2f7cb3bff97e · Sep 25
£3,343 GBP
$4,479 USD
View
Price last confirmed 36 days ago
16 more retailers have this diamond
Prices start from £1,118 GBPSave up to £1,510 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
1.02ct Heart
£1,118 GBP