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Heart|Natural|GIA

1.20ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1547578076

Certificate GIA 1547578076

Diamond specifications and retailer prices

From £1,568 GBP
As of November 6, 2026
Save £1,827 GBP (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,314 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1547578076. Listed at 13 retailers as of November 4, 2026, with a 116% 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

1.20
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Pavilion angle38.8°
OriginNatural
Grading LabGIA
CertificateGIA 1547578076
Dimensions6.42 × 7.24 × 4.30 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
6.42 mm7.24 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1547578076
Side View
Table 60.0%CrownGirdle: STK-VTKPavilion 38.8°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,780 GBP|Low: £1,539 GBP|High: £3,659 GBP|Avg: £2,138 GBP|-4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£1,568 GBP
Retailer 2£1,624 GBP
Retailer 8£1,718 GBP
Retailer 1£1,780 GBP
Retailer 3£1,839 GBP
Retailer 7£1,848 GBP
Retailer 10£1,957 GBP
Retailer 4£2,056 GBP
Retailer 5£2,158 GBP
Retailer 9£3,192 GBP
Retailer 6£3,395 GBP

37 data points across 11 retailers

13 retailers£1,568 GBP to £3,395 GBP

A
Cheapest Retailer
-
£1,568 GBP
A
Retailer 2
-
£1,624 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,718 GBP
View
A
Retailer 4
-
£1,780 GBP
View
A
Retailer 5
-
£1,839 GBP
View
A
Retailer 6
-
£1,848 GBP
View
B+
Retailer 7
-
£1,957 GBP
View
B+
Retailer 8
-
£2,056 GBP
View
B+
Retailer 9
-
£2,158 GBP
View
B+
Retailer 10
-
£2,271 GBP
View
B
Retailer 11
-
£3,192 GBP
View
B
Retailer 12
-
£3,395 GBP
View
Most Expensive
NZ Jewellers
9f84c160-87e4-4933-8a65-66a4d62850b2 · Sep 25
£4,314 GBP
$5,774 USD
View
Price last confirmed 42 days ago
12 more retailers have this diamond
Prices start from £1,568 GBPSave up to £1,827 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
1.20ct Heart
£1,568 GBP