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Heart|Natural|GIA

1.20ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 3555316314

Certificate GIA 3555316314

Diamond specifications and retailer prices

From £1,368 GBP
As of November 6, 2026
Save £2,312 GBP (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,680 GBP at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555316314. Listed at 16 retailers as of November 5, 2026, with prices from £1,368 to £3,680, a £2,312 spread on the same certified stone. NZ Jewellers lists it at £3,680. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555316314
Dimensions7.22 × 6.62 × 4.08 mm
L/W Ratio1.09
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Knot
Top View
7.22 mm6.62 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555316314
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 56.5%

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 6
Current: £3,680 GBP|Low: £1,215 GBP|High: £3,680 GBP|Avg: £1,895 GBP|+1.0%
NZ Jewellers
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
Retailer 17
Retailer 18
November 6, 2026
Retailer 17£1,368 GBP
Retailer 7£1,375 GBP
Retailer 6£1,458 GBP
Retailer 13£1,594 GBP
Retailer 15£1,594 GBP
Retailer 8£1,666 GBP
Retailer 14£1,668 GBP
Retailer 10£1,716 GBP
Retailer 2£1,730 GBP
Retailer 9£1,731 GBP
Retailer 3£1,747 GBP
Retailer 16£1,840 GBP
Retailer 4£1,845 GBP
Retailer 18£1,845 GBP
Retailer 5£1,905 GBP
Retailer 11£2,185 GBP
Retailer 12£3,075 GBP
NZ Jewellers£3,680 GBP

34 data points across 18 retailers

16 retailers£1,368 GBP to £3,680 GBP

A
Cheapest Retailer
-
£1,368 GBP
A
Retailer 2
-
£1,375 GBP
View
A
Retailer 3
-
£1,458 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,594 GBP
View
B+
Retailer 5
-
£1,666 GBP
View
B+
Retailer 6
-
£1,668 GBP
View
B+
Retailer 7
-
£1,730 GBP
View
B+
Retailer 8
-
£1,747 GBP
View
Retailer 9
-
£1,822 GBP
View
Price last confirmed 29 days ago
B+
Retailer 10
-
£1,840 GBP
View
B+
Retailer 11
-
£1,845 GBP
View
B+
Retailer 12
-
£1,845 GBP
View
B+
Retailer 13
-
£1,905 GBP
View
B+
Retailer 14
-
£2,185 GBP
View
B
Retailer 15
-
£3,075 GBP
View
Most Expensive
B
NZ Jewellers
41363c63-d7cb-4118-9854-3b008e5c6224 · Nov 5
£3,680 GBP
$4,925 USD
View
15 more retailers have this diamond
Prices start from £1,368 GBPSave up to £2,312 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
£1,368 GBP