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Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

VG • I/SI1 • GIA 1545779961

Certificate GIA 1545779961

Diamond specifications and retailer prices

From £1,628 GBP
As of November 6, 2026
Save £2,941 GBP (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,569 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1545779961. Listed at 17 retailers as of November 5, 2026, with prices from £1,628 to £4,569, a £2,941 spread on the same certified stone. NZ Jewellers lists it at £4,569. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545779961
Dimensions6.34 × 7.19 × 4.40 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.34 mm7.19 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545779961
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,569 GBP|Low: £1,628 GBP|High: £4,569 GBP|Avg: £2,397 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
November 6, 2026
Retailer 6£1,628 GBP
Retailer 4£1,711 GBP
Retailer 13£1,980 GBP
Retailer 15£1,980 GBP
Retailer 14£2,056 GBP
Retailer 5£2,084 GBP
Retailer 2£2,120 GBP
Retailer 3£2,148 GBP
Retailer 8£2,264 GBP
Retailer 9£2,264 GBP
Retailer 16£2,284 GBP
Retailer 7£2,338 GBP
Retailer 17£2,481 GBP
Retailer 10£2,544 GBP
Retailer 11£2,667 GBP
Retailer 12£3,644 GBP
NZ Jewellers£4,569 GBP

37 data points across 17 retailers

17 retailers£1,628 GBP to £4,569 GBP

B+
Cheapest Retailer
-
£1,628 GBP
B+
Retailer 2
-
£1,711 GBP
View
B
Retailer 3
-
£1,980 GBP
View
Retailer 4
-
£1,980 GBP
View
Price last confirmed 9 days ago
B
Retailer 5
-
£2,056 GBP
View
B
Retailer 6
-
£2,084 GBP
View
B
Retailer 7
-
£2,120 GBP
View
B
Retailer 8
-
£2,148 GBP
View
B
Retailer 9
-
£2,264 GBP
View
B
Retailer 10
-
£2,264 GBP
View
B
Retailer 11
-
£2,284 GBP
View
B
Retailer 12
-
£2,338 GBP
View
B
Retailer 13
-
£2,481 GBP
View
B
Retailer 14
-
£2,544 GBP
View
B
Retailer 15
-
£2,667 GBP
View
B
Retailer 16
-
£3,644 GBP
View
Most Expensive
C
NZ Jewellers
68941107-28b9-4f84-864d-21a79f812332 · Nov 5
£4,569 GBP
$6,115 USD
View
16 more retailers have this diamond
Prices start from £1,628 GBPSave up to £2,941 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.

B+
1.20ct Heart
£1,628 GBP