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Heart|Natural|IGI

1.20ct I SI2 Heart Natural Diamond

GD • I/SI2 • IGI 175557369

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 175557369

Diamond specifications and retailer prices

From £1,220 GBP
As of November 6, 2026
Save £423 GBP (26%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,643 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 standard cut grade and certified by IGI 175557369. Listed at 5 retailers as of November 6, 2026, with prices from £1,220 to £1,643, a £423 spread on the same certified stone. Reve Diamonds lists it at £1,643. 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
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceFaint
Crown angle44.2°
Pavilion angle38.5°
OriginNatural
Grading LabIGI
CertificateIGI 175557369
Dimensions6.27 × 5.77 × 4.15 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizePointed
Top View
6.27 mm5.77 mm1.20 ctI / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceFaint
CertificateIGI 175557369
Side View
Table 63.0%Crown 44.2°Girdle: MED-VTKPavilion 38.5°Culet: NoneDepth 71.9%

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: £1,476 GBP|Low: £1,220 GBP|High: £1,919 GBP|Avg: £1,582 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Reve Diamonds
October 19, 2026
Retailer 5£1,220 GBP
Retailer 3£1,446 GBP
Retailer 1£1,476 GBP
Retailer 2£1,600 GBP
Reve Diamonds£1,643 GBP
Retailer 4£1,919 GBP

6 data points across 6 retailers

5 retailers£1,220 GBP to £1,643 GBP

B+
Cheapest Retailer
-
£1,220 GBP
B+
Retailer 2
-
£1,446 GBP
View
B+
Retailer 3
-
£1,476 GBP
View
Retailer 4
-
£1,600 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Reve Diamonds
523A23C98 · Nov 6
£1,643 GBP
$2,199 USD
View
4 more retailers have this diamond
Prices start from £1,220 GBPSave up to £423 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
£1,220 GBP