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Heart|Natural|GIA

1.20ct K SI2 Heart Natural Diamond

VG • K/SI2 • GIA 1313069156

Certificate GIA 1313069156

Diamond specifications and retailer prices

From £1,100 GBP
As of November 6, 2026
Save £1,491 GBP (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,590 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1313069156. Listed at 11 retailers as of November 4, 2026, with prices from £1,100 to £2,590, a £1,491 spread on the same certified stone. MOH London lists it at £2,590. 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
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1313069156
Dimensions5.74 × 5.69 × 4.06 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
5.74 mm5.69 mm1.20 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1313069156
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.3%

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: £2,590 GBP|Low: £1,090 GBP|High: £2,624 GBP|Avg: £1,638 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8£1,100 GBP
Retailer 10£1,430 GBP
Retailer 9£1,482 GBP
Retailer 2£1,516 GBP
Retailer 6£1,528 GBP
Retailer 12£1,535 GBP
Retailer 3£1,547 GBP
Retailer 11£1,585 GBP
Retailer 7£1,609 GBP
Retailer 4£1,786 GBP
Retailer 5£2,013 GBP
MOH London£2,590 GBP

31 data points across 12 retailers

11 retailers£1,100 GBP to £2,590 GBP

B+
Cheapest Retailer
-
£1,100 GBP
B+
Retailer 2
-
£1,339 GBP
View
B+
Retailer 3
-
£1,430 GBP
View
Retailer 4
-
£1,482 GBP
View
Price last confirmed 29 days ago
B+
Retailer 5
-
£1,516 GBP
View
B
Retailer 6
-
£1,528 GBP
View
B
Retailer 7
-
£1,547 GBP
View
B
Retailer 8
-
£1,585 GBP
View
B
Retailer 9
-
£1,609 GBP
View
B
Retailer 10
-
£2,013 GBP
View
Most Expensive
B
MOH London
ED669A54F · Nov 4
£2,590 GBP
View
10 more retailers have this diamond
Prices start from £1,100 GBPSave up to £1,491 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
£1,100 GBP