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Heart|Natural|GIA

1.02ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 2378237146

Certificate GIA 2378237146

Diamond specifications and retailer prices

From £1,004 GBP
As of November 6, 2026
Save £1,020 GBP (50%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,024 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.02ct natural heart diamond

This 1.02ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2378237146. Listed at 9 retailers as of November 2, 2026, with prices from £1,004 to £2,024, a £1,020 spread on the same certified stone. MOH London lists it at £2,024. 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

1.02
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2378237146
Dimensions5.99 × 4.98 × 3.83 mm
L/W Ratio1.20
Top View
5.99 mm4.98 mm1.02 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2378237146
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 77.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,024 GBP|Low: £994 GBP|High: £2,046 GBP|Avg: £1,344 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£1,004 GBP
Retailer 7£1,072 GBP
Retailer 2£1,120 GBP
Retailer 5£1,276 GBP
Retailer 8£1,322 GBP
Retailer 4£1,409 GBP
Retailer 3£1,567 GBP
MOH London£2,024 GBP

30 data points across 8 retailers

9 retailers£1,004 GBP to £2,024 GBP

A
Cheapest Retailer
-
£1,004 GBP
B+
Retailer 2
-
£1,071 GBP
View
A
Retailer 3
-
£1,072 GBP
View
B+
Retailer 4
-
£1,120 GBP
View
B+
Retailer 5
-
£1,276 GBP
View
B+
Retailer 6
-
£1,322 GBP
View
B+
Retailer 7
-
£1,409 GBP
View
B
Retailer 8
-
£1,567 GBP
View
Most Expensive
B
MOH London
3B29FA4F8 · Nov 2
£2,024 GBP
View
8 more retailers have this diamond
Prices start from £1,004 GBPSave up to £1,020 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
1.02ct Heart
£1,004 GBP