CaratHunter
Plans
Heart|Natural|GIA

1.00ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 2406309500

Certificate GIA 2406309500

Diamond specifications and retailer prices

From £717 GBP
As of November 6, 2026
Save £1,051 GBP (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,769 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2406309500. Listed at 9 retailers as of November 2, 2026, with prices from £717 to £1,769, a £1,051 spread on the same certified stone. MOH London lists it at £1,769. 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

1.00
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2406309500
Dimensions5.27 × 5.14 × 3.91 mm
L/W Ratio1.03
Top View
5.27 mm5.14 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2406309500
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 76.1%

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: £1,769 GBP|Low: £708 GBP|High: £1,788 GBP|Avg: £1,097 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£717 GBP
Retailer 10£912 GBP
Retailer 2£988 GBP
Retailer 4£997 GBP
Retailer 7£1,001 GBP
Retailer 9£1,051 GBP
Retailer 8£1,066 GBP
Retailer 5£1,085 GBP
Retailer 3£1,340 GBP
MOH London£1,769 GBP

31 data points across 10 retailers

9 retailers£717 GBP to £1,769 GBP

A
Cheapest Retailer
-
£717 GBP
B+
Retailer 2
-
£895 GBP
View
B+
Retailer 3
-
£988 GBP
View
B+
Retailer 4
-
£997 GBP
View
B+
Retailer 5
-
£1,001 GBP
View
B+
Retailer 6
-
£1,066 GBP
View
B+
Retailer 7
-
£1,085 GBP
View
B+
Retailer 8
-
£1,340 GBP
View
Most Expensive
B
MOH London
782D7060E · Nov 2
£1,769 GBP
View
8 more retailers have this diamond
Prices start from £717 GBPSave up to £1,051 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
1.00ct Heart
£717 GBP