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Heart|Natural|GIA

0.31ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6562745373

Certificate GIA 6562745373

Diamond specifications and retailer prices

From £287 GBP
As of November 2, 2026
Save £231 GBP (45%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £518 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.31ct natural heart diamond

This 0.31ct natural heart sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562745373. Listed at 4 retailers as of November 2, 2026, with prices from £287 to £518, a £231 spread on the same certified stone. MOH London lists it at £518. 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

0.31
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6562745373
Dimensions3.99 × 4.63 × 2.79 mm
L/W Ratio1.16
Key to symbols
Feather
Top View
3.99 mm4.63 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6562745373
Side View
Table 63.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 60.3%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £518 GBP|Low: £285 GBP|High: £518 GBP|Avg: £344 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2£287 GBP
Retailer 4£330 GBP
Retailer 3£349 GBP
MOH London£518 GBP

5 data points across 4 retailers

4 retailers£287 GBP to £518 GBP

B+
Cheapest Retailer
-
£287 GBP
B
Retailer 2
-
£330 GBP
$442 USD
View
B
Retailer 3
-
£349 GBP
$468 USD
View
Most Expensive
B
MOH London
C89490FA3 · Nov 2
£518 GBP
View
3 more retailers have this diamond
Prices start from £287 GBPSave up to £231 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+
0.31ct Heart
£287 GBP