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Heart|Natural|GIA

0.31ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 2557423267

Certificate GIA 2557423267

Diamond specifications and retailer prices

From £211 GBP
₹26,961 INR
As of November 2, 2026
Save £245 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £680 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557423267. Listed at 14 retailers as of October 30, 2026, with a 116% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557423267
Dimensions4.11 × 4.70 × 2.79 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
4.11 mm4.70 mm0.31 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557423267
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.3%

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 2
Current: £680 GBP|Low: £211 GBP|High: £1,127 GBP|Avg: £466 GBP|-1.0%
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 2, 2026
Retailer 2£211 GBP
Retailer 10£294 GBP
Retailer 8£317 GBP
Retailer 9£317 GBP
Retailer 12£339 GBP
Retailer 5£384 GBP
Retailer 7£403 GBP
Retailer 6£456 GBP
Retailer 3£471 GBP
Retailer 4£602 GBP
MOH London£680 GBP
Retailer 11£1,127 GBP

37 data points across 12 retailers

14 retailers£211 GBP to £456 GBP

A
Cheapest Retailer
-
£211 GBP
₹26,961 INR
B+
Retailer 2
-
£278 GBP
$373 USD
View
B+
Retailer 3
-
£294 GBP
$395 USD
View
B+
Retailer 4
-
£317 GBP
$425 USD
View
B+
Retailer 5
-
£317 GBP
$425 USD
View
B
Retailer 6
-
£339 GBP
$455 USD
View
B
Retailer 7
-
£384 GBP
View
B
Retailer 8
-
£396 GBP
$532 USD
View
B
Retailer 9
-
£403 GBP
View
B
Retailer 10
-
£456 GBP
ZAR 9,884 ZAR
View
Retailer 11
-
£471 GBP
A$972 AUD
View
Price last confirmed 29 days ago
Retailer 12
-
£602 GBP
View
Price last confirmed 33 days ago
Most Expensive
MOH London
BDFA9C17F · Nov 2
£680 GBP
View
Price under review
12 more retailers have this diamond
Prices start from £211 GBPSave up to £245 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
0.31ct Heart
£211 GBP