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Heart|Natural|GIA

0.31ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 2556180939

Certificate GIA 2556180939

Diamond specifications and retailer prices

From £183 GBP
₹23,448 INR
As of November 2, 2026
Save £412 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £595 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 2556180939. Listed at 14 retailers as of November 2, 2026, with prices from £183 to £595, a £412 spread on the same certified stone. MOH London lists it at £595. 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
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2556180939
Dimensions4.19 × 4.69 × 2.69 mm
L/W Ratio1.12
Top View
4.19 mm4.69 mm0.31 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2556180939
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 57.5%

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: £595 GBP|Low: £183 GBP|High: £988 GBP|Avg: £413 GBP|-1.1%
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£183 GBP
Retailer 10£258 GBP
Retailer 9£278 GBP
Retailer 8£288 GBP
Retailer 5£334 GBP
Retailer 12£347 GBP
Retailer 7£353 GBP
Retailer 6£400 GBP
Retailer 3£413 GBP
Retailer 4£528 GBP
MOH London£595 GBP
Retailer 11£988 GBP

37 data points across 12 retailers

14 retailers£183 GBP to £595 GBP

A
Cheapest Retailer
-
£183 GBP
₹23,448 INR
B+
Retailer 2
-
£258 GBP
$346 USD
View
B+
Retailer 3
-
£278 GBP
$373 USD
View
B+
Retailer 4
-
£288 GBP
$386 USD
View
B+
Retailer 5
-
£297 GBP
$399 USD
View
B
Retailer 6
-
£334 GBP
View
B
Retailer 7
-
£347 GBP
$466 USD
View
B+
Retailer 8
-
£353 GBP
View
B
Retailer 9
-
£366 GBP
$491 USD
View
B
Retailer 10
-
£374 GBP
$502 USD
View
B
Retailer 11
-
£400 GBP
ZAR 8,663 ZAR
View
Retailer 12
-
£413 GBP
A$852 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
B9FEF39B6 · Nov 2
£595 GBP
View
12 more retailers have this diamond
Prices start from £183 GBPSave up to £412 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
£183 GBP