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Round|Natural|IGI

0.31ct H IF Round Natural Diamond

EX • H/IF • IGI 455020495

Shape and cutting style on the report: Round brilliant

Certificate IGI 455020495

Diamond specifications and retailer prices

From £264 GBP
$354 USD
As of October 29, 2026
Save £319 GBP (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £941 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 0.31ct natural round diamond

This 0.31ct natural round sits in the sub-half-carat band, graded H colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 455020495. Listed at 16 retailers as of October 29, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.31
Carat
H
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 455020495
Dimensions4.29 × 4.31 × 2.69 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
4.29 mm4.31 mm0.31 ctH / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 455020495
Side View
Table 57.5%Crown 35.8°Girdle: UNDPavilion 41.1°Culet: NoneDepth 62.6%

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: Oct 29
Current: £327 GBP|Low: £202 GBP|High: £574 GBP|Avg: £399 GBP|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8£202 GBP
Retailer 7£260 GBP
Retailer 1£327 GBP
Retailer 3£381 GBP
Retailer 4£458 GBP
Retailer 2£474 GBP
Retailer 6£546 GBP
Retailer 5£570 GBP

30 data points across 8 retailers

16 retailers£264 GBP to £583 GBP

Retailer 1
-
£202 GBP
$270 USD
Price last confirmed 53 days ago
Retailer 2
-
£246 GBP
$329 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
£264 GBP
$354 USD
View
Retailer 4
-
£264 GBP
$354 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
£274 GBP
$367 USD
View
Retailer 6
-
£274 GBP
$367 USD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
£327 GBP
View
Retailer 8
-
£331 GBP
$443 USD
View
Price last confirmed 14 days ago
B+
Retailer 9
-
£343 GBP
$460 USD
View
B+
Retailer 10
-
£381 GBP
ZAR 8,241 ZAR
View
B+
Retailer 11
-
£458 GBP
€585 EUR
View
B+
Retailer 12
-
£474 GBP
View
B
Retailer 13
-
£546 GBP
View
B
Retailer 14
-
£570 GBP
View
B
Retailer 15
-
£583 GBP
View
Most Expensive
NZ Jewellers
daad4f11-b98a-480c-8470-2637c3fa6645 · Oct 17
£941 GBP
$1,261 USD
View
Price last confirmed 15 days ago
15 more retailers have this diamond
Prices start from £264 GBPSave up to £319 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 Round
£264 GBP