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Round|Lab Grown|UNKNOWN

0.31ct E I1 Round Lab Grown Diamond

EX • E/I1 • UNKNOWN 3513071307

Certificate UNKNOWN 3513071307

Diamond specifications and retailer prices

From £98 GBP
$131 USD
As of October 29, 2026
Save £294 GBP (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £392 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 0.31ct lab-grown round diamond

This 0.31ct lab-grown round sits in the sub-half-carat band, graded E colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by UNKNOWN 3513071307. Listed at 5 retailers as of October 27, 2026, with prices from £98 to £392, a £294 spread on the same certified stone. NZ Jewellers lists it at £392. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.31
Carat
E
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 3513071307
Dimensions4.48 × 4.46 × 2.64 mm
L/W Ratio1.00
Top View
4.48 mm4.46 mm0.31 ctE / I1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateUNKNOWN 3513071307
Side View
Table 56.0%CrownGirdlePavilionCuletDepth 59.1%

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: Oct 29
Current: £98 GBP|Low: £95 GBP|High: £231 GBP|Avg: £144 GBP|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1£98 GBP
Retailer 4£114 GBP
Retailer 2£122 GBP
Retailer 3£231 GBP

4 data points across 4 retailers

5 retailers£98 GBP to £392 GBP

A
Cheapest Retailer
-
£98 GBP
$131 USD
B+
Retailer 2
-
£114 GBP
$152 USD
View
B+
Retailer 3
-
£122 GBP
$162 USD
View
B
Retailer 4
-
£231 GBP
$308 USD
View
Most Expensive
C
NZ Jewellers
6d04bb6e-f174-4e34-bc8a-bfb78334d2e7 · Oct 27
£392 GBP
$522 USD
View
4 more retailers have this diamond
Prices start from £98 GBPSave up to £294 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
£98 GBP