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Round|Lab Grown|UNKNOWN

0.31ct E I1 Round Lab Grown Diamond

EX • E/I1 • UNKNOWN 35295295

Certificate UNKNOWN 35295295

Diamond specifications and retailer prices

From £105 GBP
$140 USD
As of October 29, 2026
Save £315 GBP (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £421 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 35295295. Listed at 5 retailers as of October 27, 2026, with prices from £105 to £421, a £315 spread on the same certified stone. NZ Jewellers lists it at £421. 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 35295295
Dimensions4.30 × 4.27 × 2.69 mm
L/W Ratio1.01
Top View
4.30 mm4.27 mm0.31 ctE / I1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateUNKNOWN 35295295
Side View
Table 55.3%CrownGirdlePavilionCuletDepth 62.9%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: £105 GBP|Low: £101 GBP|High: £243 GBP|Avg: £153 GBP|+3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1£105 GBP
Retailer 4£122 GBP
Retailer 2£131 GBP
Retailer 3£243 GBP

4 data points across 4 retailers

5 retailers£105 GBP to £421 GBP

B+
Cheapest Retailer
-
£105 GBP
$140 USD
B+
Retailer 2
-
£122 GBP
$163 USD
View
B
Retailer 3
-
£131 GBP
$174 USD
View
B
Retailer 4
-
£243 GBP
$324 USD
View
Most Expensive
C
NZ Jewellers
dcdefa32-6dd3-4c51-b118-04fb6897a1bb · Oct 27
£421 GBP
$560 USD
View
4 more retailers have this diamond
Prices start from £105 GBPSave up to £315 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 Round
£105 GBP