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Round|Lab Grown|UNKNOWN

0.31ct E I1 Round Lab Grown Diamond

EX • E/I1 • UNKNOWN 35711711

Certificate UNKNOWN 35711711

Diamond specifications and retailer prices

From £98 GBP
$131 USD
As of October 29, 2026
Save £292 GBP (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £390 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 35711711. Listed at 5 retailers as of October 27, 2026, with prices from £98 to £390, a £292 spread on the same certified stone. NZ Jewellers lists it at £390. 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 35711711
Dimensions4.31 × 4.28 × 2.73 mm
L/W Ratio1.01
Top View
4.31 mm4.28 mm0.31 ctE / I1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateUNKNOWN 35711711
Side View
Table 58.2%CrownGirdlePavilionCuletDepth 63.6%

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: £98 GBP|Low: £94 GBP|High: £230 GBP|Avg: £143 GBP|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1£98 GBP
Retailer 4£113 GBP
Retailer 2£121 GBP
Retailer 3£230 GBP

4 data points across 4 retailers

5 retailers£98 GBP to £390 GBP

B+
Cheapest Retailer
-
£98 GBP
$131 USD
B+
Retailer 2
-
£113 GBP
$152 USD
View
B+
Retailer 3
-
£121 GBP
$162 USD
View
B
Retailer 4
-
£230 GBP
$308 USD
View
Most Expensive
C
NZ Jewellers
7aeb174e-6dab-4acf-bf18-e16b348829ab · Oct 27
£390 GBP
$522 USD
View
4 more retailers have this diamond
Prices start from £98 GBPSave up to £292 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
£98 GBP