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Round|Lab Grown|UNKNOWN

0.30ct E I1 Round Lab Grown Diamond

EX • E/I1 • UNKNOWN 35521521

Certificate UNKNOWN 35521521

Diamond specifications and retailer prices

From £103 GBP
$137 USD
As of October 29, 2026
Save £306 GBP (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £409 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 0.3ct lab-grown round diamond

This 0.3ct 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 35521521. Listed at 5 retailers as of October 27, 2026, with prices from £103 to £409, a £306 spread on the same certified stone. NZ Jewellers lists it at £409. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.30
Carat
E
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 35521521
Dimensions4.40 × 4.38 × 2.55 mm
L/W Ratio1.00
Top View
4.40 mm4.38 mm0.30 ctE / I1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 35521521
Side View
Table 59.3%CrownGirdlePavilionCuletDepth 58.1%

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: £103 GBP|Low: £98 GBP|High: £238 GBP|Avg: £149 GBP|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1£103 GBP
Retailer 4£119 GBP
Retailer 2£128 GBP
Retailer 3£238 GBP

4 data points across 4 retailers

5 retailers£103 GBP to £409 GBP

B+
Cheapest Retailer
-
£103 GBP
$137 USD
B+
Retailer 2
-
£119 GBP
$159 USD
View
B
Retailer 3
-
£128 GBP
$170 USD
View
C
Retailer 4
-
£238 GBP
$317 USD
View
Most Expensive
C
NZ Jewellers
415a9b23-571e-4c68-92a5-2486efd3054f · Oct 27
£409 GBP
$545 USD
View
4 more retailers have this diamond
Prices start from £103 GBPSave up to £306 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+
0.30ct Round
£103 GBP