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Round|Lab Grown

0.30ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • TA50B-320-1296

Diamond specifications and retailer prices

From £119 GBP
$159 USD
As of October 30, 2026
Save £8 GBP (6%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £127 GBP at Aurelinne · As of October 27, 2026
View at Aurelinne

About this 0.3ct lab-grown round diamond

This 0.3ct lab-grown round sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade. Listed at 2 retailers as of October 27, 2026, with a relatively tight 7% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.30
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
OriginLab Grown
Grading Lab
CertificateTA50B-320-1296
Dimensions4.31 × 4.29 × 2.59 mm
L/W Ratio1.00
Top View
4.31 mm4.29 mm0.30 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateTA50B-320-1296
Side View
Table 57.0%CrownGirdlePavilionCuletDepth 60.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £127 GBP|Low: £119 GBP|High: £127 GBP|Avg: £123 GBP|+1.8%
Aurelinne
Retailer 2
October 2, 2026
Retailer 2£119 GBP
Aurelinne£127 GBP

3 data points across 2 retailers

2 retailers£119 GBP to £127 GBP

B+
Cheapest Retailer
-
£119 GBP
$159 USD
Most Expensive
B
Aurelinne
a29a5dcb-c265-4513-9922-be45aec9f8fd · Oct 27
£127 GBP
$170 USD
View
1 more retailer has this diamond
Prices start from £119 GBPSave up to £8 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
£119 GBP