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Round|Lab Grown|GIA

0.30ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • GIA 6241481781

Certificate GIA 6241481781

Diamond specifications and retailer prices

From £265 GBP
As of October 30, 2026
Save £219 GBP (45%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £484 GBP at MOH London · As of October 26, 2026
View at MOH London

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6241481781. Listed at 3 retailers as of October 26, 2026, with prices from £265 to £484, a £219 spread on the same certified stone. MOH London lists it at £484. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6241481781
Dimensions4.36 × 4.34 × 2.62 mm
L/W Ratio1.00
Top View
4.36 mm4.34 mm0.30 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6241481781
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 60.2%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £484 GBP|Low: £251 GBP|High: £504 GBP|Avg: £368 GBP|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 3£265 GBP
Retailer 2£342 GBP
Retailer 4£366 GBP
MOH London£484 GBP

40 data points across 4 retailers

3 retailers£265 GBP to £484 GBP

B+
Cheapest Retailer
-
£265 GBP
B
Retailer 2
-
£342 GBP
€436 EUR
View
Most Expensive
B
MOH London
84F4BE75A · Oct 26
£484 GBP
View
2 more retailers have this diamond
Prices start from £265 GBPSave up to £219 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
£265 GBP