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Round|Lab Grown|GIA

0.33ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • GIA 6391704218

Certificate GIA 6391704218

Diamond specifications and retailer prices

From £334 GBP
As of October 30, 2026
Save £265 GBP (44%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £599 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.33ct lab-grown round diamond

This 0.33ct lab-grown round sits in the sub-half-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6391704218. Listed at 3 retailers as of October 26, 2026, with prices from £334 to £599, a £265 spread on the same certified stone. MOH London lists it at £599. 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

0.33
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginLab Grown
Grading LabGIA
CertificateGIA 6391704218
Dimensions4.38 × 4.41 × 2.78 mm
L/W Ratio1.01
Top View
4.38 mm4.41 mm0.33 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6391704218
Side View
Table 56.0%CrownGirdlePavilionCulet: NoneDepth 63.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £599 GBP|Low: £315 GBP|High: £608 GBP|Avg: £428 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2£334 GBP
Retailer 4£395 GBP
Retailer 3£434 GBP
MOH London£599 GBP

40 data points across 4 retailers

3 retailers£334 GBP to £599 GBP

B
Cheapest Retailer
-
£334 GBP
B
Retailer 2
-
£434 GBP
€550 EUR
View
Most Expensive
B
MOH London
ED42A0667 · Oct 26
£599 GBP
View
2 more retailers have this diamond
Prices start from £334 GBPSave up to £265 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
0.33ct Round
£334 GBP