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Round|Lab Grown|IGI

0.35ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG301858

Certificate IGI LG301858

Diamond specifications and retailer prices

From £287 GBP
$385 USD
As of October 31, 2026
Save £80 GBP (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £368 GBP at Fonder Diamond · As of October 31, 2026
View at Fonder Diamond

About this 0.35ct lab-grown round diamond

This 0.35ct lab-grown round sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG301858 or 301858. Listed at 4 retailers as of October 31, 2026, with prices from £287 to £368, a £80 spread on the same certified stone. Fonder Diamond lists it at £368. 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

0.35
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginLab Grown
Grading LabIGI
CertificateIGI LG301858
Dimensions4.52 × 4.54 mm
L/W Ratio1.00
Top View
4.52 mm4.54 mm0.35 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI LG301858
Side View
Table 56.0%CrownGirdle: THN - STKPavilionCulet: NDepth 62.4%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: £368 GBP|Low: £218 GBP|High: £441 GBP|Avg: £335 GBP|-0.4%
Fonder Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 13, 2026
Retailer 2£218 GBP
Retailer 4£287 GBP
Retailer 3£360 GBP
Fonder Diamond£368 GBP
Retailer 5£441 GBP

3 data points across 5 retailers

4 retailers£287 GBP to £368 GBP

B
Cheapest Retailer
-
£287 GBP
$385 USD
B
Retailer 2
-
£299 GBP
$400 USD
View
B
Retailer 3
-
£356 GBP
SGD 645 SGD
View
Most Expensive
B
Fonder Diamond
96911531 · Oct 31
£368 GBP
SGD 666 SGD
View
3 more retailers have this diamond
Prices start from £287 GBPSave up to £80 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
0.35ct Round
£287 GBP