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Oval|Lab Grown|IGI

0.40ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG623417853

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG623417853

Diamond specifications and retailer prices

From £105 GBP
HK$1,100 HKD
As of October 30, 2026
Save £136 GBP (56%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £241 GBP at MD Diamonds and Jewellers · As of October 29, 2026
View at MD Diamonds and Jewellers

About this 0.4ct lab-grown oval diamond

This 0.4ct lab-grown oval sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG623417853 or 623417853. Listed at 2 retailers as of October 29, 2026, with prices from £105 to £241, a £136 spread on the same certified stone. MD Diamonds and Jewellers lists it at £241. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.3°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623417853
Dimensions6.21 × 4.14 × 2.39 mm
L/W Ratio1.50
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.21 mm4.14 mm0.40 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG623417853
Side View
Table 55.0%Crown 33.3°Girdle: MED-STKPavilion 36.8°Culet: NoneDepth 57.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £241 GBP|Low: £71 GBP|High: £348 GBP|Avg: £224 GBP
MD Diamonds and Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
April 19, 2026
Retailer 10£105 GBP
Retailer 6£149 GBP
Retailer 2£158 GBP
Retailer 4£158 GBP
Retailer 9£180 GBP
MD Diamonds and Jewellers£241 GBP
Retailer 3£261 GBP
Retailer 7£281 GBP
Retailer 5£295 GBP
Retailer 8£345 GBP

61 data points across 10 retailers

2 retailers£105 GBP to £241 GBP

A
Cheapest Retailer
-
£105 GBP
HK$1,100 HKD
Most Expensive
B
MD Diamonds and Jewellers
LG623417853 · Oct 29
£241 GBP
View
1 more retailer has this diamond
Prices start from £105 GBPSave up to £136 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.

A
0.40ct Oval
£105 GBP