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Round|Lab Grown|IGI

1.38ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG502182360

Shape and cutting style on the report: Round brilliant

Certificate IGI LG502182360

Diamond specifications and retailer prices

From £134 GBP
$180 USD
As of November 1, 2026
Save £644 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £778 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.38ct lab-grown round diamond

This 1.38ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG502182360 or 502182360. Listed at 15 retailers as of November 1, 2026, with prices from £134 to £778, a £644 spread on the same certified stone. MOH London lists it at £778. 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

1.38
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG502182360
Dimensions7.13 × 7.18 × 4.40 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
7.13 mm7.18 mm1.38 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG502182360
Side View
Table 59.0%Crown 35.6°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £778 GBP|Low: £129 GBP|High: £788 GBP|Avg: £308 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7£134 GBP
Retailer 3£149 GBP
Retailer 9£166 GBP
Retailer 10£166 GBP
Retailer 8£220 GBP
Retailer 5£281 GBP
Retailer 4£299 GBP
Retailer 2£329 GBP
Retailer 11£356 GBP
Retailer 6£565 GBP
MOH London£778 GBP

44 data points across 11 retailers

15 retailers£134 GBP to £778 GBP

A
Cheapest Retailer
-
£134 GBP
$180 USD
A
Retailer 2
-
£149 GBP
$200 USD
View
Final sale: no returns
A
Retailer 3
-
£156 GBP
$209 USD
View
Retailer 4
-
£166 GBP
$223 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£166 GBP
$223 USD
View
A
Retailer 6
-
£191 GBP
HK$2,000 HKD
View
B+
Retailer 7
-
£220 GBP
$295 USD
View
A
Retailer 8
-
£281 GBP
€359 EUR
View
A
Retailer 9
-
£299 GBP
View
A
Retailer 10
-
£329 GBP
View
B+
Retailer 11
-
£356 GBP
$477 USD
View
B+
Retailer 12
-
£366 GBP
$491 USD
View
B+
Retailer 13
-
£535 GBP
$717 USD
View
B
Retailer 14
-
£565 GBP
$757 USD
View
Most Expensive
B
MOH London
LG502182360 · Nov 1
£778 GBP
View
14 more retailers have this diamond
Prices start from £134 GBPSave up to £644 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
1.38ct Round
£134 GBP