CaratHunter
Plans
Round|Lab Grown|IGI

1.42ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG757541149

Shape and cutting style on the report: Round brilliant

Certificate IGI LG757541149

Diamond specifications and retailer prices

From £222 GBP
$298 USD
As of November 1, 2026
Save £548 GBP (71%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £771 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.42ct lab-grown round diamond

This 1.42ct 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 LG757541149 or 757541149. Listed at 8 retailers as of November 1, 2026, with prices from £222 to £771, a £548 spread on the same certified stone. MOH London lists it at £771. 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

1.42
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG757541149
Dimensions7.18 × 7.14 × 4.47 mm
L/W Ratio1.01
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
7.18 mm7.14 mm1.42 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG757541149
Side View
Table 56.0%Crown 35.7°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £771 GBP|Low: £222 GBP|High: £780 GBP|Avg: £412 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5£222 GBP
Retailer 4£284 GBP
Retailer 2£293 GBP
Retailer 6£356 GBP
Retailer 8£370 GBP
Retailer 3£418 GBP
Retailer 7£570 GBP
MOH London£771 GBP

41 data points across 8 retailers

8 retailers£222 GBP to £771 GBP

B+
Cheapest Retailer
-
£222 GBP
$298 USD
A
Retailer 2
-
£284 GBP
€362 EUR
View
A
Retailer 3
-
£293 GBP
View
A
Retailer 4
-
£356 GBP
$477 USD
View
B+
Retailer 5
-
£370 GBP
$496 USD
View
B+
Retailer 6
-
£418 GBP
$560 USD
View
B+
Retailer 7
-
£570 GBP
$764 USD
View
Most Expensive
B
MOH London
LG757541149 · Nov 1
£771 GBP
View
7 more retailers have this diamond
Prices start from £222 GBPSave up to £548 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
1.42ct Round
£222 GBP