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Radiant|Lab Grown|IGI

1.54ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG566331217

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG566331217

Diamond specifications and retailer prices

From £412 GBP
$552 USD
As of November 1, 2026
Save £1,503 GBP (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,915 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.54ct lab-grown radiant diamond

This 1.54ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG566331217 or 566331217. Listed at 13 retailers as of October 29, 2026, with prices from £412 to £1,915, a £1,503 spread on the same certified stone. MOH London lists it at £1,915. 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

1.54
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.2°
Pavilion angle30°
OriginLab Grown
Grading LabIGI
CertificateIGI LG566331217
Dimensions7.42 × 5.68 × 3.88 mm
L/W Ratio1.31
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
7.42 mm5.68 mm1.54 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG566331217
Side View
Table 68.0%Crown 41.2°Girdle: MediumPavilion 30°Culet: NoneDepth 68.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,915 GBP|Low: £294 GBP|High: £1,927 GBP|Avg: £749 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 8£368 GBP
Retailer 3£412 GBP
Retailer 12£412 GBP
Retailer 4£455 GBP
Retailer 9£456 GBP
Retailer 7£560 GBP
Retailer 5£665 GBP
Retailer 11£710 GBP
Retailer 2£759 GBP
Retailer 10£1,200 GBP
Retailer 6£1,226 GBP
MOH London£1,915 GBP

43 data points across 12 retailers

13 retailers£412 GBP to £1,915 GBP

Retailer 1
-
£368 GBP
$493 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
£412 GBP
$552 USD
View
Final sale: no returns
Retailer 3
-
£412 GBP
$552 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£455 GBP
$610 USD
View
Retailer 5
-
£456 GBP
$611 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£560 GBP
$750 USD
View
B
Retailer 7
-
£665 GBP
€848 EUR
View
B
Retailer 8
-
£710 GBP
$951 USD
View
B
Retailer 9
-
£759 GBP
View
B
Retailer 10
-
£1,060 GBP
View
Retailer 11
-
£1,200 GBP
$1,608 USD
View
Price last confirmed 7 days ago
B
Retailer 12
-
£1,226 GBP
$1,643 USD
View
Most Expensive
B
MOH London
LG566331217 · Oct 29
£1,915 GBP
View
12 more retailers have this diamond
Prices start from £412 GBPSave up to £1,503 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+
1.54ct Radiant
£412 GBP