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Round|Lab Grown|IGI

1.50ct E SI1 Round Lab Grown Diamond

GD • E/SI1 • IGI LG772629927

Shape and cutting style on the report: Round brilliant

Certificate IGI LG772629927

Diamond specifications and retailer prices

From £152 GBP
$204 USD
As of October 29, 2026
Save £908 GBP (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,060 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG772629927 or 772629927. Listed at 16 retailers as of October 29, 2026, with prices from £152 to £1,060, a £908 spread on the same certified stone. Brilliant Earth lists it at £1,060. 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

1.50
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle42.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG772629927
Dimensions7.07 × 7.15 × 4.75 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
7.07 mm7.15 mm1.50 ctE / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG772629927
Side View
Table 59.0%Crown 37.6°Girdle: MED-STKPavilion 42.9°Culet: NoneDepth 66.7%

Caratlytics Score

How it works →
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: Oct 29
Current: £1,060 GBP|Low: £146 GBP|High: £1,060 GBP|Avg: £415 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 11£152 GBP
Retailer 13£171 GBP
Retailer 4£177 GBP
Retailer 12£189 GBP
Retailer 8£315 GBP
Retailer 2£327 GBP
Retailer 6£347 GBP
Retailer 3£380 GBP
Retailer 10£472 GBP
Retailer 9£552 GBP
Retailer 5£608 GBP
Retailer 7£889 GBP
Brilliant Earth£1,060 GBP

43 data points across 13 retailers

16 retailers£152 GBP to £1,060 GBP

A
Cheapest Retailer
-
£152 GBP
$204 USD
B+
Retailer 2
-
£171 GBP
$229 USD
View
Final sale: no returns
B+
Retailer 3
-
£177 GBP
$237 USD
View
B+
Retailer 4
-
£189 GBP
$253 USD
View
B+
Retailer 5
-
£189 GBP
$253 USD
View
B
Retailer 6
-
£255 GBP
$342 USD
View
B+
Retailer 7
-
£313 GBP
$420 USD
View
B+
Retailer 8
-
£315 GBP
€402 EUR
View
B+
Retailer 9
-
£327 GBP
View
B+
Retailer 10
-
£347 GBP
View
B+
Retailer 11
-
£380 GBP
$509 USD
View
B
Retailer 12
-
£472 GBP
$632 USD
View
B
Retailer 13
-
£552 GBP
$740 USD
View
B
Retailer 14
-
£608 GBP
$815 USD
View
B
Retailer 15
-
£889 GBP
View
Most Expensive
C
Brilliant Earth
21312837A · Oct 29
£1,060 GBP
$1,420 USD
View
15 more retailers have this diamond
Prices start from £152 GBPSave up to £908 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
1.50ct Round
£152 GBP