Round|Lab Grown|IGI

1.50ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG805666699

Shape and cutting style on the report: Round brilliant

Certificate IGI LG805666699

Diamond specifications and retailer prices

From £392 GBP
A$808 AUD
As of October 31, 2026
17 retailers carry this diamond
Most expensive: £887 GBP at Reve Diamonds · As of October 21, 2026
View at Reve Diamonds

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 top-tier cut grade and certified by IGI LG805666699 or 805666699. Listed at 17 retailers as of October 31, 2026. 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

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805666699
Dimensions7.36 × 7.29 × 4.48 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.36 mm7.29 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805666699
Side View
Table 61.0%Crown 34.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.1%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: £165 GBP|Low: £119 GBP|High: £887 GBP|Avg: £394 GBP|+39.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Reve Diamonds
October 21, 2026
Retailer 5£149 GBP
Retailer 1£165 GBP
Retailer 17£172 GBP
Retailer 7£184 GBP
Retailer 18£184 GBP
Retailer 13£305 GBP
Retailer 6£312 GBP
Retailer 11£318 GBP
Retailer 3£319 GBP
Retailer 12£321 GBP
Retailer 10£392 GBP
Retailer 4£431 GBP
Retailer 16£483 GBP
Retailer 14£549 GBP
Retailer 8£590 GBP
Retailer 2£631 GBP
Retailer 9£649 GBP
Retailer 15£863 GBP
Reve Diamonds£887 GBP

35 data points across 19 retailers

17 retailers

Retailer 1
-
£149 GBP
$199 USD
Price last confirmed 10 days ago
Retailer 2
-
£172 GBP
$230 USD
View
Price last confirmed 11 days ago
Retailer 3
-
£184 GBP
$246 USD
View
Price last confirmed 14 days ago
Retailer 4
-
£184 GBP
$246 USD
View
Price last confirmed 12 days ago
Retailer 5
-
£312 GBP
$418 USD
View
Price last confirmed 9 days ago
Retailer 6
-
£318 GBP
View
Price last confirmed 10 days ago
Retailer 7
-
£319 GBP
$428 USD
View
Price last confirmed 9 days ago
Retailer 8
-
£321 GBP
View
Price last confirmed 10 days ago
B+
Retailer 9
-
£392 GBP
A$808 AUD
View
Retailer 10
-
£431 GBP
$578 USD
View
Price last confirmed 9 days ago
Retailer 11
-
£483 GBP
$647 USD
View
Price last confirmed 9 days ago
Retailer 12
-
£549 GBP
$735 USD
View
Price last confirmed 9 days ago
Retailer 13
-
£590 GBP
$791 USD
View
Price last confirmed 13 days ago
Retailer 14
-
£631 GBP
$845 USD
View
Price last confirmed 9 days ago
Retailer 15
-
£649 GBP
$870 USD
View
Price last confirmed 9 days ago
Retailer 16
-
£863 GBP
View
Price last confirmed 12 days ago
Most Expensive
Reve Diamonds
DD05CB7DE · Oct 21
£887 GBP
$1,189 USD
View
Price last confirmed 9 days ago
16 more retailers have this diamond
Prices start from £392 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+
1.50ct Round
£392 GBP