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Round|Lab Grown|IGI

1.50ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG776652956

Shape and cutting style on the report: Round brilliant

Certificate IGI LG776652956

Diamond specifications and retailer prices

From £161 GBP
$216 USD
As of October 29, 2026
Save £768 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £929 GBP at Reve Diamonds · As of October 30, 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 LG776652956 or 776652956. Listed at 20 retailers as of October 29, 2026, with prices from £161 to £929, a £768 spread on the same certified stone. Reve Diamonds lists it at £929. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776652956
Dimensions7.27 × 7.33 × 4.54 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
7.27 mm7.33 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776652956
Side View
Table 58.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

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: Oct 29
Current: £407 GBP|Low: £154 GBP|High: £929 GBP|Avg: £419 GBP|+1.2%
Retailer 1
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Retailer 14
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Retailer 17
Retailer 18
Reve Diamonds
October 31, 2026
Retailer 17£161 GBP
Retailer 9£180 GBP
Retailer 3£187 GBP
Retailer 2£200 GBP
Retailer 7£200 GBP
Retailer 5£269 GBP
Retailer 4£317 GBP
Retailer 15£324 GBP
Retailer 12£346 GBP
Retailer 13£370 GBP
Retailer 8£390 GBP
Retailer 1£407 GBP
Retailer 11£489 GBP
Retailer 16£556 GBP
Retailer 6£643 GBP
Retailer 18£649 GBP
Retailer 10£682 GBP
Retailer 14£806 GBP
Reve Diamonds£929 GBP

41 data points across 19 retailers

20 retailers£161 GBP to £929 GBP

A
Cheapest Retailer
-
£161 GBP
$216 USD
A
Retailer 2
-
£180 GBP
$241 USD
View
Final sale: no returns
A
Retailer 3
-
£187 GBP
$251 USD
View
A
Retailer 4
-
£200 GBP
$268 USD
View
A
Retailer 5
-
£200 GBP
$268 USD
View
B+
Retailer 6
-
£269 GBP
$360 USD
View
A
Retailer 7
-
£317 GBP
$425 USD
View
A
Retailer 8
-
£324 GBP
€414 EUR
View
A
Retailer 9
-
£346 GBP
View
A
Retailer 10
-
£370 GBP
View
B+
Retailer 11
-
£390 GBP
$522 USD
View
A
Retailer 12
-
£407 GBP
A$838 AUD
View
B+
Retailer 13
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£489 GBP
$655 USD
View
B
Retailer 14
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£519 GBP
$695 USD
View
B+
Retailer 15
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£556 GBP
$745 USD
View
B
Retailer 16
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£643 GBP
$861 USD
View
B
Retailer 17
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£649 GBP
$870 USD
View
B
Retailer 18
-
£682 GBP
$914 USD
View
B
Retailer 19
-
£806 GBP
View
Most Expensive
B
Reve Diamonds
DDFA18ECD · Oct 30
£929 GBP
$1,245 USD
View
19 more retailers have this diamond
Prices start from £161 GBPSave up to £768 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
£161 GBP