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Radiant|Lab Grown|IGI

1.78ct H VS2 Radiant Lab Grown Diamond

VG • H/VS2 • IGI LG733563519

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

Certificate IGI LG733563519

Diamond specifications and retailer prices

From £181 GBP
$243 USD
As of October 30, 2026
Save £752 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £933 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.78ct lab-grown radiant diamond

This 1.78ct lab-grown radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG733563519 or 733563519. Listed at 14 retailers as of October 28, 2026, with prices from £181 to £933, a £752 spread on the same certified stone. Brilliant Earth lists it at £933. 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

1.78
Carat
H
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733563519
Dimensions8.06 × 5.90 × 4.04 mm
L/W Ratio1.37
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.06 mm5.90 mm1.78 ctH / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733563519
Side View
Table 70.0%Crown 40.2°Girdle: STK-THKPavilion 33°Culet: NoneDepth 68.5%

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 30
Current: £933 GBP|Low: £174 GBP|High: £963 GBP|Avg: £543 GBP|-3.1%
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
Retailer 14
Retailer 15
October 29, 2026
Retailer 10£181 GBP
Retailer 15£203 GBP
Retailer 11£225 GBP
Retailer 13£225 GBP
Retailer 7£377 GBP
Retailer 12£378 GBP
Retailer 3£441 GBP
Retailer 14£475 GBP
Retailer 9£565 GBP
Retailer 6£623 GBP
Retailer 8£743 GBP
Retailer 4£762 GBP
Retailer 5£876 GBP
Retailer 2£906 GBP
Brilliant Earth£933 GBP

19 data points across 15 retailers

14 retailers£181 GBP to £933 GBP

A
Cheapest Retailer
-
£181 GBP
$243 USD
B+
Retailer 2
-
£203 GBP
$272 USD
View
Final sale: no returns
A
Retailer 3
-
£210 GBP
$282 USD
View
A
Retailer 4
-
£225 GBP
$301 USD
View
A
Retailer 5
-
£225 GBP
$301 USD
View
B+
Retailer 6
-
£378 GBP
$506 USD
View
B+
Retailer 7
-
£441 GBP
$591 USD
View
B+
Retailer 8
-
£475 GBP
$637 USD
View
B+
Retailer 9
-
£565 GBP
$757 USD
View
B
Retailer 10
-
£723 GBP
$969 USD
View
Retailer 11
-
£743 GBP
$995 USD
View
Price last confirmed 9 days ago
B
Retailer 12
-
£762 GBP
$1,021 USD
View
B
Retailer 13
-
£906 GBP
View
Most Expensive
B
Brilliant Earth
15784170A · Oct 28
£933 GBP
$1,250 USD
View
13 more retailers have this diamond
Prices start from £181 GBPSave up to £752 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
1.78ct Radiant
£181 GBP