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Radiant|Lab Grown|IGI

1.55ct F VS1 Radiant Lab Grown Diamond

GD • F/VS1 • IGI LG687595692

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

Certificate IGI LG687595692

Diamond specifications and retailer prices

From £149 GBP
As of November 4, 2026
Save £1,002 GBP (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,152 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG687595692 or 687595692. Listed at 21 retailers as of November 4, 2026, with prices from £149 to £1,152, a £1,002 spread on the same certified stone. Brilliant Earth lists it at £1,152. 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

1.55
Carat
F
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687595692
Dimensions8.47 × 5.68 × 3.82 mm
L/W Ratio1.49
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.47 mm5.68 mm1.55 ctF / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687595692
Side View
Table 63.0%Crown 43.2°Girdle: MediumPavilion 34.7°Culet: NoneDepth 67.3%

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: Nov 4
Current: £1,152 GBP|Low: £149 GBP|High: £1,263 GBP|Avg: £479 GBP|-8.8%
Brilliant Earth
Retailer 2
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November 5, 2026
Retailer 19£149 GBP
Retailer 12£169 GBP
Retailer 6£173 GBP
Retailer 14£185 GBP
Retailer 10£186 GBP
Retailer 2£214 GBP
Retailer 5£320 GBP
Retailer 8£322 GBP
Retailer 9£331 GBP
Retailer 15£335 GBP
Retailer 13£392 GBP
Retailer 7£435 GBP
Retailer 20£594 GBP
Retailer 4£596 GBP
Retailer 18£624 GBP
Retailer 3£633 GBP
Retailer 16£752 GBP
Retailer 17£861 GBP
Retailer 11£893 GBP
Brilliant Earth£1,152 GBP

31 data points across 20 retailers

21 retailers£149 GBP to £1,152 GBP

A
Cheapest Retailer
-
£149 GBP
A
Retailer 2
-
£173 GBP
View
A
Retailer 3
-
£185 GBP
View
Retailer 4
-
£186 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£214 GBP
View
B+
Retailer 6
-
£320 GBP
View
A
Retailer 7
-
£322 GBP
View
A
Retailer 8
-
£331 GBP
View
A
Retailer 9
-
£335 GBP
View
Retailer 10
-
£335 GBP
View
Price last confirmed 25 days ago
B+
Retailer 11
-
£392 GBP
View
B+
Retailer 12
-
£434 GBP
View
B+
Retailer 13
-
£435 GBP
View
B+
Retailer 14
-
£594 GBP
View
B
Retailer 15
-
£596 GBP
View
B
Retailer 16
-
£624 GBP
View
B
Retailer 17
-
£633 GBP
View
B
Retailer 18
-
£752 GBP
View
B
Retailer 19
-
£861 GBP
View
Retailer 20
-
£893 GBP
View
Price last confirmed 26 days ago
Most Expensive
B
Brilliant Earth
13361250A · Nov 5
£1,152 GBP
$1,550 USD
View
20 more retailers have this diamond
Prices start from £149 GBPSave up to £1,002 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
1.55ct Radiant
£149 GBP