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Radiant|Lab Grown|IGI

1.54ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG689577917

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

Certificate IGI LG689577917

Diamond specifications and retailer prices

From £159 GBP
As of November 4, 2026
Save £916 GBP (85%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £1,074 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.54ct lab-grown radiant diamond

This 1.54ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG689577917 or 689577917. Listed at 25 retailers as of November 4, 2026, with prices from £159 to £1,074, a £916 spread on the same certified stone. Brilliant Earth lists it at £1,074. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689577917
Dimensions6.83 × 6.16 × 4.19 mm
L/W Ratio1.11
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
6.83 mm6.16 mm1.54 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689577917
Side View
Table 65.0%Crown 42.7°Girdle: MediumPavilion 33.1°Culet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,074 GBP|Low: £153 GBP|High: £1,363 GBP|Avg: £477 GBP|-21.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
Retailer 18
November 5, 2026
Retailer 3£159 GBP
Retailer 13£177 GBP
Retailer 8£184 GBP
Retailer 5£196 GBP
Retailer 9£196 GBP
Retailer 14£278 GBP
Retailer 17£318 GBP
Retailer 12£339 GBP
Retailer 2£361 GBP
Retailer 10£386 GBP
Retailer 16£459 GBP
Retailer 7£632 GBP
Retailer 18£634 GBP
Retailer 6£669 GBP
Retailer 15£715 GBP
Retailer 11£788 GBP
Retailer 4£800 GBP
Brilliant Earth£1,074 GBP

45 data points across 18 retailers

25 retailers£159 GBP to £1,074 GBP

A
Cheapest Retailer
-
£159 GBP
A
Retailer 2
-
£177 GBP
View
Final sale: no returns
A
Retailer 3
-
£184 GBP
View
Retailer 4
-
£196 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£196 GBP
View
A
Retailer 6
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£218 GBP
View
B+
Retailer 7
-
£278 GBP
View
A
Retailer 8
-
£318 GBP
View
A
Retailer 9
-
£339 GBP
View
A
Retailer 10
-
£361 GBP
View
A
Retailer 11
-
£386 GBP
View
A
Retailer 12
-
£395 GBP
View
Retailer 13
-
£459 GBP
View
Price last confirmed 9 days ago
B+
Retailer 14
-
£632 GBP
View
B+
Retailer 15
-
£634 GBP
View
B+
Retailer 16
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£637 GBP
View
B+
Retailer 17
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£669 GBP
View
B+
Retailer 18
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£671 GBP
View
Retailer 19
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£715 GBP
View
Price last confirmed 7 days ago
B
Retailer 20
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£767 GBP
View
B+
Retailer 21
-
£788 GBP
View
Retailer 22
-
£800 GBP
View
Price last confirmed 22 days ago
B
Retailer 23
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£801 GBP
View
B
Retailer 24
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£917 GBP
View
Most Expensive
B
Brilliant Earth
17804982A · Nov 4
£1,074 GBP
$1,450 USD
View
24 more retailers have this diamond
Prices start from £159 GBPSave up to £916 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
1.54ct Radiant
£159 GBP