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Radiant|Lab Grown|IGI

1.58ct F VS1 Radiant Lab Grown Diamond

EX • F/VS1 • IGI LG778670775

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

Certificate IGI LG778670775

Diamond specifications and retailer prices

From £150 GBP
$201 USD
As of October 30, 2026
Save £834 GBP (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £984 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.58ct lab-grown radiant diamond

This 1.58ct 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 top-tier cut grade and certified by IGI LG778670775 or 778670775. Listed at 21 retailers as of October 30, 2026, with prices from £150 to £984, a £834 spread on the same certified stone. Brilliant Earth lists it at £984. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.58
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.9°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778670775
Dimensions8.35 × 3.62 mm
L/W Ratio2.31
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.35 mm3.62 mm1.58 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778670775
Side View
Table 70.0%Crown 44.9°Girdle: STK-THKPavilion 32°Culet: NoneDepth 62.0%

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: £984 GBP|Low: £145 GBP|High: £1,148 GBP|Avg: £465 GBP|-13.7%
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 12
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Retailer 20
October 31, 2026
Retailer 15£150 GBP
Retailer 14£167 GBP
Retailer 8£174 GBP
Retailer 20£186 GBP
Retailer 11£187 GBP
Retailer 5£321 GBP
Retailer 16£323 GBP
Retailer 17£341 GBP
Retailer 9£406 GBP
Retailer 13£434 GBP
Retailer 6£435 GBP
Retailer 2£484 GBP
Retailer 12£601 GBP
Retailer 10£607 GBP
Retailer 19£637 GBP
Retailer 3£661 GBP
Retailer 4£734 GBP
Retailer 18£747 GBP
Retailer 7£874 GBP
Brilliant Earth£984 GBP

28 data points across 20 retailers

21 retailers£150 GBP to £984 GBP

A
Cheapest Retailer
-
£150 GBP
$201 USD
A
Retailer 2
-
£167 GBP
$224 USD
View
Final sale: no returns
A
Retailer 3
-
£174 GBP
$234 USD
View
A
Retailer 4
-
£186 GBP
$249 USD
View
Retailer 5
-
£187 GBP
$251 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
£321 GBP
ZAR 6,954 ZAR
View
B+
Retailer 7
-
£323 GBP
$433 USD
View
A
Retailer 8
-
£341 GBP
View
A
Retailer 9
-
£406 GBP
$545 USD
View
A
Retailer 10
-
£434 GBP
$583 USD
View
A
Retailer 11
-
£435 GBP
A$899 AUD
View
B+
Retailer 12
-
£484 GBP
$649 USD
View
B+
Retailer 13
-
£601 GBP
$806 USD
View
B+
Retailer 14
-
£607 GBP
SGD 1,100 SGD
View
B+
Retailer 15
-
£637 GBP
$855 USD
View
B+
Retailer 16
-
£661 GBP
A$1,364 AUD
View
B+
Retailer 17
-
£734 GBP
$985 USD
View
B+
Retailer 18
-
£747 GBP
$1,002 USD
View
B
Retailer 19
-
£765 GBP
$1,027 USD
View
Retailer 20
-
£874 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21501264A · Oct 30
£984 GBP
$1,320 USD
View
20 more retailers have this diamond
Prices start from £150 GBPSave up to £834 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
1.58ct Radiant
£150 GBP