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Radiant|Lab Grown|IGI

1.40ct F VVS1 Radiant Lab Grown Diamond

GD • F/VVS1 • IGI LG628450993

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

Certificate IGI LG628450993

Diamond specifications and retailer prices

From £183 GBP
$245 USD
As of November 1, 2026
Save £1,382 GBP (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,565 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.4ct lab-grown radiant diamond

This 1.4ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI LG628450993 or 628450993. Listed at 18 retailers as of November 1, 2026, with prices from £183 to £1,565, a £1,382 spread on the same certified stone. Do Amore Diamonds lists it at £1,565. 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

1.40
Carat
F
Colour
VVS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.9°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628450993
Dimensions7.93 × 5.57 × 3.71 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.93 mm5.57 mm1.40 ctF / VVS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628450993
Side View
Table 64.0%Crown 44.9°Girdle: MediumPavilion 36.9°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
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 1
Current: £1,565 GBP|Low: £143 GBP|High: £1,662 GBP|Avg: £617 GBP|+8.8%
Do Amore Diamonds
Retailer 2
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Retailer 22
November 2, 2026
Retailer 7£153 GBP
Retailer 6£177 GBP
Retailer 20£183 GBP
Retailer 22£244 GBP
Retailer 4£271 GBP
Retailer 16£357 GBP
Retailer 9£392 GBP
Retailer 11£432 GBP
Retailer 17£437 GBP
Retailer 18£439 GBP
Retailer 21£464 GBP
Retailer 19£544 GBP
Retailer 15£598 GBP
Retailer 3£652 GBP
Retailer 8£674 GBP
Retailer 5£741 GBP
Retailer 2£748 GBP
Retailer 12£801 GBP
Retailer 14£874 GBP
Retailer 13£894 GBP
Retailer 10£1,040 GBP
Do Amore Diamonds£1,565 GBP

26 data points across 22 retailers

18 retailers£183 GBP to £1,565 GBP

Retailer 1
-
£153 GBP
$205 USD
Price last confirmed 12 days ago
Retailer 2
-
£177 GBP
$238 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
£183 GBP
$245 USD
View
Final sale: no returns
A
Retailer 4
-
£244 GBP
$328 USD
View
B+
Retailer 5
-
£271 GBP
$363 USD
View
B+
Retailer 6
-
£357 GBP
€456 EUR
View
B+
Retailer 7
-
£393 GBP
$527 USD
View
B+
Retailer 8
-
£439 GBP
$589 USD
View
B+
Retailer 9
-
£464 GBP
$622 USD
View
B
Retailer 10
-
£544 GBP
A$1,124 AUD
View
Retailer 11
-
£633 GBP
$850 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
£652 GBP
$875 USD
View
Retailer 13
-
£674 GBP
$904 USD
View
Price last confirmed 11 days ago
Retailer 14
-
£741 GBP
A$1,529 AUD
View
Price last confirmed 8 days ago
B
Retailer 15
-
£748 GBP
$1,004 USD
View
B
Retailer 16
-
£894 GBP
View
B
Retailer 17
-
£1,416 GBP
$1,900 USD
View
Most Expensive
C
Do Amore Diamonds
27-9BDCB2117 · Nov 1
£1,565 GBP
$2,100 USD
View
17 more retailers have this diamond
Prices start from £183 GBPSave up to £1,382 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
1.40ct Radiant
£183 GBP