Radiant|Lab Grown|IGI

1.21ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG744522303

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

Certificate IGI LG744522303

Diamond specifications and retailer prices

From £120 GBP
$161 USD
As of October 30, 2026
Save £1,037 GBP (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,157 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG744522303 or 744522303. Listed at 14 retailers as of October 30, 2026, with prices from £120 to £1,157, a £1,037 spread on the same certified stone. Do Amore Diamonds lists it at £1,157. 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

1.21
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle45.9°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744522303
Dimensions7.30 × 5.17 × 3.68 mm
L/W Ratio1.41
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
7.30 mm5.17 mm1.21 ctD / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG744522303
Side View
Table 63.0%Crown 45.9°Girdle: MED-STKPavilion 36°Culet: NoneDepth 71.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £1,157 GBP|Low: £120 GBP|High: £1,202 GBP|Avg: £446 GBP|+7.6%
Do Amore Diamonds
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
November 1, 2026
Retailer 15£120 GBP
Retailer 4£134 GBP
Retailer 14£140 GBP
Retailer 3£175 GBP
Retailer 13£207 GBP
Retailer 7£257 GBP
Retailer 8£278 GBP
Retailer 12£336 GBP
Retailer 10£413 GBP
Retailer 9£515 GBP
Retailer 11£515 GBP
Retailer 5£529 GBP
Retailer 6£554 GBP
Retailer 2£770 GBP
Do Amore Diamonds£1,157 GBP

28 data points across 15 retailers

14 retailers£120 GBP to £1,157 GBP

A
Cheapest Retailer
-
£120 GBP
$161 USD
A
Retailer 2
-
£134 GBP
$180 USD
View
Final sale: no returns
A
Retailer 3
-
£140 GBP
$187 USD
View
A
Retailer 4
-
£175 GBP
$235 USD
View
B+
Retailer 5
-
£207 GBP
$277 USD
View
A
Retailer 6
-
£278 GBP
€355 EUR
View
B+
Retailer 7
-
£336 GBP
$450 USD
View
B+
Retailer 8
-
£413 GBP
$554 USD
View
Retailer 9
-
£515 GBP
$690 USD
View
Price last confirmed 13 days ago
B
Retailer 10
-
£515 GBP
$690 USD
View
B+
Retailer 11
-
£529 GBP
$709 USD
View
B+
Retailer 12
-
£554 GBP
$742 USD
View
B
Retailer 13
-
£770 GBP
View
Most Expensive
B
Do Amore Diamonds
27-256C52750 · Oct 31
£1,157 GBP
$1,550 USD
View
13 more retailers have this diamond
Prices start from £120 GBPSave up to £1,037 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
1.21ct Radiant
£120 GBP