Radiant|Lab Grown|IGI

1.21ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG836604372

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

Certificate IGI LG836604372

Diamond specifications and retailer prices

From £193 GBP
$258 USD
As of October 30, 2026
Save £772 GBP (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £964 GBP at Reve Diamonds · As of November 1, 2026
View at Reve 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 top-tier cut grade and certified by IGI LG836604372 or 836604372. Listed at 16 retailers as of October 30, 2026, with prices from £193 to £964, a £772 spread on the same certified stone. Reve Diamonds lists it at £964. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836604372
Dimensions5.89 × 5.72 × 3.98 mm
L/W Ratio1.03
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.89 mm5.72 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836604372
Side View
Table 67.0%Crown 41.9°Girdle: MED-STKPavilion 34.2°Culet: NoneDepth 69.6%

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: £856 GBP|Low: £193 GBP|High: £964 GBP|Avg: £523 GBP|-1.1%
Retailer 1
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
Reve Diamonds
November 1, 2026
Retailer 6£193 GBP
Retailer 14£213 GBP
Retailer 8£285 GBP
Retailer 15£287 GBP
Retailer 9£357 GBP
Retailer 10£367 GBP
Retailer 5£376 GBP
Retailer 3£393 GBP
Retailer 12£549 GBP
Retailer 13£560 GBP
Retailer 2£690 GBP
Retailer 4£725 GBP
Retailer 7£726 GBP
Retailer 1£856 GBP
Retailer 11£881 GBP
Reve Diamonds£964 GBP

35 data points across 16 retailers

16 retailers£193 GBP to £964 GBP

A
Cheapest Retailer
-
£193 GBP
$258 USD
Final sale: no returns
A
Retailer 2
-
£213 GBP
$286 USD
View
A
Retailer 3
-
£285 GBP
View
A
Retailer 4
-
£287 GBP
$385 USD
View
A
Retailer 5
-
£357 GBP
€455 EUR
View
A
Retailer 6
-
£367 GBP
ZAR 7,943 ZAR
View
B+
Retailer 7
-
£376 GBP
$504 USD
View
B+
Retailer 8
-
£393 GBP
$526 USD
View
Retailer 9
-
£549 GBP
$735 USD
View
Price last confirmed 13 days ago
B
Retailer 10
-
£560 GBP
$751 USD
View
B
Retailer 11
-
£690 GBP
SGD 1,249 SGD
View
B
Retailer 12
-
£726 GBP
$972 USD
View
B
Retailer 13
-
£740 GBP
$991 USD
View
B
Retailer 14
-
£856 GBP
View
B
Retailer 15
-
£881 GBP
$1,180 USD
View
Most Expensive
B
Reve Diamonds
006CAE70F · Nov 1
£964 GBP
$1,292 USD
View
15 more retailers have this diamond
Prices start from £193 GBPSave up to £772 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
£193 GBP