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Radiant|Lab Grown|IGI

1.21ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG831632172

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

Certificate IGI LG831632172

Diamond specifications and retailer prices

From €238 EUR
As of November 4, 2026
Save €1,125 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,363 EUR at Michael Trio · As of November 5, 2026
View at Michael Trio

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831632172 or 831632172. Listed at 14 retailers as of November 4, 2026, with prices from €238 to €1,363, a €1,125 spread on the same certified stone. Michael Trio lists it at €1,363. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle53.9°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831632172
Dimensions8.08 × 5.14 × 3.29 mm
L/W Ratio1.57
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.08 mm5.14 mm1.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831632172
Side View
Table 63.0%Crown 53.9°Girdle: MED-STKPavilion 36°Culet: NoneDepth 64.0%

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: Nov 4
Current: €1,363 EUR|Low: €238 EUR|High: €1,388 EUR|Avg: €685 EUR|-1.8%
Michael Trio
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
November 5, 2026
Retailer 9€238 EUR
Retailer 8€270 EUR
Retailer 4€355 EUR
Retailer 3€422 EUR
Retailer 14€455 EUR
Retailer 2€493 EUR
Retailer 13€644 EUR
Retailer 6€679 EUR
Retailer 11€848 EUR
Retailer 12€891 EUR
Retailer 10€915 EUR
Retailer 5€1,034 EUR
Retailer 7€1,051 EUR
Michael Trio€1,363 EUR

22 data points across 14 retailers

14 retailers€238 EUR to €1,363 EUR

A
Cheapest Retailer
-
€238 EUR
Final sale: no returns
A
Retailer 2
-
€270 EUR
View
A
Retailer 3
-
€355 EUR
View
A
Retailer 4
-
€422 EUR
View
A
Retailer 5
-
€455 EUR
View
A
Retailer 6
-
€493 EUR
View
A
Retailer 7
-
€644 EUR
View
B+
Retailer 8
-
€679 EUR
View
B+
Retailer 9
-
€848 EUR
View
B+
Retailer 10
-
€891 EUR
View
B+
Retailer 11
-
€915 EUR
View
B+
Retailer 12
-
€1,034 EUR
View
B+
Retailer 13
-
€1,051 EUR
View
Most Expensive
B+
Michael Trio
1699734723 · Nov 5
€1,363 EUR
SGD 2,075 SGD
View
13 more retailers have this diamond
Prices start from €238 EURSave up to €1,125 EUR

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
€238 EUR