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 €241 EUR
$269 USD
As of November 1, 2026
Save €1,138 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,379 EUR at Michael Trio · As of October 31, 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 October 31, 2026, with prices from €241 to €1,379, a €1,138 spread on the same certified stone. Michael Trio lists it at €1,379. 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
Color
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 1
Current: €1,379 EUR|Low: €241 EUR|High: €1,400 EUR|Avg: €668 EUR|-1.5%
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 1, 2026
Retailer 2€241 EUR
Retailer 8€274 EUR
Retailer 13€358 EUR
Retailer 10€426 EUR
Retailer 5€459 EUR
Retailer 9€500 EUR
Retailer 6€655 EUR
Retailer 4€685 EUR
Retailer 11€859 EUR
Retailer 14€903 EUR
Retailer 12€927 EUR
Retailer 3€1,043 EUR
Retailer 7€1,067 EUR
Michael Trio€1,379 EUR

21 data points across 14 retailers

14 retailers€241 EUR to €1,379 EUR

A
Cheapest Retailer
-
€241 EUR
$269 USD
Final sale: no returns
A
Retailer 2
-
€274 EUR
£241 GBP
View
A
Retailer 3
-
€358 EUR
$400 USD
View
A
Retailer 4
-
€426 EUR
View
A
Retailer 5
-
€459 EUR
ZAR 8,289 ZAR
View
A
Retailer 6
-
€500 EUR
£440 GBP
View
A
Retailer 7
-
€655 EUR
A$1,125 AUD
View
B+
Retailer 8
-
€685 EUR
$765 USD
View
B+
Retailer 9
-
€859 EUR
$960 USD
View
B+
Retailer 10
-
€903 EUR
$1,008 USD
View
B+
Retailer 11
-
€927 EUR
$1,036 USD
View
B+
Retailer 12
-
€1,043 EUR
A$1,793 AUD
View
B+
Retailer 13
-
€1,067 EUR
£939 GBP
View
Most Expensive
B
Michael Trio
1699734723 · Oct 31
€1,379 EUR
SGD 2,082 SGD
View
13 more retailers have this diamond
Prices start from €241 EURSave up to €1,138 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
€241 EUR