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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 $345 SGD
$270 USD
As of October 30, 2026
Save $1,624 SGD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,970 SGD 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 30, 2026, with prices from $345 to $1,970, a $1,624 spread on the same certified stone. Michael Trio lists it at $1,970. 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: Oct 30
Current: $1,970 SGD|Low: $345 SGD|High: $2,000 SGD|Avg: $952 SGD|-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 4$345 SGD
Retailer 7$392 SGD
Retailer 12$511 SGD
Retailer 9$608 SGD
Retailer 5$656 SGD
Retailer 8$714 SGD
Retailer 6$935 SGD
Retailer 3$978 SGD
Retailer 10$1,227 SGD
Retailer 13$1,289 SGD
Retailer 11$1,324 SGD
Retailer 14$1,490 SGD
Retailer 2$1,525 SGD
Michael Trio$1,970 SGD

21 data points across 14 retailers

14 retailers$345 SGD to $1,970 SGD

A
Cheapest Retailer
-
$345 SGD
$270 USD
Final sale: no returns
A
Retailer 2
-
$392 SGD
£241 GBP
View
A
Retailer 3
-
$511 SGD
$400 USD
View
A
Retailer 4
-
$608 SGD
€453 EUR
View
A
Retailer 5
-
$656 SGD
ZAR 8,289 ZAR
View
A
Retailer 6
-
$714 SGD
£440 GBP
View
A
Retailer 7
-
$935 SGD
A$1,125 AUD
View
B+
Retailer 8
-
$978 SGD
$765 USD
View
B+
Retailer 9
-
$1,227 SGD
$960 USD
View
B+
Retailer 10
-
$1,289 SGD
$1,008 USD
View
B+
Retailer 11
-
$1,324 SGD
$1,036 USD
View
B+
Retailer 12
-
$1,490 SGD
A$1,793 AUD
View
B+
Retailer 13
-
$1,525 SGD
£939 GBP
View
Most Expensive
B
Michael Trio
1699734723 · Oct 31
$1,970 SGD
View
13 more retailers have this diamond
Prices start from $345 SGDSave up to $1,624 SGD

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
$345 SGD