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Radiant|Lab Grown|IGI

1.21ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG840640263

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

Certificate IGI LG840640263

Diamond specifications and retailer prices

From $364 SGD
$285 USD
As of October 31, 2026
Save $2,614 SGD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,979 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG840640263 or 840640263. Listed at 14 retailers as of October 30, 2026, with prices from $364 to $2,979, a $2,614 spread on the same certified stone. Brilliant Earth lists it at $2,979. 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
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.5°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840640263
Dimensions7.23 × 5.19 × 3.53 mm
L/W Ratio1.39
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
7.23 mm5.19 mm1.21 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840640263
Side View
Table 61.0%Crown 48.5°Girdle: STK-THKPavilion 34.4°Culet: NoneDepth 68.0%

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 31
Current: $364 SGD|Low: $364 SGD|High: $1,740 SGD|Avg: $980 SGD
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
October 31, 2026
Retailer 1$364 SGD
Retailer 12$412 SGD
Retailer 10$419 SGD
Retailer 9$653 SGD
Retailer 6$738 SGD
Retailer 5$767 SGD
Retailer 4$984 SGD
Retailer 8$1,002 SGD
Retailer 7$1,254 SGD
Retailer 2$1,316 SGD
Retailer 13$1,316 SGD
Retailer 3$1,526 SGD
Retailer 11$1,711 SGD

24 data points across 13 retailers

14 retailers$364 SGD to $2,979 SGD

A
Cheapest Retailer
-
$364 SGD
$285 USD
A
Retailer 2
-
$412 SGD
£254 GBP
View
A
Retailer 3
-
$419 SGD
$328 USD
View
Final sale: no returns
A
Retailer 4
-
$653 SGD
$511 USD
View
A
Retailer 5
-
$738 SGD
£455 GBP
View
B+
Retailer 6
-
$767 SGD
$600 USD
View
B+
Retailer 7
-
$984 SGD
A$1,184 AUD
View
B+
Retailer 8
-
$1,002 SGD
$784 USD
View
B
Retailer 9
-
$1,254 SGD
$981 USD
View
B+
Retailer 10
-
$1,316 SGD
A$1,584 AUD
View
B+
Retailer 11
-
$1,316 SGD
$1,030 USD
View
B+
Retailer 12
-
$1,526 SGD
£940 GBP
View
B
Retailer 13
-
$1,711 SGD
$1,338 USD
View
Most Expensive
B
Brilliant Earth
22340637A · Oct 30
$2,979 SGD
$2,330 USD
View
13 more retailers have this diamond
Prices start from $364 SGDSave up to $2,614 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
$364 SGD