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Radiant|Lab Grown|IGI

1.21ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG816616105

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

Certificate IGI LG816616105

Diamond specifications and retailer prices

From $386 SGD
$302 USD
As of October 30, 2026
Save $2,388 SGD (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,940 SGD at Rare Carat · As of October 21, 2026
View at Rare Carat

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816616105 or 816616105. Listed at 20 retailers as of October 30, 2026, with a 619% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816616105
Dimensions7.68 × 5.29 × 3.48 mm
L/W Ratio1.45
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
7.68 mm5.29 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816616105
Side View
Table 61.0%Crown 40.1°Girdle: MediumPavilion 34.5°Culet: NoneDepth 65.8%

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: $2,940 SGD|Low: $368 SGD|High: $3,375 SGD|Avg: $1,370 SGD|-1.7%
Rare Carat
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
Retailer 16
Retailer 17
October 30, 2026
Retailer 14$386 SGD
Retailer 10$435 SGD
Retailer 8$560 SGD
Retailer 4$614 SGD
Retailer 16$684 SGD
Retailer 13$705 SGD
Retailer 5$765 SGD
Retailer 11$783 SGD
Retailer 3$1,009 SGD
Retailer 15$1,259 SGD
Retailer 17$1,384 SGD
Retailer 7$1,509 SGD
Retailer 12$1,653 SGD
Retailer 6$1,679 SGD
Retailer 9$2,182 SGD
Retailer 2$2,774 SGD
Rare Carat$2,940 SGD

29 data points across 17 retailers

20 retailers$386 SGD to $2,774 SGD

A
Cheapest Retailer
-
$386 SGD
$302 USD
Final sale: no returns
Retailer 2
-
$433 SGD
$339 USD
View
Price last confirmed 28 days ago
A
Retailer 3
-
$435 SGD
£268 GBP
View
Retailer 4
-
$524 SGD
$410 USD
View
Price last confirmed 33 days ago
Retailer 5
-
$560 SGD
$438 USD
View
Price last confirmed 27 days ago
A
Retailer 6
-
$614 SGD
$480 USD
View
A
Retailer 7
-
$684 SGD
$535 USD
View
A
Retailer 8
-
$705 SGD
ZAR 8,903 ZAR
View
A
Retailer 9
-
$765 SGD
€570 EUR
View
A
Retailer 10
-
$783 SGD
£482 GBP
View
B+
Retailer 11
-
$1,009 SGD
$789 USD
View
B+
Retailer 12
-
$1,259 SGD
$985 USD
View
B+
Retailer 13
-
$1,384 SGD
$1,082 USD
View
B+
Retailer 14
-
$1,509 SGD
View
B
Retailer 15
-
$1,653 SGD
£1,018 GBP
View
B
Retailer 16
-
$1,679 SGD
$1,313 USD
View
Retailer 17
-
$1,800 SGD
$1,408 USD
View
Price last confirmed 30 days ago
Retailer 18
-
$2,182 SGD
£1,344 GBP
View
Price last confirmed 25 days ago
B
Retailer 19
-
$2,774 SGD
$2,170 USD
View
Most Expensive
Rare Carat
PD-231298 · Oct 21
$2,940 SGD
$2,300 USD
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from $386 SGDSave up to $2,388 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
$386 SGD