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Radiant|Lab Grown|IGI

1.21ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG768628950

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

Certificate IGI LG768628950

Diamond specifications and retailer prices

From $753 SGD
HK$4,600 HKD
As of November 1, 2026
Save $2,393 SGD (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,146 SGD at Brilliant Earth · As of November 2, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG768628950 or 768628950. Listed at 13 retailers as of November 1, 2026, with prices from $753 to $3,146, a $2,393 spread on the same certified stone. Brilliant Earth lists it at $3,146. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.4°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768628950
Dimensions7.66 × 5.38 × 3.45 mm
L/W Ratio1.42
Culet sizePointed
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
7.66 mm5.38 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768628950
Side View
Table 63.0%Crown 42.4°Girdle: MED-STKPavilion 34.1°Culet: NoneDepth 64.1%

Caratlytics Score

How it works →
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: $3,146 SGD|Low: $732 SGD|High: $4,105 SGD|Avg: $1,657 SGD|-23.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 5$753 SGD
Retailer 13$789 SGD
Retailer 4$799 SGD
Retailer 11$826 SGD
Retailer 7$916 SGD
Retailer 2$974 SGD
Retailer 6$1,017 SGD
Retailer 12$1,294 SGD
Retailer 3$2,018 SGD
Retailer 9$2,211 SGD
Retailer 8$2,619 SGD
Retailer 10$2,993 SGD
Brilliant Earth$3,146 SGD

43 data points across 13 retailers

13 retailers$753 SGD to $3,146 SGD

A
Cheapest Retailer
-
$753 SGD
HK$4,600 HKD
A
Retailer 2
-
$789 SGD
$617 USD
View
A
Retailer 3
-
$799 SGD
$625 USD
View
A
Retailer 4
-
$826 SGD
$646 USD
View
A
Retailer 5
-
$916 SGD
€682 EUR
View
B+
Retailer 6
-
$974 SGD
ZAR 12,309 ZAR
View
B+
Retailer 7
-
$1,017 SGD
£626 GBP
View
B+
Retailer 8
-
$1,294 SGD
$1,012 USD
View
B+
Retailer 9
-
$2,018 SGD
$1,578 USD
View
Retailer 10
-
$2,211 SGD
£1,361 GBP
View
Price last confirmed 8 days ago
B
Retailer 11
-
$2,619 SGD
$2,048 USD
View
Retailer 12
-
$2,993 SGD
$2,340 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
19647211Y · Nov 2
$3,146 SGD
$2,460 USD
View
12 more retailers have this diamond
Prices start from $753 SGDSave up to $2,393 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
$753 SGD