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Radiant|Lab Grown|IGI

1.23ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG811638351

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

Certificate IGI LG811638351

Diamond specifications and retailer prices

From $416 SGD
£256 GBP
As of November 2, 2026
Save $2,411 SGD (85%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,044 SGD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.23ct lab-grown radiant diamond

This 1.23ct 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 LG811638351 or 811638351. Listed at 8 retailers as of November 1, 2026, with a 580% 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

1.23
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638351
Dimensions7.72 × 5.28 × 3.61 mm
L/W Ratio1.46
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
7.72 mm5.28 mm1.23 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638351
Side View
Table 67.0%Crown 42.8°Girdle: MediumPavilion 35.6°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,044 SGD|Low: $333 SGD|High: $4,054 SGD|Avg: $1,395 SGD|+6.8%
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
November 2, 2026
Retailer 4$333 SGD
Retailer 8$376 SGD
Retailer 2$416 SGD
Retailer 15$607 SGD
Retailer 13$619 SGD
Retailer 6$948 SGD
Retailer 3$970 SGD
Retailer 16$1,028 SGD
Retailer 7$1,065 SGD
Retailer 12$1,179 SGD
Retailer 14$1,367 SGD
Retailer 9$1,618 SGD
Retailer 5$1,936 SGD
Retailer 10$2,468 SGD
Retailer 11$2,826 SGD
Rare Carat$3,044 SGD

21 data points across 16 retailers

8 retailers$416 SGD to $2,826 SGD

A+
Cheapest Retailer
-
$416 SGD
£256 GBP
A
Retailer 2
-
$619 SGD
$484 USD
View
B+
Retailer 3
-
$1,179 SGD
$922 USD
View
B+
Retailer 4
-
$1,367 SGD
$1,069 USD
View
B+
Retailer 5
-
$1,618 SGD
£996 GBP
View
B
Retailer 6
-
$2,468 SGD
$1,930 USD
View
B
Retailer 7
-
$2,826 SGD
$2,210 USD
View
Most Expensive
Rare Carat
PD-223153 · Oct 18
$3,044 SGD
$2,380 USD
View
Price last confirmed 14 days ago
7 more retailers have this diamond
Prices start from $416 SGDSave up to $2,411 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+
1.23ct Radiant
$416 SGD