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Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG788625367

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

Certificate IGI LG788625367

Diamond specifications and retailer prices

From $431 SGD
£265 GBP
As of November 2, 2026
Save $2,498 SGD (85%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,165 SGD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG788625367 or 788625367. Listed at 9 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

1.28
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.7°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788625367
Dimensions7.58 × 5.52 × 3.70 mm
L/W Ratio1.37
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
7.58 mm5.52 mm1.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788625367
Side View
Table 66.0%Crown 40.7°Girdle: MediumPavilion 36.9°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
A+
Exceptional
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 2
Current: $3,165 SGD|Low: $330 SGD|High: $4,208 SGD|Avg: $1,472 SGD|+5.4%
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
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Retailer 17
Retailer 18
November 2, 2026
Retailer 4$330 SGD
Retailer 6$372 SGD
Retailer 2$431 SGD
Retailer 14$638 SGD
Retailer 3$856 SGD
Retailer 9$983 SGD
Retailer 18$1,017 SGD
Retailer 10$1,081 SGD
Retailer 5$1,136 SGD
Retailer 13$1,223 SGD
Retailer 17$1,228 SGD
Retailer 16$1,407 SGD
Retailer 15$1,678 SGD
Retailer 7$1,918 SGD
Retailer 8$2,105 SGD
Retailer 11$2,571 SGD
Retailer 12$2,929 SGD
Rare Carat$3,165 SGD

23 data points across 18 retailers

9 retailers$431 SGD to $2,929 SGD

A+
Cheapest Retailer
-
$431 SGD
£265 GBP
A
Retailer 2
-
$638 SGD
$499 USD
View
B+
Retailer 3
-
$1,223 SGD
$956 USD
View
Retailer 4
-
$1,228 SGD
$960 USD
View
Price last confirmed 10 days ago
B+
Retailer 5
-
$1,407 SGD
$1,100 USD
View
B+
Retailer 6
-
$1,678 SGD
£1,033 GBP
View
B
Retailer 7
-
$2,571 SGD
$2,010 USD
View
B
Retailer 8
-
$2,929 SGD
$2,290 USD
View
Most Expensive
Rare Carat
MR-186136 · Oct 18
$3,165 SGD
$2,475 USD
View
Price last confirmed 14 days ago
8 more retailers have this diamond
Prices start from $431 SGDSave up to $2,498 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+
1.28ct Radiant
$431 SGD