CaratHunter
Plans
Radiant|Lab Grown|IGI

1.28ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG704537503

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

Certificate IGI LG704537503

Diamond specifications and retailer prices

From $940 SGD
$735 USD
As of October 30, 2026
Save $2,883 SGD (75%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,822 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG704537503 or 704537503. Listed at 3 retailers as of October 29, 2026, with prices from $940 to $3,822, a $2,883 spread on the same certified stone. Brilliant Earth lists it at $3,822. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG704537503
Dimensions7.74 × 5.36 × 3.61 mm
L/W Ratio1.44
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.74 mm5.36 mm1.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG704537503
Side View
Table 64.0%Crown 42.1°Girdle: MED-STKPavilion 33.8°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
A
Excellent
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: Oct 30
Current: $3,822 SGD|Low: $940 SGD|High: $3,950 SGD|Avg: $2,180 SGD|-3.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 3$940 SGD
Retailer 4$1,327 SGD
Retailer 2$1,892 SGD
Retailer 5$2,847 SGD
Brilliant Earth$3,822 SGD

6 data points across 5 retailers

3 retailers$940 SGD to $3,822 SGD

A
Cheapest Retailer
-
$940 SGD
$735 USD
B+
Retailer 2
-
$1,892 SGD
A$2,277 AUD
View
Most Expensive
B
Brilliant Earth
20170584Y · Oct 29
$3,822 SGD
$2,990 USD
View
2 more retailers have this diamond
Prices start from $940 SGDSave up to $2,883 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
$940 SGD