CaratHunter
Plans
Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

GD • D/FL

Diamond specifications and retailer prices

From $306 SGD
$239 USD
As of November 2, 2026
Save $2,083 SGD (87%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,389 SGD at Blue Nile · As of October 31, 2026
View at Blue Nile

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 standard cut grade and certified by IGI. Listed at 5 retailers as of October 31, 2026, with prices from $306 to $2,389, a $2,083 spread on the same certified stone. Blue Nile lists it at $2,389. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Colour
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.74 × 5.26 × 3.72 mm
L/W Ratio1.47
Top View
7.74 mm5.26 mm1.28 ctD / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 62.0%CrownGirdle: MediumPavilionCulet: NoneDepth 70.7%

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: Nov 2
Current: $2,389 SGD|Low: $306 SGD|High: $3,440 SGD|Avg: $1,528 SGD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 2$306 SGD
Retailer 5$354 SGD
Retailer 3$688 SGD
Retailer 4$1,344 SGD
Blue Nile$2,389 SGD
Retailer 6$3,440 SGD

12 data points across 6 retailers

5 retailers$306 SGD to $2,389 SGD

A
Cheapest Retailer
-
$306 SGD
$239 USD
A
Retailer 2
-
$354 SGD
$277 USD
View
B+
Retailer 3
-
$688 SGD
$538 USD
View
B+
Retailer 4
-
$1,344 SGD
$1,051 USD
View
Most Expensive
C
Blue Nile
30353400 · Oct 31
$2,389 SGD
$1,868 USD
View
4 more retailers have this diamond
Prices start from $306 SGDSave up to $2,083 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
$306 SGD