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Radiant|Lab Grown|IGI

1.28ct D IF Radiant Lab Grown Diamond

VG • D/IF • IGI LG762546104

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

Certificate IGI LG762546104

Diamond specifications and retailer prices

From $589 SGD
HK$3,600 HKD
As of October 31, 2026
Save $1,776 SGD (75%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,365 SGD at Brilliant Earth · As of October 30, 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 very-good cut grade and certified by IGI LG762546104 or 762546104. Listed at 13 retailers as of October 30, 2026, with prices from $589 to $2,365, a $1,776 spread on the same certified stone. Brilliant Earth lists it at $2,365. 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
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762546104
Dimensions5.45 × 5.45 × 3.47 mm
L/W Ratio1.00
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
5.45 mm5.45 mm1.28 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762546104
Side View
Table 66.0%Crown 41.9°Girdle: MediumPavilion 33.3°Culet: NoneDepth 63.7%

Caratlytics Score

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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: Oct 31
Current: $2,365 SGD|Low: $499 SGD|High: $3,452 SGD|Avg: $1,264 SGD|-31.5%
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
October 31, 2026
Retailer 3$589 SGD
Retailer 12$607 SGD
Retailer 4$697 SGD
Retailer 2$711 SGD
Retailer 8$738 SGD
Retailer 6$749 SGD
Retailer 13$848 SGD
Retailer 5$958 SGD
Retailer 11$1,596 SGD
Retailer 7$1,618 SGD
Retailer 9$1,724 SGD
Retailer 10$2,359 SGD
Brilliant Earth$2,365 SGD

42 data points across 13 retailers

13 retailers$589 SGD to $2,365 SGD

A
Cheapest Retailer
-
$589 SGD
HK$3,600 HKD
A
Retailer 2
-
$607 SGD
$475 USD
View
A
Retailer 3
-
$697 SGD
$545 USD
View
A
Retailer 4
-
$711 SGD
€530 EUR
View
A
Retailer 5
-
$738 SGD
ZAR 9,332 ZAR
View
A
Retailer 6
-
$749 SGD
£461 GBP
View
A
Retailer 7
-
$848 SGD
$663 USD
View
B+
Retailer 8
-
$958 SGD
$749 USD
View
B
Retailer 9
-
$1,596 SGD
$1,249 USD
View
B
Retailer 10
-
$1,618 SGD
A$1,947 AUD
View
B
Retailer 11
-
$1,724 SGD
£1,062 GBP
View
Retailer 12
-
$2,359 SGD
$1,845 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
21476681Y · Oct 30
$2,365 SGD
$1,850 USD
View
12 more retailers have this diamond
Prices start from $589 SGDSave up to $1,776 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
$589 SGD