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Radiant|Lab Grown|IGI

1.28ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG836617943

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

Certificate IGI LG836617943

Diamond specifications and retailer prices

From $272 SGD
$212 USD
As of October 27, 2026
Save $2,895 SGD (91%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,167 SGD at Brilliant Earth · As of October 28, 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 LG836617943 or 836617943. Listed at 21 retailers as of October 27, 2026, with prices from $272 to $3,167, a $2,895 spread on the same certified stone. Brilliant Earth lists it at $3,167. 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 angle40.9°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617943
Dimensions8.00 × 5.43 × 3.57 mm
L/W Ratio1.47
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
8.00 mm5.43 mm1.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617943
Side View
Table 66.0%Crown 40.9°Girdle: MediumPavilion 35.1°Culet: NoneDepth 65.7%

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 27
Current: $3,167 SGD|Low: $272 SGD|High: $3,167 SGD|Avg: $1,018 SGD
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
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Retailer 21
October 29, 2026
Retailer 5$272 SGD
Retailer 10$304 SGD
Retailer 21$314 SGD
Retailer 3$336 SGD
Retailer 7$336 SGD
Retailer 19$348 SGD
Retailer 15$578 SGD
Retailer 6$578 SGD
Retailer 18$610 SGD
Retailer 13$618 SGD
Retailer 9$651 SGD
Retailer 16$823 SGD
Retailer 4$1,071 SGD
Retailer 8$1,081 SGD
Retailer 20$1,085 SGD
Retailer 11$1,149 SGD
Retailer 14$1,283 SGD
Retailer 2$1,355 SGD
Retailer 17$2,378 SGD
Retailer 12$2,668 SGD
Brilliant Earth$3,167 SGD

22 data points across 21 retailers

21 retailers$272 SGD to $3,167 SGD

A
Cheapest Retailer
-
$272 SGD
$212 USD
A
Retailer 2
-
$304 SGD
$237 USD
View
Final sale: no returns
A
Retailer 3
-
$314 SGD
$245 USD
View
A
Retailer 4
-
$336 SGD
$262 USD
View
A
Retailer 5
-
$336 SGD
$262 USD
View
A
Retailer 6
-
$348 SGD
£214 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
$578 SGD
ZAR 7,282 ZAR
View
A
Retailer 8
-
$578 SGD
$451 USD
View
A
Retailer 9
-
$610 SGD
€453 EUR
View
A
Retailer 10
-
$618 SGD
£380 GBP
View
A
Retailer 11
-
$651 SGD
$508 USD
View
A
Retailer 12
-
$823 SGD
A$987 AUD
View
B+
Retailer 13
-
$1,071 SGD
$835 USD
View
B+
Retailer 14
-
$1,081 SGD
$843 USD
View
B+
Retailer 15
-
$1,085 SGD
$846 USD
View
B+
Retailer 16
-
$1,149 SGD
$897 USD
View
B+
Retailer 17
-
$1,272 SGD
$992 USD
View
B+
Retailer 18
-
$1,355 SGD
£832 GBP
View
B
Retailer 19
-
$2,378 SGD
$1,855 USD
View
Price last confirmed 10 days ago
B
Retailer 20
-
$2,668 SGD
$2,081 USD
View
Most Expensive
B
Brilliant Earth
21738500A · Oct 28
$3,167 SGD
$2,470 USD
View
20 more retailers have this diamond
Prices start from $272 SGDSave up to $2,895 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
$272 SGD