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 $297 CAD
$212 USD
As of October 27, 2026
Save $3,160 CAD (91%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,457 CAD 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 $297 to $3,457, a $3,160 spread on the same certified stone. Brilliant Earth lists it at $3,457. 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
Color
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: $3,457 CAD|Low: $297 CAD|High: $3,457 CAD|Avg: $1,112 CAD
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 7
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Retailer 11
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Retailer 19
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Retailer 21
October 29, 2026
Retailer 5$297 CAD
Retailer 10$332 CAD
Retailer 21$343 CAD
Retailer 3$367 CAD
Retailer 7$367 CAD
Retailer 19$380 CAD
Retailer 15$631 CAD
Retailer 6$631 CAD
Retailer 18$666 CAD
Retailer 13$675 CAD
Retailer 9$711 CAD
Retailer 16$898 CAD
Retailer 4$1,169 CAD
Retailer 8$1,180 CAD
Retailer 20$1,184 CAD
Retailer 11$1,255 CAD
Retailer 14$1,401 CAD
Retailer 2$1,479 CAD
Retailer 17$2,596 CAD
Retailer 12$2,913 CAD
Brilliant Earth$3,457 CAD

22 data points across 21 retailers

21 retailers$297 CAD to $3,457 CAD

A
Cheapest Retailer
-
$297 CAD
$212 USD
A
Retailer 2
-
$332 CAD
$237 USD
View
Final sale: no returns
A
Retailer 3
-
$343 CAD
$245 USD
View
A
Retailer 4
-
$367 CAD
$262 USD
View
A
Retailer 5
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$367 CAD
$262 USD
View
A
Retailer 6
-
$380 CAD
£214 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
$631 CAD
ZAR 7,282 ZAR
View
A
Retailer 8
-
$631 CAD
$451 USD
View
A
Retailer 9
-
$666 CAD
€453 EUR
View
A
Retailer 10
-
$675 CAD
£380 GBP
View
A
Retailer 11
-
$711 CAD
$508 USD
View
A
Retailer 12
-
$898 CAD
A$987 AUD
View
B+
Retailer 13
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$1,169 CAD
$835 USD
View
B+
Retailer 14
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$1,180 CAD
$843 USD
View
B+
Retailer 15
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$1,184 CAD
$846 USD
View
B+
Retailer 16
-
$1,255 CAD
$897 USD
View
B+
Retailer 17
-
$1,388 CAD
$992 USD
View
B+
Retailer 18
-
$1,479 CAD
£832 GBP
View
B
Retailer 19
-
$2,596 CAD
$1,855 USD
View
Price last confirmed 10 days ago
B
Retailer 20
-
$2,913 CAD
$2,081 USD
View
Most Expensive
B
Brilliant Earth
21738500A · Oct 28
$3,457 CAD
$2,470 USD
View
20 more retailers have this diamond
Prices start from $297 CADSave up to $3,160 CAD

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
$297 CAD