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Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG788625367

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

Certificate IGI LG788625367

Diamond specifications and retailer prices

From $470 CAD
£265 GBP
As of November 2, 2026
Save $2,729 CAD (85%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,457 CAD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 top-tier cut grade and certified by IGI LG788625367 or 788625367. Listed at 9 retailers as of November 1, 2026, with a 580% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.7°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788625367
Dimensions7.58 × 5.52 × 3.70 mm
L/W Ratio1.37
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
7.58 mm5.52 mm1.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788625367
Side View
Table 66.0%Crown 40.7°Girdle: MediumPavilion 36.9°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
A+
Exceptional
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: $3,457 CAD|Low: $360 CAD|High: $4,596 CAD|Avg: $1,608 CAD|+5.4%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
November 2, 2026
Retailer 4$360 CAD
Retailer 6$406 CAD
Retailer 2$470 CAD
Retailer 14$697 CAD
Retailer 3$935 CAD
Retailer 9$1,074 CAD
Retailer 18$1,111 CAD
Retailer 10$1,181 CAD
Retailer 5$1,240 CAD
Retailer 13$1,335 CAD
Retailer 17$1,341 CAD
Retailer 16$1,536 CAD
Retailer 15$1,833 CAD
Retailer 7$2,094 CAD
Retailer 8$2,299 CAD
Retailer 11$2,808 CAD
Retailer 12$3,199 CAD
Rare Carat$3,457 CAD

23 data points across 18 retailers

9 retailers$470 CAD to $3,199 CAD

A+
Cheapest Retailer
-
$470 CAD
£265 GBP
A
Retailer 2
-
$697 CAD
$499 USD
View
B+
Retailer 3
-
$1,335 CAD
$956 USD
View
Retailer 4
-
$1,341 CAD
$960 USD
View
Price last confirmed 10 days ago
B+
Retailer 5
-
$1,536 CAD
$1,100 USD
View
B+
Retailer 6
-
$1,833 CAD
£1,033 GBP
View
B
Retailer 7
-
$2,808 CAD
$2,010 USD
View
B
Retailer 8
-
$3,199 CAD
$2,290 USD
View
Most Expensive
Rare Carat
MR-186136 · Oct 18
$3,457 CAD
$2,475 USD
View
Price last confirmed 14 days ago
8 more retailers have this diamond
Prices start from $470 CADSave up to $2,729 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
$470 CAD