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Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

VG • D/FL • IGI LG815697866

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

Certificate IGI LG815697866

Diamond specifications and retailer prices

From $471 CAD
£265 GBP
As of November 2, 2026
Save $2,730 CAD (85%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,066 CAD at Rare Carat · As of October 21, 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 very-good cut grade and certified by IGI LG815697866 or 815697866. Listed at 9 retailers as of November 2, 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. 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
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815697866
Dimensions7.50 × 5.23 × 3.65 mm
L/W Ratio1.43
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
7.50 mm5.23 mm1.28 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815697866
Side View
Table 70.0%Crown 46°Girdle: MED-STKPavilion 36.8°Culet: NoneDepth 69.8%

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: $4,066 CAD|Low: $379 CAD|High: $4,597 CAD|Avg: $1,604 CAD|+23.9%
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
Retailer 16
Retailer 17
November 2, 2026
Retailer 5$379 CAD
Retailer 6$428 CAD
Retailer 2$471 CAD
Retailer 14$697 CAD
Retailer 3$954 CAD
Retailer 7$1,074 CAD
Retailer 4$1,099 CAD
Retailer 17$1,167 CAD
Retailer 8$1,251 CAD
Retailer 13$1,336 CAD
Retailer 16$1,342 CAD
Retailer 15$1,537 CAD
Retailer 11$1,842 CAD
Retailer 9$2,191 CAD
Retailer 10$2,809 CAD
Retailer 12$3,200 CAD
Rare Carat$4,066 CAD

21 data points across 17 retailers

9 retailers$471 CAD to $3,200 CAD

A
Cheapest Retailer
-
$471 CAD
£265 GBP
A
Retailer 2
-
$697 CAD
$499 USD
View
B+
Retailer 3
-
$1,336 CAD
$956 USD
View
Retailer 4
-
$1,342 CAD
$960 USD
View
Price last confirmed 10 days ago
B+
Retailer 5
-
$1,537 CAD
$1,100 USD
View
B+
Retailer 6
-
$1,842 CAD
£1,038 GBP
View
B
Retailer 7
-
$2,809 CAD
$2,010 USD
View
B
Retailer 8
-
$3,200 CAD
$2,290 USD
View
Most Expensive
Rare Carat
PE1710_l_831604041 · Oct 21
$4,066 CAD
$2,910 USD
View
Price last confirmed 12 days ago
8 more retailers have this diamond
Prices start from $471 CADSave up to $2,730 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
$471 CAD