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Radiant|Lab Grown|IGI

1.87ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG780666186

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

Certificate IGI LG780666186

Diamond specifications and retailer prices

From $889 CAD
$635 USD
As of October 30, 2026
Save $7,425 CAD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,314 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.87ct lab-grown radiant diamond

This 1.87ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780666186 or 780666186. Listed at 15 retailers as of October 29, 2026, with prices from $889 to $8,314, a $7,425 spread on the same certified stone. Brilliant Earth lists it at $8,314. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.87
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.3°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780666186
Dimensions8.98 × 6.19 × 3.86 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.98 mm6.19 mm1.87 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780666186
Side View
Table 65.0%Crown 41.3°Girdle: Slightly ThickPavilion 32.1°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
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 30
Current: $8,314 CAD|Low: $844 CAD|High: $9,377 CAD|Avg: $3,937 CAD|-3.1%
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
Retailer 14
Retailer 15
Retailer 16
October 29, 2026
Retailer 9$889 CAD
Retailer 16$967 CAD
Retailer 7$1,181 CAD
Retailer 11$1,268 CAD
Retailer 5$1,316 CAD
Retailer 10$1,685 CAD
Retailer 6$1,777 CAD
Retailer 3$1,906 CAD
Retailer 13$2,634 CAD
Retailer 15$3,063 CAD
Retailer 14$3,201 CAD
Retailer 2$4,493 CAD
Retailer 4$6,319 CAD
Retailer 12$7,894 CAD
Retailer 8$7,964 CAD
Brilliant Earth$8,314 CAD

31 data points across 16 retailers

15 retailers$889 CAD to $8,314 CAD

A
Cheapest Retailer
-
$889 CAD
$635 USD
A
Retailer 2
-
$967 CAD
$691 USD
View
A
Retailer 3
-
$1,181 CAD
$844 USD
View
Final sale: no returns
A
Retailer 4
-
$1,268 CAD
$906 USD
View
A
Retailer 5
-
$1,316 CAD
$940 USD
View
A
Retailer 6
-
$1,685 CAD
$1,204 USD
View
A
Retailer 7
-
$1,777 CAD
$1,270 USD
View
B+
Retailer 8
-
$1,906 CAD
€1,297 EUR
View
B+
Retailer 9
-
$2,634 CAD
$1,882 USD
View
B+
Retailer 10
-
$3,063 CAD
$2,188 USD
View
B+
Retailer 11
-
$3,201 CAD
$2,287 USD
View
B+
Retailer 12
-
$4,493 CAD
£2,528 GBP
View
Retailer 13
-
$6,319 CAD
$4,515 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
$7,894 CAD
$5,640 USD
View
Most Expensive
B
Brilliant Earth
18577642Y · Oct 29
$8,314 CAD
$5,940 USD
View
14 more retailers have this diamond
Prices start from $889 CADSave up to $7,425 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
1.87ct Radiant
$889 CAD