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Round|Lab Grown|IGI

1.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG780685531

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780685531

Diamond specifications and retailer prices

From $1,029 CAD
$735 USD
As of October 29, 2026
Save $5,773 CAD (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,802 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round 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 LG780685531 or 780685531. Listed at 22 retailers as of October 29, 2026, with prices from $1,029 to $6,802, a $5,773 spread on the same certified stone. Brilliant Earth lists it at $6,802. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780685531
Dimensions7.40 × 7.46 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.40 mm7.46 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780685531
Side View
Table 55.0%Crown 32.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.9%

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 29
Current: $6,802 CAD|Low: $883 CAD|High: $6,802 CAD|Avg: $2,744 CAD
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 30, 2026
Retailer 3$920 CAD
Retailer 4$1,029 CAD
Retailer 7$1,066 CAD
Retailer 2$1,464 CAD
Retailer 11$1,512 CAD
Retailer 6$1,526 CAD
Retailer 14$1,645 CAD
Retailer 9$1,696 CAD
Retailer 13$1,943 CAD
Retailer 15$2,477 CAD
Retailer 16$3,436 CAD
Retailer 8$3,590 CAD
Retailer 5$3,712 CAD
Retailer 12$4,501 CAD
Retailer 10$5,036 CAD
Brilliant Earth$6,802 CAD

36 data points across 16 retailers

22 retailers$1,029 CAD to $6,802 CAD

Retailer 1
-
$920 CAD
$657 USD
Price last confirmed 20 days ago
Retailer 2
-
$1,001 CAD
$715 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$1,029 CAD
$735 USD
View
Final sale: no returns
Retailer 4
-
$1,066 CAD
$762 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$1,066 CAD
$762 USD
View
Price last confirmed 28 days ago
A
Retailer 6
-
$1,407 CAD
$1,005 USD
View
A
Retailer 7
-
$1,464 CAD
£824 GBP
View
B+
Retailer 8
-
$1,506 CAD
$1,076 USD
View
B+
Retailer 9
-
$1,512 CAD
$1,080 USD
View
B+
Retailer 10
-
$1,526 CAD
$1,090 USD
View
B+
Retailer 11
-
$1,645 CAD
A$1,808 AUD
View
B+
Retailer 12
-
$1,696 CAD
£954 GBP
View
B+
Retailer 13
-
$1,943 CAD
ZAR 22,422 ZAR
View
B
Retailer 14
-
$2,477 CAD
$1,770 USD
View
Retailer 15
-
$2,999 CAD
$2,143 USD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
$3,436 CAD
$2,455 USD
View
B
Retailer 17
-
$3,590 CAD
SGD 3,466 SGD
View
B
Retailer 18
-
$3,680 CAD
$2,630 USD
View
B
Retailer 19
-
$3,712 CAD
$2,652 USD
View
B
Retailer 20
-
$4,501 CAD
£2,532 GBP
View
B
Retailer 21
-
$5,036 CAD
€3,427 EUR
View
Most Expensive
B
Brilliant Earth
18647900A · Oct 29
$6,802 CAD
$4,860 USD
View
21 more retailers have this diamond
Prices start from $1,029 CADSave up to $5,773 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
1.51ct Round
$1,029 CAD