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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG778644701

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778644701

Diamond specifications and retailer prices

From $450 CAD
$322 USD
As of October 29, 2026
Save $3,084 CAD (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,534 CAD at Brilliant Earth · As of October 30, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778644701 or 778644701. Listed at 24 retailers as of October 29, 2026, with prices from $450 to $3,534, a $3,084 spread on the same certified stone. Brilliant Earth lists it at $3,534. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778644701
Dimensions7.33 × 7.35 × 4.57 mm
L/W Ratio1.00
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
7.33 mm7.35 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778644701
Side View
Table 56.0%Crown 34.8°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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 29
Current: $3,534 CAD|Low: $450 CAD|High: $5,476 CAD|Avg: $1,342 CAD|-35.5%
Brilliant Earth
Retailer 2
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Retailer 23
October 31, 2026
Retailer 6$450 CAD
Retailer 7$503 CAD
Retailer 21$522 CAD
Retailer 13$557 CAD
Retailer 14$562 CAD
Retailer 3$716 CAD
Retailer 12$775 CAD
Retailer 2$890 CAD
Retailer 22$905 CAD
Retailer 11$965 CAD
Retailer 16$979 CAD
Retailer 17$994 CAD
Retailer 10$1,309 CAD
Retailer 4$1,345 CAD
Retailer 19$1,361 CAD
Retailer 9$1,787 CAD
Retailer 18$1,794 CAD
Retailer 5$1,856 CAD
Retailer 15$1,998 CAD
Retailer 23$2,211 CAD
Retailer 8$2,248 CAD
Retailer 20$2,367 CAD
Brilliant Earth$3,534 CAD

23 data points across 23 retailers

24 retailers$450 CAD to $3,534 CAD

A
Cheapest Retailer
-
$450 CAD
$322 USD
A
Retailer 2
-
$503 CAD
$360 USD
View
Final sale: no returns
A
Retailer 3
-
$522 CAD
$374 USD
View
A
Retailer 4
-
$557 CAD
$399 USD
View
A
Retailer 5
-
$562 CAD
$402 USD
View
A
Retailer 6
-
$716 CAD
£404 GBP
View
A
Retailer 7
-
$775 CAD
$555 USD
View
A
Retailer 8
-
$890 CAD
€607 EUR
View
A
Retailer 9
-
$905 CAD
$648 USD
View
A
Retailer 10
-
$965 CAD
ZAR 11,164 ZAR
View
A
Retailer 11
-
$979 CAD
A$1,078 AUD
View
A
Retailer 12
-
$994 CAD
£560 GBP
View
A
Retailer 13
-
$1,309 CAD
A$1,442 AUD
View
B+
Retailer 14
-
$1,345 CAD
$963 USD
View
B+
Retailer 15
-
$1,361 CAD
$974 USD
View
B+
Retailer 16
-
$1,386 CAD
$992 USD
View
B+
Retailer 17
-
$1,787 CAD
SGD 1,729 SGD
View
B+
Retailer 18
-
$1,794 CAD
$1,284 USD
View
B+
Retailer 19
-
$1,856 CAD
$1,329 USD
View
B+
Retailer 20
-
$1,998 CAD
$1,430 USD
View
B+
Retailer 21
-
$2,211 CAD
$1,583 USD
View
B+
Retailer 22
-
$2,248 CAD
£1,267 GBP
View
B+
Retailer 23
-
$2,367 CAD
A$2,607 AUD
View
Most Expensive
B
Brilliant Earth
21000796A · Oct 30
$3,534 CAD
$2,530 USD
View
23 more retailers have this diamond
Prices start from $450 CADSave up to $3,084 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
$450 CAD