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Round|Lab Grown|IGI

1.57ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG685518428

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685518428

Diamond specifications and retailer prices

From $1,614 CAD
A$1,778 AUD
As of October 31, 2026
8 retailers carry this diamond
Most expensive: $2,781 CAD at Rare Carat · As of September 13, 2026
View at Rare Carat

About this 1.57ct lab-grown round diamond

This 1.57ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG685518428 or 685518428. Listed at 8 retailers as of October 31, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685518428
Dimensions7.39 × 7.47 × 4.61 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
7.39 mm7.47 mm1.57 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685518428
Side View
Table 57.0%Crown 35.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $2,781 CAD|Low: $458 CAD|High: $5,113 CAD|Avg: $2,007 CAD
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
October 3, 2026
Retailer 12$644 CAD
Retailer 3$714 CAD
Retailer 9$1,030 CAD
Retailer 15$1,034 CAD
Retailer 6$1,091 CAD
Retailer 13$1,239 CAD
Retailer 14$1,323 CAD
Retailer 2$1,614 CAD
Retailer 16$1,841 CAD
Retailer 8$2,533 CAD
Retailer 7$2,598 CAD
Retailer 4$2,738 CAD
Rare Carat$2,781 CAD
Retailer 10$2,893 CAD
Retailer 11$2,920 CAD
Retailer 5$5,113 CAD

9 data points across 16 retailers

8 retailers

Retailer 1
-
$576 CAD
$412 USD
Price last confirmed 43 days ago
Retailer 2
-
$704 CAD
$504 USD
View
Price last confirmed 39 days ago
Retailer 3
-
$1,323 CAD
ZAR 15,305 ZAR
View
Price last confirmed 43 days ago
B+
Retailer 4
-
$1,614 CAD
A$1,778 AUD
View
Retailer 5
-
$1,841 CAD
$1,318 USD
View
Price last confirmed 39 days ago
Retailer 6
-
$2,267 CAD
A$2,497 AUD
View
Price last confirmed 94 days ago
Retailer 7
-
$2,531 CAD
$1,812 USD
View
Price last confirmed 40 days ago
Most Expensive
Rare Carat
V665679LG · Sep 13
$2,781 CAD
$1,991 USD
View
Price last confirmed 48 days ago
7 more retailers have this diamond
Prices start from $1,614 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.

B+
1.57ct Round
$1,614 CAD