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Round|Lab Grown|IGI

1.23ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG778645544

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778645544

Diamond specifications and retailer prices

From $391 CAD
$280 USD
As of October 30, 2026
Save $2,802 CAD (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,325 CAD at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778645544 or 778645544. Listed at 23 retailers as of October 27, 2026, with a 716% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778645544
Dimensions6.97 × 6.99 × 4.20 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
6.97 mm6.99 mm1.23 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778645544
Side View
Table 58.0%Crown 33.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.1%

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 30
Current: $3,325 CAD|Low: $278 CAD|High: $3,325 CAD|Avg: $1,181 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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 30, 2026
Retailer 15$391 CAD
Retailer 6$429 CAD
Retailer 20$483 CAD
Retailer 5$587 CAD
Retailer 18$587 CAD
Retailer 13$713 CAD
Retailer 16$746 CAD
Retailer 4$786 CAD
Retailer 2$825 CAD
Retailer 8$943 CAD
Retailer 17$1,058 CAD
Retailer 19$1,099 CAD
Retailer 11$1,405 CAD
Retailer 9$1,469 CAD
Retailer 3$1,521 CAD
Retailer 14$1,751 CAD
Retailer 7$1,774 CAD
Retailer 10$1,894 CAD
Retailer 12$3,193 CAD
Brilliant Earth$3,325 CAD

25 data points across 20 retailers

23 retailers$391 CAD to $3,193 CAD

Retailer 1
-
$351 CAD
$251 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$391 CAD
$280 USD
View
Final sale: no returns
Retailer 3
-
$406 CAD
$291 USD
View
Price last confirmed 38 days ago
Retailer 4
-
$429 CAD
$307 USD
View
Price last confirmed 39 days ago
A
Retailer 5
-
$483 CAD
HK$2,700 HKD
View
A
Retailer 6
-
$587 CAD
$420 USD
View
A
Retailer 7
-
$587 CAD
$420 USD
View
A
Retailer 8
-
$713 CAD
€486 EUR
View
A
Retailer 9
-
$746 CAD
ZAR 8,633 ZAR
View
A
Retailer 10
-
$786 CAD
$563 USD
View
A
Retailer 11
-
$825 CAD
£465 GBP
View
B+
Retailer 12
-
$943 CAD
$675 USD
View
B+
Retailer 13
-
$1,058 CAD
A$1,165 AUD
View
B+
Retailer 14
-
$1,099 CAD
$787 USD
View
Retailer 15
-
$1,397 CAD
$1,000 USD
View
Price last confirmed 40 days ago
B+
Retailer 16
-
$1,405 CAD
SGD 1,359 SGD
View
B+
Retailer 17
-
$1,469 CAD
$1,052 USD
View
B+
Retailer 18
-
$1,521 CAD
$1,089 USD
View
B+
Retailer 19
-
$1,751 CAD
£987 GBP
View
Retailer 20
-
$1,774 CAD
$1,270 USD
View
Price last confirmed 51 days ago
B
Retailer 21
-
$1,894 CAD
$1,356 USD
View
B
Retailer 22
-
$3,193 CAD
£1,800 GBP
View
Most Expensive
Brilliant Earth
18359515A · Oct 21
$3,325 CAD
$2,380 USD
View
Price last confirmed 9 days ago
22 more retailers have this diamond
Prices start from $391 CADSave up to $2,802 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
1.23ct Round
$391 CAD