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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 $497 NZD
As of November 4, 2026
Save $1,907 NZD (79%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $4,222 NZD 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 24 retailers as of November 4, 2026, with a 384% 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
Colour
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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,222 NZD|Low: $497 NZD|High: $4,222 NZD|Avg: $1,376 NZD
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
November 5, 2026
Retailer 17$497 NZD
Retailer 6$545 NZD
Retailer 18$612 NZD
Retailer 5$745 NZD
Retailer 16$834 NZD
Retailer 14$907 NZD
Retailer 15$953 NZD
Retailer 4$999 NZD
Retailer 2$1,036 NZD
Retailer 8$1,197 NZD
Retailer 13$1,350 NZD
Retailer 12$1,696 NZD
Retailer 9$1,864 NZD
Retailer 3$1,932 NZD
Retailer 11$2,205 NZD
Retailer 7$2,253 NZD
Retailer 10$2,404 NZD
Brilliant Earth$4,222 NZD

27 data points across 18 retailers

24 retailers$497 NZD to $2,404 NZD

Retailer 1
-
$445 NZD
Price last confirmed 44 days ago
A
Retailer 2
-
$497 NZD
View
Final sale: no returns
Retailer 3
-
$516 NZD
View
Price last confirmed 44 days ago
Retailer 4
-
$545 NZD
View
Price last confirmed 44 days ago
A
Retailer 5
-
$612 NZD
View
A
Retailer 6
-
$745 NZD
View
A
Retailer 7
-
$834 NZD
View
A
Retailer 8
-
$907 NZD
View
A
Retailer 9
-
$953 NZD
View
A
Retailer 10
-
$999 NZD
View
A
Retailer 11
-
$1,036 NZD
View
B+
Retailer 12
-
$1,197 NZD
View
B+
Retailer 13
-
$1,350 NZD
View
B+
Retailer 14
-
$1,407 NZD
View
B+
Retailer 15
-
$1,696 NZD
View
Retailer 16
-
$1,774 NZD
View
Price last confirmed 45 days ago
B+
Retailer 17
-
$1,783 NZD
View
B+
Retailer 18
-
$1,864 NZD
View
B+
Retailer 19
-
$1,932 NZD
View
B+
Retailer 20
-
$2,205 NZD
View
Retailer 21
-
$2,253 NZD
View
Price last confirmed 57 days ago
B
Retailer 22
-
$2,404 NZD
View
Retailer 23
-
$4,055 NZD
View
Price last confirmed 9 days ago
Most Expensive
Brilliant Earth
18359515A · Oct 21
$4,222 NZD
$2,380 USD
View
Price last confirmed 14 days ago
23 more retailers have this diamond
Prices start from $497 NZDSave up to $1,907 NZD

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
$497 NZD