CaratHunter
Plans
Round|Lab Grown|IGI

1.23ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG729575214

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729575214

Diamond specifications and retailer prices

From $285 NZD
As of November 5, 2026
Save $1,365 NZD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,649 NZD at MOH London · As of November 1, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG729575214 or 729575214. Listed at 17 retailers as of November 1, 2026, with prices from $285 to $1,649, a $1,365 spread on the same certified stone. MOH London lists it at $1,649. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.23
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729575214
Dimensions6.88 × 6.85 × 4.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.88 mm6.85 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729575214
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.7%

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 5
Current: $1,649 NZD|Low: $270 NZD|High: $1,658 NZD|Avg: $759 NZD|+1.2%
MOH London
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
November 6, 2026
Retailer 4$285 NZD
Retailer 3$317 NZD
Retailer 13$329 NZD
Retailer 15$352 NZD
Retailer 16$352 NZD
Retailer 2$608 NZD
Retailer 11$615 NZD
Retailer 8$639 NZD
Retailer 14$676 NZD
Retailer 10$792 NZD
Retailer 12$829 NZD
Retailer 7$932 NZD
Retailer 9$1,014 NZD
Retailer 5$1,133 NZD
Retailer 17$1,197 NZD
Retailer 6$1,231 NZD
MOH London$1,649 NZD

46 data points across 17 retailers

17 retailers$285 NZD to $1,649 NZD

A
Cheapest Retailer
-
$285 NZD
A
Retailer 2
-
$317 NZD
View
Final sale: no returns
A
Retailer 3
-
$329 NZD
View
Retailer 4
-
$352 NZD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$352 NZD
View
A
Retailer 6
-
$608 NZD
View
A
Retailer 7
-
$615 NZD
View
B+
Retailer 8
-
$639 NZD
View
A
Retailer 9
-
$676 NZD
View
B+
Retailer 10
-
$792 NZD
View
B+
Retailer 11
-
$829 NZD
View
B+
Retailer 12
-
$932 NZD
View
B+
Retailer 13
-
$1,014 NZD
View
B
Retailer 14
-
$1,133 NZD
View
B
Retailer 15
-
$1,197 NZD
View
B
Retailer 16
-
$1,231 NZD
View
Most Expensive
B
MOH London
LG729575214 · Nov 1
$1,649 NZD
£730 GBP
View
16 more retailers have this diamond
Prices start from $285 NZDSave up to $1,365 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
$285 NZD