CaratHunter
Plans
Round|Lab Grown|IGI

1.23ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG691548634

Shape and cutting style on the report: Round brilliant

Certificate IGI LG691548634

Diamond specifications and retailer prices

From $527 NZD
As of November 5, 2026
Save $1,328 NZD (72%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,855 NZD at MOH London · As of November 5, 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 LG691548634 or 691548634. Listed at 6 retailers as of November 5, 2026, with prices from $527 to $1,855, a $1,328 spread on the same certified stone. MOH London lists it at $1,855. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691548634
Dimensions6.86 × 6.81 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.86 mm6.81 mm1.23 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691548634
Side View
Table 59.0%Crown 34.4°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.2%

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: $1,855 NZD|Low: $527 NZD|High: $1,882 NZD|Avg: $868 NZD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$527 NZD
Retailer 4$651 NZD
Retailer 2$706 NZD
Retailer 3$792 NZD
Retailer 5$806 NZD
MOH London$1,855 NZD

42 data points across 6 retailers

6 retailers$527 NZD to $1,855 NZD

A
Cheapest Retailer
-
$527 NZD
B+
Retailer 2
-
$651 NZD
View
B+
Retailer 3
-
$706 NZD
View
B+
Retailer 4
-
$792 NZD
View
B+
Retailer 5
-
$806 NZD
View
Most Expensive
B
MOH London
LG691548634 · Nov 5
$1,855 NZD
£821 GBP
View
5 more retailers have this diamond
Prices start from $527 NZDSave up to $1,328 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
$527 NZD