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Round|Lab Grown|IGI

1.23ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG660459286

Certificate IGI LG660459286

Diamond specifications and retailer prices

From $1,021 NZD
As of November 5, 2026
Save $1,363 NZD (57%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,384 NZD at Jared · As of November 4, 2026
View at Jared

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 LG660459286 or 660459286. Listed at 4 retailers as of November 4, 2026, with prices from $1,021 to $2,384, a $1,363 spread on the same certified stone. Jared lists it at $2,384. 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
OriginLab Grown
Grading LabIGI
CertificateIGI LG660459286
Dimensions6.89 × 6.94 × 4.22 mm
L/W Ratio1.01
Top View
6.89 mm6.94 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660459286
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.0%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $2,384 NZD|Low: $1,021 NZD|High: $2,384 NZD|Avg: $1,793 NZD
Jared
Retailer 2
Retailer 3
Retailer 4
September 26, 2026
Retailer 2$1,021 NZD
Retailer 3$1,441 NZD
Retailer 4$1,441 NZD
Jared$2,384 NZD

6 data points across 4 retailers

4 retailers$1,021 NZD to $2,384 NZD

B+
Cheapest Retailer
-
$1,021 NZD
B
Retailer 2
-
$1,441 NZD
View
B
Retailer 3
-
$1,441 NZD
View
Most Expensive
B
Jared
154541452 · Nov 4
$2,384 NZD
$1,340 USD
View
3 more retailers have this diamond
Prices start from $1,021 NZDSave up to $1,363 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.

B+
1.23ct Round
$1,021 NZD