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Round|Lab Grown|IGI

1.23ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG447099955

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447099955

Diamond specifications and retailer prices

From $961 NZD
As of November 5, 2026
Save $7,279 NZD (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,239 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447099955 or 447099955. Listed at 13 retailers as of November 5, 2026, with prices from $961 to $8,239, a $7,279 spread on the same certified stone. MOH London lists it at $8,239. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447099955
Dimensions6.86 × 6.93 × 4.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.86 mm6.93 mm1.23 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447099955
Side View
Table 59.0%Crown 33.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.2%

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: $8,239 NZD|Low: $961 NZD|High: $8,370 NZD|Avg: $3,800 NZD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6$961 NZD
Retailer 5$2,494 NZD
Retailer 11$2,713 NZD
Retailer 10$2,793 NZD
Retailer 7$2,892 NZD
Retailer 9$2,892 NZD
Retailer 2$3,764 NZD
Retailer 8$4,565 NZD
Retailer 4$4,940 NZD
Retailer 3$5,422 NZD
MOH London$8,239 NZD

44 data points across 11 retailers

13 retailers$961 NZD to $8,239 NZD

A
Cheapest Retailer
-
$961 NZD
B+
Retailer 2
-
$2,494 NZD
View
B+
Retailer 3
-
$2,713 NZD
View
B+
Retailer 4
-
$2,793 NZD
View
Final sale: no returns
B+
Retailer 5
-
$2,892 NZD
View
Retailer 6
-
$2,892 NZD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$3,193 NZD
View
B+
Retailer 8
-
$3,764 NZD
View
B
Retailer 9
-
$4,565 NZD
View
Retailer 10
-
$4,940 NZD
View
Price last confirmed 8 days ago
B
Retailer 11
-
$5,250 NZD
View
B
Retailer 12
-
$5,422 NZD
View
Most Expensive
B
MOH London
LG447099955 · Nov 5
$8,239 NZD
£3,647 GBP
View
12 more retailers have this diamond
Prices start from $961 NZDSave up to $7,279 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
$961 NZD