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Oval|Lab Grown|IGI

1.23ct K SI1 Oval Lab Grown Diamond

ID • K/SI1 • IGI LG447099065

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447099065

Diamond specifications and retailer prices

From $855 NZD
As of November 5, 2026
Save $3,026 NZD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,881 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.23ct lab-grown oval diamond

This 1.23ct lab-grown oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447099065 or 447099065. Listed at 10 retailers as of November 5, 2026, with prices from $855 to $3,881, a $3,026 spread on the same certified stone. MOH London lists it at $3,881. 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
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447099065
Dimensions8.99 × 5.97 × 3.62 mm
L/W Ratio1.51
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.99 mm5.97 mm1.23 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447099065
Side View
Table 57.5%Crown 34°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 60.6%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $3,881 NZD|Low: $855 NZD|High: $3,938 NZD|Avg: $2,126 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$855 NZD
Retailer 6$1,059 NZD
Retailer 3$1,317 NZD
Retailer 2$1,582 NZD
Retailer 7$1,654 NZD
Retailer 8$2,838 NZD
Retailer 4$2,848 NZD
MOH London$3,881 NZD

24 data points across 8 retailers

10 retailers$855 NZD to $3,881 NZD

A
Cheapest Retailer
-
$855 NZD
A
Retailer 2
-
$956 NZD
View
Retailer 3
-
$1,059 NZD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
$1,059 NZD
View
B+
Retailer 5
-
$1,317 NZD
View
B+
Retailer 6
-
$1,582 NZD
View
B+
Retailer 7
-
$1,654 NZD
View
B
Retailer 8
-
$2,848 NZD
View
B
Retailer 9
-
$3,406 NZD
View
Most Expensive
B
MOH London
LG447099065 · Nov 5
$3,881 NZD
£1,694 GBP
View
9 more retailers have this diamond
Prices start from $855 NZDSave up to $3,026 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 Oval
$855 NZD