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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 $690 AUD
As of November 5, 2026
Save $2,441 AUD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,131 AUD 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 $690 to $3,131, a $2,441 spread on the same certified stone. MOH London lists it at $3,131. 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: $3,131 AUD|Low: $690 AUD|High: $3,177 AUD|Avg: $1,715 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$690 AUD
Retailer 6$854 AUD
Retailer 3$1,062 AUD
Retailer 2$1,276 AUD
Retailer 7$1,335 AUD
Retailer 8$2,289 AUD
Retailer 4$2,298 AUD
MOH London$3,131 AUD

24 data points across 8 retailers

10 retailers$690 AUD to $3,131 AUD

A
Cheapest Retailer
-
$690 AUD
A
Retailer 2
-
$771 AUD
View
Retailer 3
-
$854 AUD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
$854 AUD
View
B+
Retailer 5
-
$1,062 AUD
View
B+
Retailer 6
-
$1,276 AUD
View
B+
Retailer 7
-
$1,335 AUD
View
B
Retailer 8
-
$2,298 AUD
View
B
Retailer 9
-
$2,748 AUD
View
Most Expensive
B
MOH London
LG447099065 · Nov 5
$3,131 AUD
£1,694 GBP
View
9 more retailers have this diamond
Prices start from $690 AUDSave up to $2,441 AUD

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
$690 AUD