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Oval|Lab Grown|IGI

1.51ct K SI1 Oval Lab Grown Diamond

ID • K/SI1 • IGI LG445039057

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445039057

Diamond specifications and retailer prices

From $1,335 AUD
As of November 5, 2026
Save $3,902 AUD (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,236 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445039057 or 445039057. Listed at 10 retailers as of November 5, 2026, with prices from $1,335 to $5,236, a $3,902 spread on the same certified stone. MOH London lists it at $5,236. 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

1.51
Carat
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445039057
Dimensions9.23 × 6.70 × 3.94 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.23 mm6.70 mm1.51 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG445039057
Side View
Table 59.0%Crown 32.9°Girdle: THN-STKPavilion 40.5°Culet: NoneDepth 58.8%

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: $5,236 AUD|Low: $1,281 AUD|High: $5,320 AUD|Avg: $2,709 AUD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$1,335 AUD
Retailer 9$1,452 AUD
Retailer 6$1,549 AUD
Retailer 3$1,805 AUD
Retailer 2$2,151 AUD
Retailer 10$2,288 AUD
Retailer 7$2,480 AUD
Retailer 4$3,443 AUD
Retailer 8$4,352 AUD
MOH London$5,236 AUD

28 data points across 10 retailers

10 retailers$1,335 AUD to $5,236 AUD

A
Cheapest Retailer
-
$1,335 AUD
A
Retailer 2
-
$1,452 AUD
View
Retailer 3
-
$1,549 AUD
View
Price last confirmed 25 days ago
A
Retailer 4
-
$1,549 AUD
View
B+
Retailer 5
-
$1,805 AUD
View
B+
Retailer 6
-
$2,151 AUD
View
B+
Retailer 7
-
$2,480 AUD
View
B
Retailer 8
-
$3,443 AUD
View
B
Retailer 9
-
$4,352 AUD
View
Most Expensive
B
MOH London
LG445039057 · Nov 5
$5,236 AUD
£2,833 GBP
View
9 more retailers have this diamond
Prices start from $1,335 AUDSave up to $3,902 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
1.51ct Oval
$1,335 AUD