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Round|Lab Grown|IGI

1.51ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG407948755

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407948755

Diamond specifications and retailer prices

From $1,246 AUD
As of November 5, 2026
Save $4,155 AUD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,401 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407948755 or 407948755. Listed at 9 retailers as of November 5, 2026, with prices from $1,246 to $5,401, a $4,155 spread on the same certified stone. MOH London lists it at $5,401. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407948755
Dimensions7.36 × 7.40 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.36 mm7.40 mm1.51 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407948755
Side View
Table 57.0%Crown 33.6°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 60.5%

Caratlytics Score

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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: $5,401 AUD|Low: $1,196 AUD|High: $5,481 AUD|Avg: $2,467 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$1,246 AUD
Retailer 5$1,444 AUD
Retailer 7$1,444 AUD
Retailer 2$1,581 AUD
Retailer 6$2,323 AUD
Retailer 3$3,321 AUD
MOH London$5,401 AUD

38 data points across 7 retailers

9 retailers$1,246 AUD to $5,401 AUD

A
Cheapest Retailer
-
$1,246 AUD
B+
Retailer 2
-
$1,356 AUD
View
B+
Retailer 3
-
$1,444 AUD
View
Retailer 4
-
$1,444 AUD
View
Price last confirmed 25 days ago
A
Retailer 5
-
$1,581 AUD
View
B
Retailer 6
-
$2,323 AUD
View
B
Retailer 7
-
$3,321 AUD
View
B
Retailer 8
-
$4,063 AUD
View
Most Expensive
B
MOH London
LG407948755 · Nov 5
$5,401 AUD
£2,977 GBP
View
8 more retailers have this diamond
Prices start from $1,246 AUDSave up to $4,155 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 Round
$1,246 AUD