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Radiant|Lab Grown|IGI

1.51ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG483125563

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG483125563

Diamond specifications and retailer prices

From $3,361 AUD
$2,309 USD
As of November 6, 2026
9 retailers carry this diamond
Most expensive: $3,361 AUD at B2C Jewels
View at B2C Jewels

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG483125563 or 483125563. Listed at 9 retailers as of November 6, 2026. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle51.8°
Pavilion angle31.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG483125563
Dimensions6.69 × 5.79 × 4.09 mm
L/W Ratio1.16
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.69 mm5.79 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG483125563
Side View
Table 67.5%Crown 51.8°Girdle: Slightly ThickPavilion 31.2°Culet: NoneDepth 70.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $3,361 AUD|Low: $202 AUD|High: $3,361 AUD|Avg: $1,248 AUD
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 5$256 AUD
Retailer 8$287 AUD
Retailer 7$565 AUD
Retailer 11$616 AUD
Retailer 10$684 AUD
Retailer 3$895 AUD
Retailer 4$1,080 AUD
Retailer 6$1,557 AUD
Retailer 2$1,648 AUD
Retailer 9$2,460 AUD
B2C Jewels$3,361 AUD

13 data points across 11 retailers

9 retailers

Retailer 1
-
$256 AUD
Price last confirmed 11 days ago
Retailer 2
-
$297 AUD
View
Price last confirmed 10 days ago
Retailer 3
-
$565 AUD
View
Price last confirmed 10 days ago
Retailer 4
-
$1,080 AUD
View
Price last confirmed 12 days ago
Retailer 5
-
$1,128 AUD
View
Price last confirmed 10 days ago
Retailer 6
-
$1,557 AUD
View
Price last confirmed 9 days ago
Retailer 7
-
$1,648 AUD
View
Price last confirmed 9 days ago
Retailer 8
-
$2,460 AUD
View
Price last confirmed 9 days ago
Most Expensive
B
B2C Jewels
20033671 · Nov 6
$3,361 AUD
$2,309 USD
View
8 more retailers have this diamond

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.

B
1.51ct Radiant
$3,361 AUD