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Radiant|Lab Grown|IGI

3.03ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG685590258

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

Certificate IGI LG685590258

Diamond specifications and retailer prices

From $469 AUD
As of November 6, 2026
Save $2,493 AUD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,962 AUD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 3.03ct lab-grown radiant diamond

This 3.03ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685590258 or 685590258. Listed at 16 retailers as of November 1, 2026, with prices from $469 to $2,962, a $2,493 spread on the same certified stone. Rare Carat lists it at $2,962. 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

3.03
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685590258
Dimensions10.36 × 7.04 × 4.81 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.36 mm7.04 mm3.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685590258
Side View
Table 64.0%Crown 45.5°Girdle: MediumPavilion 35.7°Culet: NoneDepth 68.3%

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 6
Current: $2,962 AUD|Low: $469 AUD|High: $7,379 AUD|Avg: $1,953 AUD|-30.4%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 7, 2026
Retailer 7$469 AUD
Retailer 14$544 AUD
Retailer 4$582 AUD
Retailer 6$652 AUD
Retailer 11$707 AUD
Retailer 2$808 AUD
Retailer 17$943 AUD
Retailer 10$947 AUD
Retailer 12$1,028 AUD
Retailer 16$1,045 AUD
Retailer 3$1,418 AUD
Retailer 15$1,706 AUD
Retailer 5$1,870 AUD
Retailer 13$2,324 AUD
Rare Carat$2,962 AUD
Retailer 8$5,563 AUD
Retailer 9$7,379 AUD

12 data points across 17 retailers

16 retailers$469 AUD to $2,962 AUD

A
Cheapest Retailer
-
$469 AUD
A
Retailer 2
-
$544 AUD
View
A
Retailer 3
-
$582 AUD
View
A
Retailer 4
-
$652 AUD
View
A
Retailer 5
-
$707 AUD
View
A
Retailer 6
-
$808 AUD
View
B+
Retailer 7
-
$943 AUD
View
A
Retailer 8
-
$947 AUD
View
A
Retailer 9
-
$1,028 AUD
View
A
Retailer 10
-
$1,045 AUD
View
A
Retailer 11
-
$1,418 AUD
View
B+
Retailer 12
-
$1,706 AUD
View
B+
Retailer 13
-
$1,870 AUD
View
B+
Retailer 14
-
$2,324 AUD
View
B+
Retailer 15
-
$2,374 AUD
View
Most Expensive
B
Rare Carat
KI2585902KF685 · Nov 1
$2,962 AUD
$2,035 USD
View
15 more retailers have this diamond
Prices start from $469 AUDSave up to $2,493 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
3.03ct Radiant
$469 AUD