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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 $581 NZD
As of November 6, 2026
Save $3,090 NZD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,671 NZD 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 $581 to $3,671, a $3,090 spread on the same certified stone. Rare Carat lists it at $3,671. 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

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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 6
Current: $3,671 NZD|Low: $581 NZD|High: $9,146 NZD|Avg: $2,420 NZD|-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$581 NZD
Retailer 14$675 NZD
Retailer 4$722 NZD
Retailer 6$808 NZD
Retailer 11$877 NZD
Retailer 2$1,001 NZD
Retailer 17$1,169 NZD
Retailer 10$1,174 NZD
Retailer 12$1,274 NZD
Retailer 16$1,295 NZD
Retailer 3$1,757 NZD
Retailer 15$2,114 NZD
Retailer 5$2,318 NZD
Retailer 13$2,881 NZD
Rare Carat$3,671 NZD
Retailer 8$6,895 NZD
Retailer 9$9,146 NZD

12 data points across 17 retailers

16 retailers$581 NZD to $3,671 NZD

A
Cheapest Retailer
-
$581 NZD
A
Retailer 2
-
$675 NZD
View
A
Retailer 3
-
$722 NZD
View
A
Retailer 4
-
$808 NZD
View
A
Retailer 5
-
$877 NZD
View
A
Retailer 6
-
$1,001 NZD
View
B+
Retailer 7
-
$1,169 NZD
View
A
Retailer 8
-
$1,174 NZD
View
A
Retailer 9
-
$1,274 NZD
View
A
Retailer 10
-
$1,295 NZD
View
A
Retailer 11
-
$1,757 NZD
View
B+
Retailer 12
-
$2,114 NZD
View
B+
Retailer 13
-
$2,318 NZD
View
B+
Retailer 14
-
$2,881 NZD
View
B+
Retailer 15
-
$2,942 NZD
View
Most Expensive
B
Rare Carat
KI2585902KF685 · Nov 1
$3,671 NZD
$2,035 USD
View
15 more retailers have this diamond
Prices start from $581 NZDSave up to $3,090 NZD

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
$581 NZD