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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 €288 EUR
As of November 6, 2026
Save €1,534 EUR (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,823 EUR 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 €288 to €1,823, a €1,534 spread on the same certified stone. Rare Carat lists it at €1,823. 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: €1,823 EUR|Low: €288 EUR|High: €4,541 EUR|Avg: €1,202 EUR|-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€288 EUR
Retailer 14€335 EUR
Retailer 4€358 EUR
Retailer 6€401 EUR
Retailer 11€435 EUR
Retailer 2€497 EUR
Retailer 17€580 EUR
Retailer 10€583 EUR
Retailer 12€632 EUR
Retailer 16€643 EUR
Retailer 3€872 EUR
Retailer 15€1,050 EUR
Retailer 5€1,151 EUR
Retailer 13€1,430 EUR
Rare Carat€1,823 EUR
Retailer 8€3,423 EUR
Retailer 9€4,541 EUR

12 data points across 17 retailers

16 retailers€288 EUR to €1,823 EUR

A
Cheapest Retailer
-
€288 EUR
A
Retailer 2
-
€335 EUR
View
A
Retailer 3
-
€358 EUR
View
A
Retailer 4
-
€401 EUR
View
A
Retailer 5
-
€435 EUR
View
A
Retailer 6
-
€497 EUR
View
B+
Retailer 7
-
€580 EUR
View
A
Retailer 8
-
€583 EUR
View
A
Retailer 9
-
€632 EUR
View
A
Retailer 10
-
€643 EUR
View
A
Retailer 11
-
€872 EUR
View
B+
Retailer 12
-
€1,050 EUR
View
B+
Retailer 13
-
€1,151 EUR
View
B+
Retailer 14
-
€1,430 EUR
View
B+
Retailer 15
-
€1,461 EUR
View
Most Expensive
B
Rare Carat
KI2585902KF685 · Nov 1
€1,823 EUR
$2,035 USD
View
15 more retailers have this diamond
Prices start from €288 EURSave up to €1,534 EUR

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
€288 EUR