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Radiant|Lab Grown|GCAL

3.03ct H SI1 Radiant Lab Grown Diamond

EX • H/SI1 • GCAL 323000128

Shape and cutting style on the report: Radiant brilliant

Certificate GCAL 323000128

Diamond specifications and retailer prices

From €348 EUR
As of November 6, 2026
Save €1,468 EUR (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €1,816 EUR at Riddles Jewelry · As of November 6, 2026
View at Riddles Jewelry

About this 3.03ct lab-grown radiant diamond

This 3.03ct lab-grown radiant sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 323000128. Listed at 11 retailers as of November 6, 2026, with prices from €348 to €1,816, a €1,468 spread on the same certified stone. Riddles Jewelry lists it at €1,816. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.5°
Pavilion angle56.8°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 323000128
Dimensions9.86 × 6.99 × 4.88 mm
L/W Ratio1.41
Culet sizeNone
Top View
9.86 mm6.99 mm3.03 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGCAL 323000128
Side View
Table 61.0%Crown 40.5°Girdle: THK-VTKPavilion 56.8°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €1,258 EUR|Low: €307 EUR|High: €1,816 EUR|Avg: €1,051 EUR|+7.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Riddles Jewelry
November 6, 2026
Retailer 8€348 EUR
Retailer 4€389 EUR
Retailer 7€431 EUR
Retailer 10€636 EUR
Retailer 6€735 EUR
Retailer 1€1,258 EUR
Retailer 5€1,309 EUR
Retailer 9€1,528 EUR
Retailer 2€1,656 EUR
Retailer 3€1,741 EUR
Riddles Jewelry€1,816 EUR

33 data points across 11 retailers

11 retailers€348 EUR to €1,816 EUR

A
Cheapest Retailer
-
€348 EUR
A
Retailer 2
-
€389 EUR
View
A
Retailer 3
-
€431 EUR
View
B+
Retailer 4
-
€636 EUR
View
A
Retailer 5
-
€735 EUR
View
B+
Retailer 6
-
€1,258 EUR
View
B+
Retailer 7
-
€1,309 EUR
View
B+
Retailer 8
-
€1,528 EUR
View
B+
Retailer 9
-
€1,656 EUR
View
B+
Retailer 10
-
€1,741 EUR
View
Most Expensive
B
Riddles Jewelry
1966654647 · Nov 6
€1,816 EUR
$2,027 USD
View
10 more retailers have this diamond
Prices start from €348 EURSave up to €1,468 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
€348 EUR