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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 $388 USD
As of November 2, 2026
Save $1,639 USD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,027 USD at Riddles Jewelry · As of November 2, 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 2, 2026, with prices from $388 to $2,027, a $1,639 spread on the same certified stone. Riddles Jewelry lists it at $2,027. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $1,410 USD|Low: $343 USD|High: $2,027 USD|Avg: $1,175 USD|+9.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Riddles Jewelry
November 2, 2026
Retailer 8$388 USD
Retailer 4$434 USD
Retailer 7$481 USD
Retailer 10$710 USD
Retailer 6$821 USD
Retailer 1$1,410 USD
Retailer 5$1,462 USD
Retailer 9$1,706 USD
Retailer 2$1,849 USD
Retailer 3$1,949 USD
Riddles Jewelry$2,027 USD

32 data points across 11 retailers

11 retailers$388 USD to $2,027 USD

A
Cheapest Retailer
-
$388 USD
A
Retailer 2
-
$434 USD
View
A
Retailer 3
-
$481 USD
View
B+
Retailer 4
-
$710 USD
View
A
Retailer 5
-
$821 USD
View
B+
Retailer 6
-
$1,410 USD
£1,110 GBP
View
B+
Retailer 7
-
$1,462 USD
CA$2,030 CAD
View
B+
Retailer 8
-
$1,706 USD
View
B+
Retailer 9
-
$1,849 USD
View
B+
Retailer 10
-
$1,949 USD
£1,535 GBP
View
Most Expensive
B
Riddles Jewelry
1966654647 · Nov 2
$2,027 USD
View
10 more retailers have this diamond
Prices start from $388 USDSave up to $1,639 USD

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
$388 USD