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Radiant|Lab Grown|GCAL

1.63ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • GCAL 341246020

Shape and cutting style on the report: Radiant brilliant

Certificate GCAL 341246020

Diamond specifications and retailer prices

From €257 EUR
$287 USD
As of October 30, 2026
Save €1,029 EUR (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,286 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.63ct lab-grown radiant diamond

This 1.63ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 341246020. Listed at 12 retailers as of October 30, 2026, with prices from €257 to €1,286, a €1,029 spread on the same certified stone. Blue Nile lists it at €1,286. 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

1.63
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.8°
Pavilion angle34.9°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 341246020
Dimensions8.19 × 5.74 × 3.93 mm
L/W Ratio1.43
Culet sizeNone
Top View
8.19 mm5.74 mm1.63 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 341246020
Side View
Table 65.0%Crown 45.8°Girdle: THK-VTKPavilion 34.9°Culet: NoneDepth 68.5%

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: Oct 30
Current: €1,286 EUR|Low: €205 EUR|High: €1,293 EUR|Avg: €618 EUR
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7€257 EUR
Retailer 10€288 EUR
Retailer 9€298 EUR
Retailer 8€319 EUR
Retailer 4€355 EUR
Retailer 12€452 EUR
Retailer 5€492 EUR
Retailer 11€542 EUR
Retailer 6€817 EUR
Retailer 3€1,068 EUR
Retailer 2€1,277 EUR
Blue Nile€1,286 EUR

43 data points across 12 retailers

12 retailers€257 EUR to €1,286 EUR

A
Cheapest Retailer
-
€257 EUR
$287 USD
A
Retailer 2
-
€288 EUR
$322 USD
View
Final sale: no returns
A
Retailer 3
-
€298 EUR
$333 USD
View
A
Retailer 4
-
€319 EUR
$356 USD
View
A
Retailer 5
-
€355 EUR
HK$3,100 HKD
View
A
Retailer 6
-
€452 EUR
$505 USD
View
A
Retailer 7
-
€492 EUR
£433 GBP
View
B+
Retailer 8
-
€542 EUR
$606 USD
View
B
Retailer 9
-
€817 EUR
$913 USD
View
B
Retailer 10
-
€1,068 EUR
$1,194 USD
View
B
Retailer 11
-
€1,277 EUR
£1,123 GBP
View
Most Expensive
B
Blue Nile
25491067 · Oct 31
€1,286 EUR
$1,437 USD
View
11 more retailers have this diamond
Prices start from €257 EURSave up to €1,029 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
1.63ct Radiant
€257 EUR