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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 $287 USD
As of October 30, 2026
Save $1,150 USD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,437 USD at Blue Nile · As of October 29, 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 29, 2026, with prices from $287 to $1,437, a $1,150 spread on the same certified stone. Blue Nile lists it at $1,437. 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: $1,437 USD|Low: $229 USD|High: $1,444 USD|Avg: $690 USD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 7$287 USD
Retailer 10$322 USD
Retailer 9$333 USD
Retailer 8$356 USD
Retailer 4$397 USD
Retailer 12$505 USD
Retailer 2$554 USD
Retailer 11$606 USD
Retailer 6$913 USD
Retailer 3$1,194 USD
Retailer 5$1,434 USD
Blue Nile$1,437 USD

42 data points across 12 retailers

12 retailers$287 USD to $1,437 USD

A
Cheapest Retailer
-
$287 USD
A
Retailer 2
-
$322 USD
View
Final sale: no returns
A
Retailer 3
-
$333 USD
View
A
Retailer 4
-
$356 USD
View
A
Retailer 5
-
$397 USD
HK$3,100 HKD
View
A
Retailer 6
-
$505 USD
View
A
Retailer 7
-
$554 USD
£436 GBP
View
B+
Retailer 8
-
$606 USD
View
B
Retailer 9
-
$913 USD
View
B
Retailer 10
-
$1,194 USD
View
B
Retailer 11
-
$1,434 USD
£1,129 GBP
View
Most Expensive
B
Blue Nile
25491067 · Oct 29
$1,437 USD
View
11 more retailers have this diamond
Prices start from $287 USDSave up to $1,150 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
1.63ct Radiant
$287 USD