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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 $367 SGD
$287 USD
As of October 30, 2026
Save $1,470 SGD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,837 SGD 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 $367 to $1,837, a $1,470 spread on the same certified stone. Blue Nile lists it at $1,837. 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
Colour
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: $1,837 SGD|Low: $293 SGD|High: $1,846 SGD|Avg: $882 SGD
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 31, 2026
Retailer 7$367 SGD
Retailer 10$412 SGD
Retailer 9$426 SGD
Retailer 8$455 SGD
Retailer 4$507 SGD
Retailer 12$646 SGD
Retailer 2$703 SGD
Retailer 11$775 SGD
Retailer 6$1,167 SGD
Retailer 3$1,526 SGD
Retailer 5$1,833 SGD
Blue Nile$1,837 SGD

43 data points across 12 retailers

12 retailers$367 SGD to $1,837 SGD

A
Cheapest Retailer
-
$367 SGD
$287 USD
A
Retailer 2
-
$412 SGD
$322 USD
View
Final sale: no returns
A
Retailer 3
-
$426 SGD
$333 USD
View
A
Retailer 4
-
$455 SGD
$356 USD
View
A
Retailer 5
-
$507 SGD
HK$3,100 HKD
View
A
Retailer 6
-
$646 SGD
$505 USD
View
A
Retailer 7
-
$703 SGD
£433 GBP
View
B+
Retailer 8
-
$775 SGD
$606 USD
View
B
Retailer 9
-
$1,167 SGD
$913 USD
View
B
Retailer 10
-
$1,526 SGD
$1,194 USD
View
B
Retailer 11
-
$1,833 SGD
£1,129 GBP
View
Most Expensive
B
Blue Nile
25491067 · Oct 31
$1,837 SGD
$1,437 USD
View
11 more retailers have this diamond
Prices start from $367 SGDSave up to $1,470 SGD

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
$367 SGD