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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 $409 AUD
$287 USD
As of October 30, 2026
Save $1,637 AUD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,046 AUD 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 $409 to $2,046, a $1,637 spread on the same certified stone. Blue Nile lists it at $2,046. 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: $2,046 AUD|Low: $326 AUD|High: $2,056 AUD|Avg: $982 AUD
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$409 AUD
Retailer 10$458 AUD
Retailer 9$474 AUD
Retailer 8$507 AUD
Retailer 4$565 AUD
Retailer 12$719 AUD
Retailer 2$783 AUD
Retailer 11$863 AUD
Retailer 6$1,300 AUD
Retailer 3$1,699 AUD
Retailer 5$2,041 AUD
Blue Nile$2,046 AUD

43 data points across 12 retailers

12 retailers$409 AUD to $2,046 AUD

A
Cheapest Retailer
-
$409 AUD
$287 USD
A
Retailer 2
-
$458 AUD
$322 USD
View
Final sale: no returns
A
Retailer 3
-
$474 AUD
$333 USD
View
A
Retailer 4
-
$507 AUD
$356 USD
View
A
Retailer 5
-
$565 AUD
HK$3,100 HKD
View
A
Retailer 6
-
$719 AUD
$505 USD
View
A
Retailer 7
-
$783 AUD
£433 GBP
View
B+
Retailer 8
-
$863 AUD
$606 USD
View
B
Retailer 9
-
$1,300 AUD
$913 USD
View
B
Retailer 10
-
$1,699 AUD
$1,194 USD
View
B
Retailer 11
-
$2,041 AUD
£1,129 GBP
View
Most Expensive
B
Blue Nile
25491067 · Oct 31
$2,046 AUD
$1,437 USD
View
11 more retailers have this diamond
Prices start from $409 AUDSave up to $1,637 AUD

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
$409 AUD