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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 $509 NZD
$287 USD
As of October 30, 2026
Save $2,040 NZD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,550 NZD 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 $509 to $2,550, a $2,040 spread on the same certified stone. Blue Nile lists it at $2,550. 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: $2,550 NZD|Low: $406 NZD|High: $2,562 NZD|Avg: $1,226 NZD
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$509 NZD
Retailer 10$571 NZD
Retailer 9$591 NZD
Retailer 8$632 NZD
Retailer 4$704 NZD
Retailer 12$896 NZD
Retailer 2$975 NZD
Retailer 11$1,075 NZD
Retailer 6$1,620 NZD
Retailer 3$2,118 NZD
Retailer 5$2,544 NZD
Blue Nile$2,550 NZD

42 data points across 12 retailers

12 retailers$509 NZD to $2,550 NZD

A
Cheapest Retailer
-
$509 NZD
$287 USD
A
Retailer 2
-
$571 NZD
$322 USD
View
Final sale: no returns
A
Retailer 3
-
$591 NZD
$333 USD
View
A
Retailer 4
-
$632 NZD
$356 USD
View
A
Retailer 5
-
$704 NZD
HK$3,100 HKD
View
A
Retailer 6
-
$896 NZD
$505 USD
View
A
Retailer 7
-
$975 NZD
£433 GBP
View
B+
Retailer 8
-
$1,075 NZD
$606 USD
View
B
Retailer 9
-
$1,620 NZD
$913 USD
View
B
Retailer 10
-
$2,118 NZD
$1,194 USD
View
B
Retailer 11
-
$2,544 NZD
£1,129 GBP
View
Most Expensive
B
Blue Nile
25491067 · Oct 31
$2,550 NZD
$1,437 USD
View
11 more retailers have this diamond
Prices start from $509 NZDSave up to $2,040 NZD

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
$509 NZD