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Radiant|Lab Grown|IGI

1.64ct D FL Radiant Lab Grown Diamond

VG • D/FL

Diamond specifications and retailer prices

From HK$3,805 HKD
$485 USD
As of November 2, 2026
Save HK$23,546 HKD (86%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$27,352 HKD at Blue Nile · As of November 3, 2026
View at Blue Nile

About this 1.64ct lab-grown radiant diamond

This 1.64ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI. Listed at 5 retailers as of November 2, 2026, with prices from HK$3,805 to HK$27,352, a HK$23,546 spread on the same certified stone. Blue Nile lists it at HK$27,352. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.64
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions8.21 × 5.86 × 3.98 mm
L/W Ratio1.40
Top View
8.21 mm5.86 mm1.64 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 66.0%CrownGirdle: MediumPavilionCulet: NoneDepth 67.9%

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: Nov 2
Current: HK$27,352 HKD|Low: HK$3,805 HKD|High: HK$35,307 HKD|Avg: HK$15,678 HKD|+4.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 2HK$3,805 HKD
Retailer 5HK$4,260 HKD
Retailer 3HK$6,630 HKD
Retailer 4HK$13,699 HKD
Blue NileHK$27,352 HKD
Retailer 6HK$35,307 HKD

9 data points across 6 retailers

5 retailersHK$3,805 HKD to HK$27,352 HKD

A
Cheapest Retailer
-
HK$3,805 HKD
$485 USD
A
Retailer 2
-
HK$4,260 HKD
$543 USD
View
A
Retailer 3
-
HK$6,630 HKD
$845 USD
View
B
Retailer 4
-
HK$13,699 HKD
$1,746 USD
View
Most Expensive
B
Blue Nile
30353645 · Nov 3
HK$27,352 HKD
$3,486 USD
View
4 more retailers have this diamond
Prices start from HK$3,805 HKDSave up to HK$23,546 HKD

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
1.64ct Radiant
HK$3,805 HKD