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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 €432 EUR
$485 USD
As of November 2, 2026
Save €2,676 EUR (86%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €3,108 EUR 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 €432 to €3,108, a €2,676 spread on the same certified stone. Blue Nile lists it at €3,108. 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: €3,108 EUR|Low: €432 EUR|High: €4,012 EUR|Avg: €1,782 EUR|+4.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 2€432 EUR
Retailer 5€484 EUR
Retailer 3€753 EUR
Retailer 4€1,557 EUR
Blue Nile€3,108 EUR
Retailer 6€4,012 EUR

9 data points across 6 retailers

5 retailers€432 EUR to €3,108 EUR

A
Cheapest Retailer
-
€432 EUR
$485 USD
A
Retailer 2
-
€484 EUR
$543 USD
View
A
Retailer 3
-
€753 EUR
$845 USD
View
B
Retailer 4
-
€1,557 EUR
$1,746 USD
View
Most Expensive
B
Blue Nile
30353645 · Nov 3
€3,108 EUR
$3,486 USD
View
4 more retailers have this diamond
Prices start from €432 EURSave up to €2,676 EUR

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
€432 EUR