Radiant|Lab Grown|IGI

1.64ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG705509687

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG705509687

Diamond specifications and retailer prices

From €311 EUR
$347 USD
As of November 1, 2026
Save €2,697 EUR (90%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: €3,527 EUR at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG705509687 or 705509687. Listed at 28 retailers as of October 31, 2026, with a 868% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG705509687
Dimensions8.89 × 5.91 × 3.77 mm
L/W Ratio1.50
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.89 mm5.91 mm1.64 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG705509687
Side View
Table 60.0%Crown 38.7°Girdle: MediumPavilion 33.1°Culet: NoneDepth 63.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €3,008 EUR|Low: €306 EUR|High: €3,697 EUR|Avg: €1,147 EUR|-18.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 1, 2026
Retailer 12€306 EUR
Retailer 7€311 EUR
Retailer 10€355 EUR
Retailer 16€380 EUR
Retailer 6€481 EUR
Retailer 22€483 EUR
Retailer 13€500 EUR
Retailer 23€580 EUR
Retailer 11€634 EUR
Retailer 21€653 EUR
Retailer 18€682 EUR
Retailer 5€823 EUR
Retailer 19€881 EUR
Retailer 3€1,057 EUR
Retailer 14€1,221 EUR
Retailer 17€1,259 EUR
Retailer 4€1,322 EUR
Retailer 8€1,378 EUR
Retailer 9€1,395 EUR
Retailer 15€1,473 EUR
Retailer 2€1,522 EUR
Retailer 24€2,461 EUR
Retailer 20€2,479 EUR
Brilliant Earth€3,008 EUR

33 data points across 24 retailers

28 retailers€311 EUR to €3,008 EUR

Retailer 1
-
€306 EUR
$342 USD
Price last confirmed 11 days ago
A
Retailer 2
-
€311 EUR
$347 USD
View
Final sale: no returns
Retailer 3
-
€355 EUR
$397 USD
View
Price last confirmed 12 days ago
Retailer 4
-
€380 EUR
$424 USD
View
Price last confirmed 16 days ago
Retailer 5
-
€380 EUR
$424 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
€481 EUR
HK$4,200 HKD
View
A
Retailer 7
-
€483 EUR
$540 USD
View
A
Retailer 8
-
€500 EUR
$559 USD
View
A
Retailer 9
-
€580 EUR
$648 USD
View
Retailer 10
-
€634 EUR
View
Price last confirmed 9 days ago
A
Retailer 11
-
€653 EUR
ZAR 11,779 ZAR
View
A
Retailer 12
-
€682 EUR
£600 GBP
View
A
Retailer 13
-
€823 EUR
$919 USD
View
A
Retailer 14
-
€881 EUR
A$1,515 AUD
View
B+
Retailer 15
-
€1,057 EUR
$1,181 USD
View
Retailer 16
-
€1,221 EUR
$1,364 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
€1,259 EUR
$1,407 USD
View
B+
Retailer 18
-
€1,297 EUR
$1,449 USD
View
B+
Retailer 19
-
€1,322 EUR
$1,477 USD
View
B+
Retailer 20
-
€1,378 EUR
$1,540 USD
View
B+
Retailer 21
-
€1,395 EUR
SGD 2,106 SGD
View
Retailer 22
-
€1,473 EUR
£1,296 GBP
View
Price last confirmed 11 days ago
B+
Retailer 23
-
€1,522 EUR
£1,339 GBP
View
B
Retailer 24
-
€2,461 EUR
$2,750 USD
View
B
Retailer 25
-
€2,479 EUR
$2,770 USD
View
B
Retailer 26
-
€2,705 EUR
£2,380 GBP
View
B
Retailer 27
-
€3,008 EUR
$3,360 USD
View
Most Expensive
Brilliant Earth
14166265A · Oct 24
€3,527 EUR
$3,940 USD
View
Price last confirmed 8 days ago
27 more retailers have this diamond
Prices start from €311 EURSave up to €2,697 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
€311 EUR