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Radiant|Lab Grown|IGI

1.64ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG546205676

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

Certificate IGI LG546205676

Diamond specifications and retailer prices

From €139 EUR
$155 USD
As of October 27, 2026
Save €1,195 EUR (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €1,334 EUR at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG546205676 or 546205676. Listed at 10 retailers as of October 27, 2026, with prices from €139 to €1,334, a €1,195 spread on the same certified stone. Do Amore Diamonds lists it at €1,334. 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

1.64
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG546205676
Dimensions8.14 × 5.75 × 3.99 mm
L/W Ratio1.42
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.14 mm5.75 mm1.64 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG546205676
Side View
Table 61.0%Crown 42.9°Girdle: MED-STKPavilion 34.9°Culet: NoneDepth 69.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: €1,334 EUR|Low: €139 EUR|High: €1,414 EUR|Avg: €616 EUR|-5.7%
Do Amore Diamonds
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
October 29, 2026
Retailer 9€139 EUR
Retailer 7€161 EUR
Retailer 14€165 EUR
Retailer 11€314 EUR
Retailer 3€370 EUR
Retailer 6€457 EUR
Retailer 4€547 EUR
Retailer 8€586 EUR
Retailer 10€612 EUR
Retailer 12€640 EUR
Retailer 5€828 EUR
Retailer 2€896 EUR
Retailer 13€940 EUR
Do Amore Diamonds€1,334 EUR

21 data points across 14 retailers

10 retailers€139 EUR to €1,334 EUR

A
Cheapest Retailer
-
€139 EUR
$155 USD
A
Retailer 2
-
€161 EUR
$180 USD
View
A
Retailer 3
-
€165 EUR
$184 USD
View
Final sale: no returns
B+
Retailer 4
-
€314 EUR
$351 USD
View
B+
Retailer 5
-
€586 EUR
$655 USD
View
B+
Retailer 6
-
€612 EUR
$684 USD
View
B+
Retailer 7
-
€640 EUR
$715 USD
View
B+
Retailer 8
-
€896 EUR
£788 GBP
View
B
Retailer 9
-
€940 EUR
$1,050 USD
View
Most Expensive
B
Do Amore Diamonds
27-102D9F72E · Oct 30
€1,334 EUR
$1,490 USD
View
9 more retailers have this diamond
Prices start from €139 EURSave up to €1,195 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
€139 EUR