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Radiant|Lab Grown|IGI

1.70ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG620454779

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

Certificate IGI LG620454779

Diamond specifications and retailer prices

From €161 EUR
$181 USD
As of October 27, 2026
Save €1,390 EUR (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €1,551 EUR at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.7ct lab-grown radiant diamond

This 1.7ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG620454779 or 620454779. Listed at 9 retailers as of October 27, 2026, with prices from €161 to €1,551, a €1,390 spread on the same certified stone. Do Amore Diamonds lists it at €1,551. 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

1.70
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620454779
Dimensions8.48 × 5.85 × 3.98 mm
L/W Ratio1.45
Culet sizePointed
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
8.48 mm5.85 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620454779
Side View
Table 66.0%Crown 43.2°Girdle: MediumPavilion 35.7°Culet: NoneDepth 68.0%

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 27
Current: €1,551 EUR|Low: €161 EUR|High: €1,614 EUR|Avg: €689 EUR|-3.9%
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
October 25, 2026
Retailer 8€161 EUR
Retailer 5€187 EUR
Retailer 7€354 EUR
Retailer 12€376 EUR
Retailer 3€481 EUR
Retailer 4€600 EUR
Retailer 6€680 EUR
Retailer 11€687 EUR
Retailer 9€711 EUR
Retailer 2€1,035 EUR
Retailer 10€1,114 EUR
Do Amore Diamonds€1,551 EUR

16 data points across 12 retailers

9 retailers€161 EUR to €1,551 EUR

A
Cheapest Retailer
-
€161 EUR
$181 USD
A
Retailer 2
-
€187 EUR
$210 USD
View
B+
Retailer 3
-
€354 EUR
$397 USD
View
Retailer 4
-
€680 EUR
$763 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
€711 EUR
$797 USD
View
B
Retailer 6
-
€966 EUR
£853 GBP
View
Retailer 7
-
€1,035 EUR
£914 GBP
View
Price last confirmed 7 days ago
B
Retailer 8
-
€1,114 EUR
$1,250 USD
View
Most Expensive
B
Do Amore Diamonds
27-E06B8DF26 · Oct 29
€1,551 EUR
$1,740 USD
View
8 more retailers have this diamond
Prices start from €161 EURSave up to €1,390 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
1.70ct Radiant
€161 EUR