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Radiant|Lab Grown|IGI

1.71ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG818654290

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

Certificate IGI LG818654290

Diamond specifications and retailer prices

From €533 EUR
$596 USD
As of October 30, 2026
Save €3,118 EUR (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €3,652 EUR at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.71ct lab-grown radiant diamond

This 1.71ct 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 top-tier cut grade and certified by IGI LG818654290 or 818654290. Listed at 22 retailers as of October 28, 2026, with prices from €533 to €3,652, a €3,118 spread on the same certified stone. Rare Carat lists it at €3,652. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.2°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654290
Dimensions8.08 × 5.93 × 4.08 mm
L/W Ratio1.36
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
8.08 mm5.93 mm1.71 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654290
Side View
Table 63.0%Crown 42.2°Girdle: MED-STKPavilion 35.7°Culet: NoneDepth 68.8%

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 30
Current: €3,652 EUR|Low: €533 EUR|High: €4,905 EUR|Avg: €1,695 EUR|-1.1%
Rare Carat
Retailer 2
Retailer 3
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Retailer 12
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Retailer 21
October 31, 2026
Retailer 12€533 EUR
Retailer 20€597 EUR
Retailer 8€619 EUR
Retailer 11€661 EUR
Retailer 19€779 EUR
Retailer 3€857 EUR
Retailer 4€1,016 EUR
Retailer 13€1,026 EUR
Retailer 2€1,082 EUR
Retailer 18€1,137 EUR
Retailer 6€1,220 EUR
Retailer 5€1,433 EUR
Retailer 9€1,739 EUR
Retailer 7€1,923 EUR
Retailer 14€2,139 EUR
Retailer 15€2,170 EUR
Retailer 10€2,249 EUR
Retailer 21€2,367 EUR
Retailer 17€2,886 EUR
Retailer 16€3,571 EUR
Rare Carat€3,652 EUR

30 data points across 21 retailers

22 retailers€533 EUR to €3,652 EUR

A
Cheapest Retailer
-
€533 EUR
$596 USD
A
Retailer 2
-
€597 EUR
$667 USD
View
A
Retailer 3
-
€619 EUR
$692 USD
View
Final sale: no returns
Retailer 4
-
€661 EUR
$738 USD
View
Price last confirmed 15 days ago
A
Retailer 5
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€661 EUR
$739 USD
View
A
Retailer 6
-
€779 EUR
$870 USD
View
A
Retailer 7
-
€857 EUR
$957 USD
View
A
Retailer 8
-
€1,016 EUR
$1,135 USD
View
A
Retailer 9
-
€1,026 EUR
£902 GBP
View
A
Retailer 10
-
€1,082 EUR
View
B+
Retailer 11
-
€1,137 EUR
ZAR 20,514 ZAR
View
B+
Retailer 12
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€1,220 EUR
$1,363 USD
View
B+
Retailer 13
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€1,433 EUR
$1,601 USD
View
B+
Retailer 14
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€1,739 EUR
$1,943 USD
View
B+
Retailer 15
-
€1,923 EUR
£1,692 GBP
View
B+
Retailer 16
-
€2,139 EUR
$2,390 USD
View
B+
Retailer 17
-
€2,170 EUR
$2,424 USD
View
B+
Retailer 18
-
€2,249 EUR
SGD 3,395 SGD
View
B
Retailer 19
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€2,367 EUR
$2,644 USD
View
B
Retailer 20
-
€2,886 EUR
£2,539 GBP
View
B
Retailer 21
-
€3,571 EUR
$3,990 USD
View
Most Expensive
B
Rare Carat
PD-237885 · Oct 28
€3,652 EUR
$4,080 USD
View
21 more retailers have this diamond
Prices start from €533 EURSave up to €3,118 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
1.71ct Radiant
€533 EUR