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Radiant|Lab Grown|IGI

0.81ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG648465420

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

Certificate IGI LG648465420

Diamond specifications and retailer prices

From €112 EUR
$125 USD
As of October 30, 2026
Save €359 EUR (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €471 EUR at Friendly Diamonds · As of October 31, 2026
View at Friendly Diamonds

About this 0.81ct lab-grown radiant diamond

This 0.81ct lab-grown radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG648465420 or 648465420. Listed at 13 retailers as of October 30, 2026, with prices from €112 to €471, a €359 spread on the same certified stone. Friendly Diamonds lists it at €471. 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

0.81
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.8°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648465420
Dimensions6.43 × 4.60 × 3.10 mm
L/W Ratio1.40
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.43 mm4.60 mm0.81 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648465420
Side View
Table 67.0%Crown 46.8°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 67.4%

Caratlytics Score

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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: €471 EUR|Low: €112 EUR|High: €671 EUR|Avg: €292 EUR
Friendly 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
Retailer 15
Retailer 16
November 1, 2026
Retailer 11€112 EUR
Retailer 6€130 EUR
Retailer 12€148 EUR
Retailer 5€160 EUR
Retailer 2€201 EUR
Retailer 16€212 EUR
Retailer 15€228 EUR
Retailer 9€230 EUR
Retailer 10€248 EUR
Retailer 3€266 EUR
Retailer 4€285 EUR
Retailer 13€353 EUR
Retailer 14€446 EUR
Friendly Diamonds€471 EUR
Retailer 7€552 EUR
Retailer 8€671 EUR

5 data points across 16 retailers

13 retailers€112 EUR to €471 EUR

A
Cheapest Retailer
-
€112 EUR
$125 USD
A
Retailer 2
-
€130 EUR
$145 USD
View
A
Retailer 3
-
€148 EUR
$165 USD
View
A
Retailer 4
-
€160 EUR
HK$1,400 HKD
View
A
Retailer 5
-
€201 EUR
£176 GBP
View
A
Retailer 6
-
€212 EUR
$237 USD
View
A
Retailer 7
-
€230 EUR
£202 GBP
View
A
Retailer 8
-
€248 EUR
View
B+
Retailer 9
-
€266 EUR
$297 USD
View
B+
Retailer 10
-
€285 EUR
£251 GBP
View
B+
Retailer 11
-
€353 EUR
$394 USD
View
B
Retailer 12
-
€446 EUR
$498 USD
View
Most Expensive
B
Friendly Diamonds
6558455 · Oct 31
€471 EUR
$526 USD
View
12 more retailers have this diamond
Prices start from €112 EURSave up to €359 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
0.81ct Radiant
€112 EUR