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Round|Lab Grown|IGI

8.18ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG605381441

Shape and cutting style on the report: Round brilliant

Certificate IGI LG605381441

Diamond specifications and retailer prices

From €1,512 EUR
$1,696 USD
As of November 2, 2026
Save €3,222 EUR (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €4,734 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 8.18ct lab-grown round diamond

This 8.18ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG605381441 or 605381441. Listed at 14 retailers as of October 31, 2026, with prices from €1,512 to €4,734, a €3,222 spread on the same certified stone. Brilliant Earth lists it at €4,734. 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

8.18
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605381441
Dimensions12.90 × 12.85 × 7.98 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
12.90 mm12.85 mm8.18 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605381441
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €4,734 EUR|Low: €1,025 EUR|High: €4,886 EUR|Avg: €2,307 EUR|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3€1,025 EUR
Retailer 8€1,042 EUR
Retailer 10€1,512 EUR
Retailer 4€1,576 EUR
Retailer 9€1,638 EUR
Retailer 6€1,641 EUR
Retailer 2€1,681 EUR
Retailer 7€2,209 EUR
Retailer 5€3,476 EUR
Retailer 11€4,085 EUR
Brilliant Earth€4,734 EUR

36 data points across 11 retailers

14 retailers€1,512 EUR to €4,734 EUR

Retailer 1
-
€884 EUR
$991 USD
Price last confirmed 40 days ago
Retailer 2
-
€961 EUR
$1,078 USD
View
Price last confirmed 40 days ago
Retailer 3
-
€1,011 EUR
$1,134 USD
View
Price last confirmed 36 days ago
Retailer 4
-
€1,042 EUR
£920 GBP
View
Price last confirmed 16 days ago
B+
Retailer 5
-
€1,512 EUR
$1,696 USD
View
B+
Retailer 6
-
€1,576 EUR
£1,392 GBP
View
B+
Retailer 7
-
€1,638 EUR
$1,837 USD
View
B+
Retailer 8
-
€1,641 EUR
$1,840 USD
View
B+
Retailer 9
-
€1,681 EUR
View
Retailer 10
-
€1,921 EUR
$2,155 USD
View
Price last confirmed 37 days ago
B+
Retailer 11
-
€2,209 EUR
$2,478 USD
View
B
Retailer 12
-
€3,476 EUR
£3,070 GBP
View
B
Retailer 13
-
€4,085 EUR
$4,582 USD
View
Most Expensive
B
Brilliant Earth
8497740A · Oct 31
€4,734 EUR
$5,310 USD
View
13 more retailers have this diamond
Prices start from €1,512 EURSave up to €3,222 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.

B+
8.18ct Round
€1,512 EUR