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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 $2,169 SGD
$1,696 USD
As of November 2, 2026
Save $4,622 SGD (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,791 SGD at Brilliant Earth · As of November 2, 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 13 retailers as of November 2, 2026, with prices from $2,169 to $6,791, a $4,622 spread on the same certified stone. Brilliant Earth lists it at $6,791. 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: $6,791 SGD|Low: $1,471 SGD|High: $7,008 SGD|Avg: $3,309 SGD|-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$1,471 SGD
Retailer 8$1,495 SGD
Retailer 10$2,169 SGD
Retailer 4$2,261 SGD
Retailer 9$2,349 SGD
Retailer 6$2,353 SGD
Retailer 2$2,412 SGD
Retailer 7$3,169 SGD
Retailer 5$4,986 SGD
Retailer 11$5,860 SGD
Brilliant Earth$6,791 SGD

36 data points across 11 retailers

13 retailers$2,169 SGD to $6,791 SGD

Retailer 1
-
$1,267 SGD
$991 USD
Price last confirmed 40 days ago
Retailer 2
-
$1,379 SGD
$1,078 USD
View
Price last confirmed 40 days ago
Retailer 3
-
$1,450 SGD
$1,134 USD
View
Price last confirmed 36 days ago
B+
Retailer 4
-
$2,169 SGD
$1,696 USD
View
B+
Retailer 5
-
$2,261 SGD
£1,392 GBP
View
B+
Retailer 6
-
$2,349 SGD
$1,837 USD
View
B+
Retailer 7
-
$2,353 SGD
$1,840 USD
View
B+
Retailer 8
-
$2,412 SGD
€1,796 EUR
View
Retailer 9
-
$2,756 SGD
$2,155 USD
View
Price last confirmed 37 days ago
B+
Retailer 10
-
$3,169 SGD
$2,478 USD
View
B
Retailer 11
-
$4,986 SGD
£3,070 GBP
View
B
Retailer 12
-
$5,860 SGD
$4,582 USD
View
Most Expensive
B
Brilliant Earth
8497740A · Nov 2
$6,791 SGD
$5,310 USD
View
12 more retailers have this diamond
Prices start from $2,169 SGDSave up to $4,622 SGD

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
$2,169 SGD