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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 HK$13,306 HKD
$1,696 USD
As of November 2, 2026
Save HK$28,354 HKD (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$41,661 HKD 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 HK$13,306 to HK$41,661, a HK$28,354 spread on the same certified stone. Brilliant Earth lists it at HK$41,661. 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: HK$41,661 HKD|Low: HK$9,023 HKD|High: HK$42,994 HKD|Avg: HK$20,277 HKD|-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 3HK$9,023 HKD
Retailer 8HK$9,169 HKD
Retailer 10HK$13,306 HKD
Retailer 4HK$13,868 HKD
Retailer 9HK$14,413 HKD
Retailer 6HK$14,436 HKD
Retailer 2HK$14,795 HKD
Retailer 7HK$19,442 HKD
Retailer 5HK$30,590 HKD
Retailer 11HK$35,949 HKD
Brilliant EarthHK$41,661 HKD

37 data points across 11 retailers

14 retailersHK$13,306 HKD to HK$41,661 HKD

Retailer 1
-
HK$7,775 HKD
$991 USD
Price last confirmed 39 days ago
Retailer 2
-
HK$8,458 HKD
$1,078 USD
View
Price last confirmed 39 days ago
Retailer 3
-
HK$8,897 HKD
$1,134 USD
View
Price last confirmed 35 days ago
Retailer 4
-
HK$9,169 HKD
£920 GBP
View
Price last confirmed 16 days ago
B+
Retailer 5
-
HK$13,306 HKD
$1,696 USD
View
B+
Retailer 6
-
HK$13,868 HKD
£1,392 GBP
View
B+
Retailer 7
-
HK$14,413 HKD
$1,837 USD
View
B+
Retailer 8
-
HK$14,436 HKD
$1,840 USD
View
B+
Retailer 9
-
HK$14,795 HKD
€1,796 EUR
View
Retailer 10
-
HK$16,907 HKD
$2,155 USD
View
Price last confirmed 36 days ago
B+
Retailer 11
-
HK$19,442 HKD
$2,478 USD
View
B
Retailer 12
-
HK$30,590 HKD
£3,070 GBP
View
B
Retailer 13
-
HK$35,949 HKD
$4,582 USD
View
Most Expensive
B
Brilliant Earth
8497740A · Oct 31
HK$41,661 HKD
$5,310 USD
View
13 more retailers have this diamond
Prices start from HK$13,306 HKDSave up to HK$28,354 HKD

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
HK$13,306 HKD