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1.09ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG818686663

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686663

Diamond specifications and retailer prices

From HK$1,122 HKD
$143 USD
As of October 29, 2026
Save HK$5,424 HKD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$6,546 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818686663 or 818686663. Listed at 15 retailers as of October 29, 2026, with prices from HK$1,122 to HK$6,546, a HK$5,424 spread on the same certified stone. MOH London lists it at HK$6,546. 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

1.09
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686663
Dimensions6.60 × 6.69 × 4.07 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.60 mm6.69 mm1.09 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686663
Side View
Table 56.0%Crown 35.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: HK$6,546 HKD|Low: HK$1,122 HKD|High: HK$6,975 HKD|Avg: HK$3,194 HKD|-6.1%
MOH London
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
November 1, 2026
Retailer 10HK$1,122 HKD
Retailer 8HK$1,302 HKD
Retailer 6HK$1,397 HKD
Retailer 7HK$1,475 HKD
Retailer 2HK$2,390 HKD
Retailer 11HK$2,471 HKD
Retailer 15HK$2,597 HKD
Retailer 14HK$2,668 HKD
Retailer 9HK$3,111 HKD
Retailer 12HK$3,342 HKD
Retailer 4HK$3,515 HKD
Retailer 13HK$3,844 HKD
Retailer 5HK$4,480 HKD
Retailer 3HK$4,916 HKD
MOH LondonHK$6,546 HKD

28 data points across 15 retailers

15 retailersHK$1,122 HKD to HK$6,546 HKD

A
Cheapest Retailer
-
HK$1,122 HKD
$143 USD
A
Retailer 2
-
HK$1,302 HKD
$166 USD
View
A
Retailer 3
-
HK$1,397 HKD
$178 USD
View
A
Retailer 4
-
HK$1,475 HKD
$188 USD
View
A
Retailer 5
-
HK$2,390 HKD
£240 GBP
View
A
Retailer 6
-
HK$2,471 HKD
€300 EUR
View
A
Retailer 7
-
HK$2,597 HKD
$331 USD
View
A
Retailer 8
-
HK$2,668 HKD
$340 USD
View
B+
Retailer 9
-
HK$3,111 HKD
£312 GBP
View
B+
Retailer 10
-
HK$3,342 HKD
$426 USD
View
B+
Retailer 11
-
HK$3,515 HKD
$448 USD
View
B+
Retailer 12
-
HK$3,844 HKD
$490 USD
View
B+
Retailer 13
-
HK$4,480 HKD
$571 USD
View
B
Retailer 14
-
HK$4,916 HKD
$627 USD
View
Most Expensive
B
MOH London
LG818686663 · Oct 29
HK$6,546 HKD
£657 GBP
View
14 more retailers have this diamond
Prices start from HK$1,122 HKDSave up to HK$5,424 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.

A
1.09ct Round
HK$1,122 HKD