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Round|Lab Grown|IGI

1.66ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG589308920

Shape and cutting style on the report: Round brilliant

Certificate IGI LG589308920

Diamond specifications and retailer prices

From HK$1,554 HKD
$198 USD
As of October 29, 2026
Save HK$15,002 HKD (91%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$16,555 HKD at Jared · As of October 28, 2026
View at Jared

About this 1.66ct lab-grown round diamond

This 1.66ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG589308920 or 589308920. Listed at 11 retailers as of October 28, 2026, with prices from HK$1,554 to HK$16,555, a HK$15,002 spread on the same certified stone. Jared lists it at HK$16,555. 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

1.66
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG589308920
Dimensions7.61 × 7.65 × 4.68 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.61 mm7.65 mm1.66 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG589308920
Side View
Table 56.0%Crown 34.2°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
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 29
Current: HK$3,927 HKD|Low: HK$1,287 HKD|High: HK$15,221 HKD|Avg: HK$5,745 HKD|-1.7%
Retailer 1
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
October 29, 2026
Retailer 14HK$1,554 HKD
Retailer 15HK$1,758 HKD
Retailer 13HK$1,805 HKD
Retailer 12HK$3,342 HKD
Retailer 1HK$3,927 HKD
Retailer 5HK$4,269 HKD
Retailer 4HK$4,723 HKD
Retailer 3HK$4,770 HKD
Retailer 6HK$4,855 HKD
Retailer 7HK$4,904 HKD
Retailer 9HK$6,214 HKD
Retailer 10HK$6,834 HKD
Retailer 8HK$8,530 HKD
Retailer 2HK$10,514 HKD
Retailer 11HK$14,908 HKD

32 data points across 15 retailers

11 retailersHK$1,554 HKD to HK$16,555 HKD

A
Cheapest Retailer
-
HK$1,554 HKD
$198 USD
A
Retailer 2
-
HK$1,758 HKD
$224 USD
View
Final sale: no returns
A
Retailer 3
-
HK$1,805 HKD
$230 USD
View
B+
Retailer 4
-
HK$3,342 HKD
$426 USD
View
A
Retailer 5
-
HK$3,927 HKD
£394 GBP
View
B+
Retailer 6
-
HK$6,214 HKD
$792 USD
View
B+
Retailer 7
-
HK$6,834 HKD
$871 USD
View
Retailer 8
-
HK$8,530 HKD
£856 GBP
View
Price last confirmed 7 days ago
B
Retailer 9
-
HK$10,514 HKD
$1,340 USD
View
B
Retailer 10
-
HK$14,908 HKD
$1,900 USD
View
Most Expensive
B
Jared
150062110 · Oct 28
HK$16,555 HKD
$2,110 USD
View
10 more retailers have this diamond
Prices start from HK$1,554 HKDSave up to HK$15,002 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
1.66ct Round
HK$1,554 HKD