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Cushion|Lab Grown|IGI

0.66ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG805673495

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG805673495

Diamond specifications and retailer prices

From HK$1,105 HKD
As of November 1, 2026
Save HK$1,595 HKD (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$7,075 HKD at MOH London · As of October 26, 2026
View at MOH London

About this 0.66ct lab-grown cushion diamond

This 0.66ct lab-grown cushion sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG805673495 or 805673495. Listed at 9 retailers as of November 1, 2026, with a 144% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.66
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805673495
Dimensions4.95 × 4.90 × 3.10 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.95 mm4.90 mm0.66 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG805673495
Side View
Table 70.0%Crown 36.5°Girdle: MED-STKPavilion 33.8°Culet: NoneDepth 63.3%

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: Nov 1
Current: HK$7,075 HKD|Low: HK$1,105 HKD|High: HK$7,224 HKD|Avg: HK$2,693 HKD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9HK$1,105 HKD
Retailer 3HK$1,755 HKD
Retailer 6HK$1,842 HKD
Retailer 8HK$1,969 HKD
Retailer 2HK$2,158 HKD
Retailer 7HK$2,368 HKD
Retailer 4HK$2,668 HKD
Retailer 5HK$2,700 HKD
MOH LondonHK$7,075 HKD

42 data points across 9 retailers

9 retailersHK$1,105 HKD to HK$2,700 HKD

A
Cheapest Retailer
-
HK$1,105 HKD
A
Retailer 2
-
HK$1,755 HKD
€213 EUR
View
A
Retailer 3
-
HK$1,842 HKD
£185 GBP
View
Retailer 4
-
HK$1,969 HKD
$251 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
HK$2,158 HKD
$275 USD
View
Retailer 6
-
HK$2,368 HKD
£238 GBP
View
Price last confirmed 7 days ago
A
Retailer 7
-
HK$2,668 HKD
$340 USD
View
A
Retailer 8
-
HK$2,700 HKD
SGD 465 SGD
View
Most Expensive
MOH London
LG805673495 · Oct 26
HK$7,075 HKD
£710 GBP
View
Price last confirmed 7 days ago
8 more retailers have this diamond
Prices start from HK$1,105 HKDSave up to HK$1,595 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
0.66ct Cushion
HK$1,105 HKD