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Cushion|Lab Grown|IGI

1.61ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG551273866

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG551273866

Diamond specifications and retailer prices

From HK$3,154 HKD
$402 USD
As of October 25, 2026
4 retailers carry this diamond
Most expensive: HK$13,809 HKD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.61ct lab-grown cushion diamond

This 1.61ct lab-grown cushion 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 LG551273866 or 551273866. Listed at 4 retailers as of October 25, 2026. 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

1.61
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.4°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551273866
Dimensions7.65 × 6.30 × 4.28 mm
L/W Ratio1.21
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
7.65 mm6.30 mm1.61 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG551273866
Side View
Table 62.0%Crown 35.4°Girdle: MED-THKPavilion 39.3°Culet: NoneDepth 67.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 25
Current: HK$13,809 HKD|Low: HK$1,153 HKD|High: HK$14,672 HKD|Avg: HK$8,088 HKD|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 26, 2026
Retailer 6HK$1,710 HKD
Retailer 4HK$3,154 HKD
Retailer 5HK$6,291 HKD
Retailer 2HK$9,247 HKD
Brilliant EarthHK$13,809 HKD
Retailer 3HK$13,888 HKD

17 data points across 6 retailers

4 retailersHK$3,154 HKD to HK$13,809 HKD

Retailer 1
-
HK$3,154 HKD
$402 USD
Price last confirmed 8 days ago
Retailer 2
-
HK$6,291 HKD
$802 USD
View
Price last confirmed 7 days ago
Retailer 3
-
HK$9,247 HKD
£928 GBP
View
Price last confirmed 7 days ago
Most Expensive
Brilliant Earth
6534875Y · Oct 26
HK$13,809 HKD
$1,760 USD
View
Price last confirmed 7 days ago
3 more retailers have this diamond

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
1.61ct Cushion
HK$3,154 HKD