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Cushion|Lab Grown|IGI

4.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811627555

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811627555

Diamond specifications and retailer prices

From HK$37,746 HKD
$4,811 USD
As of November 1, 2026
Save HK$104,973 HKD (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$142,719 HKD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.18ct lab-grown cushion diamond

This 4.18ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811627555 or 811627555. Listed at 13 retailers as of October 31, 2026, with prices from HK$37,746 to HK$142,719, a HK$104,973 spread on the same certified stone. Taylor and Hart lists it at HK$142,719. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.18
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.3°
Pavilion angle29.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811627555
Dimensions11.02 × 8.26 × 5.29 mm
L/W Ratio1.33
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.02 mm8.26 mm4.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811627555
Side View
Table 63.0%Crown 31.3°Girdle: STK-VTKPavilion 29.1°Culet: NoneDepth 64.0%

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: Nov 1
Current: HK$82,841 HKD|Low: HK$32,560 HKD|High: HK$168,844 HKD|Avg: HK$74,173 HKD|-13.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
November 1, 2026
Retailer 12HK$37,746 HKD
Retailer 2HK$38,632 HKD
Retailer 4HK$40,013 HKD
Retailer 7HK$40,327 HKD
Retailer 8HK$48,000 HKD
Retailer 5HK$51,880 HKD
Retailer 3HK$56,317 HKD
Retailer 9HK$61,910 HKD
Retailer 11HK$74,856 HKD
Retailer 1HK$82,841 HKD
Retailer 6HK$85,152 HKD
Retailer 10HK$111,175 HKD
Taylor and HartHK$142,719 HKD

42 data points across 13 retailers

13 retailersHK$37,746 HKD to HK$142,719 HKD

A
Cheapest Retailer
-
HK$37,746 HKD
$4,811 USD
A
Retailer 2
-
HK$38,632 HKD
$4,924 USD
View
Final sale: no returns
Retailer 3
-
HK$40,013 HKD
$5,100 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
HK$40,327 HKD
$5,140 USD
View
A
Retailer 5
-
HK$48,000 HKD
$6,118 USD
View
A
Retailer 6
-
HK$51,880 HKD
£5,207 GBP
View
A
Retailer 7
-
HK$56,317 HKD
£5,652 GBP
View
A
Retailer 8
-
HK$61,910 HKD
$7,891 USD
View
B+
Retailer 9
-
HK$74,856 HKD
$9,541 USD
View
B+
Retailer 10
-
HK$82,841 HKD
£8,314 GBP
View
B+
Retailer 11
-
HK$85,152 HKD
ZAR 175,337 ZAR
View
B+
Retailer 12
-
HK$111,175 HKD
$14,170 USD
View
Most Expensive
B
Taylor and Hart
5RC8QBX · Oct 31
HK$142,719 HKD
$18,191 USD
View
12 more retailers have this diamond
Prices start from HK$37,746 HKDSave up to HK$104,973 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
4.18ct Cushion
HK$37,746 HKD