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Cushion|Lab Grown|IGI

4.05ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG771607368

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG771607368

Diamond specifications and retailer prices

From HK$34,339 HKD
£3,446 GBP
As of October 30, 2026
Save HK$112,490 HKD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$146,829 HKD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG771607368 or 771607368. Listed at 16 retailers as of October 30, 2026, with prices from HK$34,339 to HK$146,829, a HK$112,490 spread on the same certified stone. Taylor and Hart lists it at HK$146,829. 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

4.05
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771607368
Dimensions10.67 × 8.17 × 5.52 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.67 mm8.17 mm4.05 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771607368
Side View
Table 63.0%Crown 33.9°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 67.6%

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 30
Current: HK$34,339 HKD|Low: HK$34,224 HKD|High: HK$141,325 HKD|Avg: HK$73,561 HKD|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 1HK$34,339 HKD
Retailer 3HK$39,236 HKD
Retailer 9HK$41,104 HKD
Retailer 4HK$53,362 HKD
Retailer 10HK$63,582 HKD
Retailer 6HK$66,200 HKD
Retailer 7HK$85,561 HKD
Retailer 5HK$87,481 HKD
Retailer 8HK$90,051 HKD
Retailer 11HK$103,493 HKD
Retailer 2HK$141,325 HKD

39 data points across 11 retailers

16 retailersHK$34,339 HKD to HK$146,829 HKD

A
Cheapest Retailer
-
HK$34,339 HKD
£3,446 GBP
A
Retailer 2
-
HK$39,236 HKD
$5,001 USD
View
A
Retailer 3
-
HK$39,684 HKD
$5,058 USD
View
Final sale: no returns
Retailer 4
-
HK$41,104 HKD
$5,239 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
HK$41,425 HKD
$5,280 USD
View
A
Retailer 6
-
HK$49,185 HKD
$6,269 USD
View
A
Retailer 7
-
HK$53,362 HKD
£5,355 GBP
View
A
Retailer 8
-
HK$57,991 HKD
£5,820 GBP
View
B+
Retailer 9
-
HK$63,582 HKD
$8,104 USD
View
B+
Retailer 10
-
HK$66,200 HKD
€8,036 EUR
View
B+
Retailer 11
-
HK$85,561 HKD
£8,587 GBP
View
B+
Retailer 12
-
HK$87,481 HKD
ZAR 180,133 ZAR
View
Retailer 13
-
HK$90,051 HKD
A$17,658 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
HK$103,493 HKD
$13,191 USD
View
B
Retailer 15
-
HK$141,325 HKD
SGD 24,342 SGD
View
Most Expensive
B
Taylor and Hart
R8JQKCD · Oct 30
HK$146,829 HKD
$18,715 USD
View
15 more retailers have this diamond
Prices start from HK$34,339 HKDSave up to HK$112,490 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
4.05ct Cushion
HK$34,339 HKD