CaratHunter
Plans
Cushion|Lab Grown|IGI

4.12ct E FL Cushion Lab Grown Diamond

EX • E/FL • IGI LG821638855

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821638855

Diamond specifications and retailer prices

From HK$30,363 HKD
$3,870 USD
As of October 31, 2026
Save HK$144,518 HKD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$174,881 HKD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.12ct lab-grown cushion diamond

This 4.12ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821638855 or 821638855. Listed at 10 retailers as of October 30, 2026, with prices from HK$30,363 to HK$174,881, a HK$144,518 spread on the same certified stone. Do Amore Diamonds lists it at HK$174,881. 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

4.12
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821638855
Dimensions10.92 × 8.42 × 5.68 mm
L/W Ratio1.30
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
10.92 mm8.42 mm4.12 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821638855
Side View
Table 59.0%Crown 33.4°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 67.5%

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 31
Current: HK$174,881 HKD|Low: HK$30,716 HKD|High: HK$254,695 HKD|Avg: HK$91,358 HKD|-3.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 6HK$30,716 HKD
Retailer 7HK$33,737 HKD
Retailer 4HK$36,898 HKD
Retailer 8HK$47,435 HKD
Retailer 5HK$55,755 HKD
Retailer 10HK$64,727 HKD
Retailer 11HK$72,235 HKD
Retailer 9HK$72,359 HKD
Retailer 2HK$94,070 HKD
Do Amore DiamondsHK$174,881 HKD
Retailer 3HK$204,443 HKD

26 data points across 11 retailers

10 retailersHK$30,363 HKD to HK$174,881 HKD

A
Cheapest Retailer
-
HK$30,363 HKD
$3,870 USD
A
Retailer 2
-
HK$30,716 HKD
$3,915 USD
View
A
Retailer 3
-
HK$36,898 HKD
$4,703 USD
View
A
Retailer 4
-
HK$47,435 HKD
$6,046 USD
View
A
Retailer 5
-
HK$55,755 HKD
€6,768 EUR
View
Retailer 6
-
HK$64,727 HKD
$8,250 USD
View
Price last confirmed 16 days ago
Retailer 7
-
HK$72,235 HKD
$9,207 USD
View
Price last confirmed 13 days ago
B+
Retailer 8
-
HK$72,359 HKD
£7,262 GBP
View
B+
Retailer 9
-
HK$94,070 HKD
$11,990 USD
View
Most Expensive
B
Do Amore Diamonds
27-D7A519999 · Oct 30
HK$174,881 HKD
$22,290 USD
View
9 more retailers have this diamond
Prices start from HK$30,363 HKDSave up to HK$144,518 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
4.12ct Cushion
HK$30,363 HKD