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Asscher|Lab Grown|IGI

4.21ct D FL Asscher Lab Grown Diamond

EX • D/FL • IGI LG831604048

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG831604048

Diamond specifications and retailer prices

From HK$40,210 HKD
£4,035 GBP
As of October 30, 2026
Save HK$142,368 HKD (78%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$182,577 HKD at With Clarity · As of October 30, 2026
View at With Clarity

About this 4.21ct lab-grown asscher diamond

This 4.21ct lab-grown asscher 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 LG831604048 or 831604048. Listed at 25 retailers as of October 30, 2026, with prices from HK$40,210 to HK$182,577, a HK$142,368 spread on the same certified stone. With Clarity lists it at HK$182,577. 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

4.21
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604048
Dimensions8.97 × 8.94 × 5.92 mm
L/W Ratio1.00
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
8.97 mm8.94 mm4.21 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604048
Side View
Table 62.0%Crown 35.3°Girdle: MediumPavilion 41.6°Culet: NoneDepth 66.2%

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$87,095 HKD|Low: HK$39,833 HKD|High: HK$174,096 HKD|Avg: HK$78,744 HKD|-24.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 10HK$40,210 HKD
Retailer 6HK$41,496 HKD
Retailer 5HK$43,481 HKD
Retailer 7HK$48,133 HKD
Retailer 3HK$53,013 HKD
Retailer 8HK$58,347 HKD
Retailer 11HK$61,684 HKD
Retailer 4HK$70,376 HKD
Retailer 2HK$71,961 HKD
Retailer 13HK$79,085 HKD
Retailer 1HK$87,095 HKD
Retailer 14HK$98,465 HKD
Retailer 12HK$102,441 HKD
Retailer 9HK$111,409 HKD
Retailer 15HK$166,697 HKD

29 data points across 15 retailers

25 retailersHK$40,210 HKD to HK$182,577 HKD

A
Cheapest Retailer
-
HK$40,210 HKD
£4,035 GBP
A
Retailer 2
-
HK$41,496 HKD
$5,289 USD
View
A
Retailer 3
-
HK$43,481 HKD
$5,542 USD
View
A
Retailer 4
-
HK$44,171 HKD
$5,630 USD
View
A
Retailer 5
-
HK$46,462 HKD
$5,922 USD
View
Final sale: no returns
A
Retailer 6
-
HK$48,133 HKD
$6,135 USD
View
Retailer 7
-
HK$48,133 HKD
$6,135 USD
View
Price last confirmed 14 days ago
A
Retailer 8
-
HK$48,251 HKD
$6,150 USD
View
A
Retailer 9
-
HK$50,950 HKD
$6,494 USD
View
A
Retailer 10
-
HK$53,013 HKD
$6,757 USD
View
A
Retailer 11
-
HK$57,140 HKD
$7,283 USD
View
A
Retailer 12
-
HK$58,347 HKD
View
A
Retailer 13
-
HK$61,684 HKD
£6,191 GBP
View
B+
Retailer 14
-
HK$68,274 HKD
£6,852 GBP
View
Retailer 15
-
HK$70,376 HKD
$8,970 USD
View
Price last confirmed 12 days ago
B+
Retailer 16
-
HK$71,961 HKD
$9,172 USD
View
B+
Retailer 17
-
HK$79,085 HKD
€9,600 EUR
View
B+
Retailer 18
-
HK$87,095 HKD
$11,101 USD
View
B+
Retailer 19
-
HK$98,465 HKD
£9,882 GBP
View
B+
Retailer 20
-
HK$102,441 HKD
ZAR 210,936 ZAR
View
B+
Retailer 21
-
HK$111,409 HKD
$14,200 USD
View
B
Retailer 22
-
HK$133,848 HKD
$17,060 USD
View
B
Retailer 23
-
HK$166,697 HKD
SGD 28,712 SGD
View
B
Retailer 24
-
HK$171,510 HKD
$21,860 USD
View
Most Expensive
B
With Clarity
831604048 · Oct 30
HK$182,577 HKD
$23,271 USD
View
24 more retailers have this diamond
Prices start from HK$40,210 HKDSave up to HK$142,368 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
4.21ct Asscher
HK$40,210 HKD