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Round|Lab Grown|IGI

4.20ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754594373

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754594373

Diamond specifications and retailer prices

From HK$14,971 HKD
$1,908 USD
As of October 29, 2026
Save HK$170,047 HKD (92%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$185,018 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.2ct lab-grown round diamond

This 4.2ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754594373 or 754594373. Listed at 17 retailers as of October 29, 2026, with prices from HK$14,971 to HK$185,018, a HK$170,047 spread on the same certified stone. Brilliant Earth lists it at HK$185,018. 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

4.20
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594373
Dimensions10.35 × 10.39 × 6.37 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.35 mm10.39 mm4.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594373
Side View
Table 56.0%Crown 34.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.4%

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 29
Current: HK$185,018 HKD|Low: HK$14,971 HKD|High: HK$190,668 HKD|Avg: HK$49,114 HKD|-3.0%
Brilliant Earth
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
Retailer 16
Retailer 17
October 29, 2026
Retailer 14HK$14,971 HKD
Retailer 4HK$16,289 HKD
Retailer 15HK$18,133 HKD
Retailer 9HK$18,831 HKD
Retailer 12HK$22,519 HKD
Retailer 3HK$26,348 HKD
Retailer 13HK$27,196 HKD
Retailer 17HK$28,514 HKD
Retailer 8HK$28,804 HKD
Retailer 10HK$30,953 HKD
Retailer 5HK$40,015 HKD
Retailer 6HK$42,056 HKD
Retailer 11HK$48,020 HKD
Retailer 2HK$52,286 HKD
Retailer 7HK$84,826 HKD
Retailer 16HK$103,023 HKD
Brilliant EarthHK$185,018 HKD

33 data points across 17 retailers

17 retailersHK$14,971 HKD to HK$185,018 HKD

A
Cheapest Retailer
-
HK$14,971 HKD
$1,908 USD
A
Retailer 2
-
HK$16,289 HKD
$2,076 USD
View
A
Retailer 3
-
HK$18,133 HKD
$2,311 USD
View
A
Retailer 4
-
HK$18,831 HKD
$2,400 USD
View
Final sale: no returns
A
Retailer 5
-
HK$22,519 HKD
$2,870 USD
View
A
Retailer 6
-
HK$26,348 HKD
$3,358 USD
View
A
Retailer 7
-
HK$27,196 HKD
$3,466 USD
View
A
Retailer 8
-
HK$28,514 HKD
$3,634 USD
View
A
Retailer 9
-
HK$28,804 HKD
$3,671 USD
View
A
Retailer 10
-
HK$30,953 HKD
€3,757 EUR
View
A
Retailer 11
-
HK$40,015 HKD
$5,100 USD
View
Retailer 12
-
HK$42,056 HKD
A$8,246 AUD
View
Price last confirmed 7 days ago
A
Retailer 13
-
HK$48,020 HKD
$6,120 USD
View
B+
Retailer 14
-
HK$52,286 HKD
£5,247 GBP
View
Retailer 15
-
HK$84,826 HKD
A$16,632 AUD
View
Price last confirmed 21 days ago
B+
Retailer 16
-
HK$103,023 HKD
$13,130 USD
View
Most Expensive
B
Brilliant Earth
17680491Y · Oct 29
HK$185,018 HKD
$23,580 USD
View
16 more retailers have this diamond
Prices start from HK$14,971 HKDSave up to HK$170,047 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
4.20ct Round
HK$14,971 HKD