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Round|Lab Grown|IGI

4.20ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG768630985

Shape and cutting style on the report: Round brilliant

Certificate IGI LG768630985

Diamond specifications and retailer prices

From HK$14,970 HKD
$1,908 USD
As of October 29, 2026
Save HK$88,672 HKD (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$103,642 HKD at Brilliant Earth · As of October 30, 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 LG768630985 or 768630985. Listed at 16 retailers as of October 29, 2026, with prices from HK$14,970 to HK$103,642, a HK$88,672 spread on the same certified stone. Brilliant Earth lists it at HK$103,642. 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 LG768630985
Dimensions10.34 × 10.36 × 6.38 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
10.34 mm10.36 mm4.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768630985
Side View
Table 56.0%Crown 34.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.6%

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 29
Current: HK$103,642 HKD|Low: HK$14,695 HKD|High: HK$190,651 HKD|Avg: HK$46,952 HKD|-45.6%
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
October 30, 2026
Retailer 11HK$14,970 HKD
Retailer 16HK$16,288 HKD
Retailer 12HK$18,131 HKD
Retailer 8HK$18,830 HKD
Retailer 5HK$22,517 HKD
Retailer 15HK$26,346 HKD
Retailer 10HK$27,193 HKD
Retailer 14HK$28,511 HKD
Retailer 7HK$28,802 HKD
Retailer 9HK$30,950 HKD
Retailer 3HK$40,012 HKD
Retailer 4HK$42,052 HKD
Retailer 2HK$52,281 HKD
Retailer 6HK$84,818 HKD
Retailer 13HK$103,014 HKD
Brilliant EarthHK$103,642 HKD

33 data points across 16 retailers

16 retailersHK$14,970 HKD to HK$103,642 HKD

A
Cheapest Retailer
-
HK$14,970 HKD
$1,908 USD
A
Retailer 2
-
HK$16,288 HKD
$2,076 USD
View
A
Retailer 3
-
HK$18,131 HKD
$2,311 USD
View
A
Retailer 4
-
HK$18,830 HKD
$2,400 USD
View
Final sale: no returns
A
Retailer 5
-
HK$22,517 HKD
$2,870 USD
View
A
Retailer 6
-
HK$26,346 HKD
$3,358 USD
View
A
Retailer 7
-
HK$27,193 HKD
$3,466 USD
View
A
Retailer 8
-
HK$28,511 HKD
$3,634 USD
View
A
Retailer 9
-
HK$28,802 HKD
$3,671 USD
View
A
Retailer 10
-
HK$30,950 HKD
€3,757 EUR
View
A
Retailer 11
-
HK$40,012 HKD
$5,100 USD
View
Retailer 12
-
HK$42,052 HKD
A$8,246 AUD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
HK$52,281 HKD
£5,247 GBP
View
Retailer 14
-
HK$84,818 HKD
A$16,632 AUD
View
Price last confirmed 21 days ago
B
Retailer 15
-
HK$103,014 HKD
$13,130 USD
View
Most Expensive
B
Brilliant Earth
18293994Y · Oct 30
HK$103,642 HKD
$13,210 USD
View
15 more retailers have this diamond
Prices start from HK$14,970 HKDSave up to HK$88,672 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$14,970 HKD