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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 $2,445 SGD
$1,908 USD
As of October 29, 2026
Save $27,777 SGD (92%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $30,222 SGD 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 LG768630985 or 768630985. Listed at 16 retailers as of October 29, 2026, with prices from $2,445 to $30,222, a $27,777 spread on the same certified stone. Brilliant Earth lists it at $30,222. 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: $30,222 SGD|Low: $2,401 SGD|High: $31,145 SGD|Avg: $7,702 SGD|-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
October 29, 2026
Retailer 11$2,445 SGD
Retailer 16$2,661 SGD
Retailer 12$2,962 SGD
Retailer 8$3,076 SGD
Retailer 5$3,678 SGD
Retailer 15$4,304 SGD
Retailer 10$4,442 SGD
Retailer 14$4,658 SGD
Retailer 7$4,705 SGD
Retailer 9$5,056 SGD
Retailer 3$6,536 SGD
Retailer 4$6,870 SGD
Retailer 2$8,541 SGD
Retailer 6$13,856 SGD
Retailer 13$16,829 SGD
Brilliant Earth$30,222 SGD

32 data points across 16 retailers

16 retailers$2,445 SGD to $30,222 SGD

A
Cheapest Retailer
-
$2,445 SGD
$1,908 USD
A
Retailer 2
-
$2,661 SGD
$2,076 USD
View
A
Retailer 3
-
$2,962 SGD
$2,311 USD
View
A
Retailer 4
-
$3,076 SGD
$2,400 USD
View
Final sale: no returns
A
Retailer 5
-
$3,678 SGD
$2,870 USD
View
A
Retailer 6
-
$4,304 SGD
$3,358 USD
View
A
Retailer 7
-
$4,442 SGD
$3,466 USD
View
A
Retailer 8
-
$4,658 SGD
$3,634 USD
View
A
Retailer 9
-
$4,705 SGD
$3,671 USD
View
A
Retailer 10
-
$5,056 SGD
€3,757 EUR
View
A
Retailer 11
-
$6,536 SGD
$5,100 USD
View
Retailer 12
-
$6,870 SGD
A$8,246 AUD
View
Price last confirmed 7 days ago
B+
Retailer 13
-
$8,541 SGD
£5,247 GBP
View
Retailer 14
-
$13,856 SGD
A$16,632 AUD
View
Price last confirmed 21 days ago
B+
Retailer 15
-
$16,829 SGD
$13,130 USD
View
Most Expensive
B
Brilliant Earth
18293994Y · Oct 29
$30,222 SGD
$23,580 USD
View
15 more retailers have this diamond
Prices start from $2,445 SGDSave up to $27,777 SGD

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
$2,445 SGD