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Round|Lab Grown|IGI

4.00ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG728578059

Certificate IGI LG728578059

Diamond specifications and retailer prices

From $1,940 USD
£1,527 GBP
Save $11,100 USD (85%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $13,040 USD at Brilliant Earth
View at Brilliant Earth

About this 4ct lab-grown round diamond

This 4ct 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 LG728578059 or 728578059. Listed at 26 retailers, with prices from $1,940 to $13,040 at Brilliant Earth, a $11,100 spread on the same certified stone. 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

4.00
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728578059
Dimensions10.17 × 10.21 × 6.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
10.17 mm10.21 mm4.00 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728578059
Side View
Table 55.0%Crown 34.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $13,040 USD|Low: $1,835 USD|High: $13,040 USD|Avg: $5,280 USD
Brilliant Earth
Retailer 2
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Retailer 26
October 1, 2026
Retailer 20$1,940 USD
Retailer 12$2,142 USD
Retailer 2$2,398 USD
Retailer 17$2,450 USD
Retailer 19$2,497 USD
Retailer 9$2,640 USD
Retailer 14$2,994 USD
Retailer 5$3,021 USD
Retailer 24$3,395 USD
Retailer 7$3,415 USD
Retailer 22$3,605 USD
Retailer 13$3,882 USD
Retailer 26$3,985 USD
Retailer 11$4,382 USD
Retailer 25$5,193 USD
Retailer 4$5,329 USD
Retailer 8$6,477 USD
Retailer 3$6,822 USD
Retailer 15$7,047 USD
Retailer 18$7,169 USD
Retailer 10$8,687 USD
Retailer 16$8,730 USD
Retailer 21$10,375 USD
Retailer 6$12,498 USD
Retailer 23$12,766 USD
Brilliant Earth$13,040 USD

31 data points across 26 retailers

26 retailers$1,940 USD to $13,040 USD

A
Cheapest Retailer
-
$1,940 USD
£1,527 GBP
A
Retailer 2
-
$2,142 USD
View
A
Retailer 3
-
$2,398 USD
View
A
Retailer 4
-
$2,450 USD
View
A
Retailer 5
-
$2,497 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$2,640 USD
View
A
Retailer 7
-
$2,994 USD
View
A
Retailer 8
-
$3,021 USD
HK$23,600 HKD
View
A
Retailer 9
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$3,403 USD
£2,679 GBP
View
A
Retailer 10
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$3,415 USD
View
A
Retailer 11
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$3,605 USD
View
A
Retailer 12
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$3,882 USD
€3,697 EUR
View
A
Retailer 13
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$3,985 USD
View
A
Retailer 14
-
$4,382 USD
View
A
Retailer 15
-
$5,193 USD
ZAR 83,887 ZAR
View
A
Retailer 16
-
$5,329 USD
A$8,198 AUD
View
A
Retailer 17
-
$6,477 USD
View
A
Retailer 18
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$6,822 USD
£5,372 GBP
View
B+
Retailer 19
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$7,047 USD
View
B+
Retailer 20
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$7,169 USD
View
B+
Retailer 21
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$8,687 USD
View
B+
Retailer 22
-
$8,730 USD
SGD 11,797 SGD
View
B+
Retailer 23
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$10,375 USD
A$15,961 AUD
View
B
Retailer 24
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$12,753 USD
View
B
Retailer 25
-
$12,766 USD
View
Most Expensive
B
Brilliant Earth
15743825A · Sep 29
$13,040 USD
View
25 more retailers have this diamond
Prices start from $1,940 USDSave up to $11,100 USD

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.

A
4.00ct Round
$1,940 USD