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Round|Lab Grown|IGI

3.40ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG728580866

Certificate IGI LG728580866

Diamond specifications and retailer prices

From $1,016 USD
Save $15,614 USD (94%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $16,630 USD at Brilliant Earth
View at Brilliant Earth

About this 3.4ct lab-grown round diamond

This 3.4ct 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 LG728580866 or 728580866. Listed at 27 retailers, with prices from $1,016 to $16,630 at Brilliant Earth, a $15,614 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

3.40
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728580866
Dimensions9.61 × 9.67 × 5.97 mm
L/W Ratio1.01
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
9.61 mm9.67 mm3.40 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728580866
Side View
Table 56.0%Crown 35.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.0%

Caratlytics Score

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

Price History

Last verified: Sep 28
Current: $16,630 USD|Low: $811 USD|High: $16,630 USD|Avg: $3,425 USD
Brilliant Earth
Retailer 2
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Retailer 25
October 1, 2026
Retailer 8$1,016 USD
Retailer 4$1,105 USD
Retailer 2$1,137 USD
Retailer 7$1,162 USD
Retailer 19$1,415 USD
Retailer 15$1,424 USD
Retailer 18$1,434 USD
Retailer 3$1,456 USD
Retailer 21$1,700 USD
Retailer 11$1,805 USD
Retailer 13$1,849 USD
Retailer 5$2,209 USD
Retailer 17$2,463 USD
Retailer 10$2,664 USD
Retailer 23$2,664 USD
Retailer 6$2,880 USD
Retailer 9$3,022 USD
Retailer 22$4,045 USD
Retailer 16$4,049 USD
Retailer 25$4,141 USD
Retailer 14$4,373 USD
Retailer 20$5,641 USD
Retailer 12$5,865 USD
Retailer 24$10,899 USD
Brilliant Earth$16,630 USD

41 data points across 25 retailers

27 retailers$1,016 USD to $16,630 USD

A
Cheapest Retailer
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$1,016 USD
A
Retailer 2
-
$1,105 USD
View
Price last confirmed 7 days ago
A
Retailer 3
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$1,137 USD
View
A
Retailer 4
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$1,162 USD
View
A
Retailer 5
-
$1,415 USD
£1,114 GBP
View
A
Retailer 6
-
$1,424 USD
View
A
Retailer 7
-
$1,434 USD
HK$11,200 HKD
View
A
Retailer 8
-
$1,456 USD
View
A
Retailer 9
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$1,704 USD
£1,342 GBP
View
A
Retailer 10
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$1,805 USD
View
A
Retailer 11
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$1,849 USD
€1,761 EUR
View
A
Retailer 12
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$2,209 USD
View
A
Retailer 13
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$2,463 USD
View
A
Retailer 14
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$2,664 USD
ZAR 43,035 ZAR
View
Price last confirmed 19 days ago
A
Retailer 15
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$2,664 USD
A$4,099 AUD
View
A
Retailer 16
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$2,880 USD
View
A
Retailer 17
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$3,022 USD
View
B+
Retailer 18
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$3,797 USD
View
B+
Retailer 19
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$4,045 USD
£3,185 GBP
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B+
Retailer 20
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$4,049 USD
View
B+
Retailer 21
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$4,110 USD
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B+
Retailer 22
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$4,141 USD
SGD 5,596 SGD
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B+
Retailer 23
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$4,462 USD
View
B+
Retailer 24
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$5,641 USD
A$8,679 AUD
View
B+
Retailer 25
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$5,865 USD
View
Price last confirmed 22 days ago
B
Retailer 26
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$10,899 USD
View
Most Expensive
B
Brilliant Earth
15744701A · Oct 1
$16,630 USD
View
26 more retailers have this diamond
Prices start from $1,016 USDSave up to $15,614 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
3.40ct Round
$1,016 USD