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Radiant|Lab Grown|IGI

3.11ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG728578054

Certificate IGI LG728578054

Diamond specifications and retailer prices

From $1,471 USD
Save $10,879 USD (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $12,350 USD at Brilliant Earth
View at Brilliant Earth

About this 3.11ct lab-grown radiant diamond

This 3.11ct lab-grown radiant 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 LG728578054 or 728578054. Listed at 26 retailers, with prices from $1,471 to $12,350 at Brilliant Earth, a $10,879 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

3.11
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728578054
Dimensions10.21 × 7.36 × 4.85 mm
L/W Ratio1.39
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
10.21 mm7.36 mm3.11 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728578054
Side View
Table 63.0%Crown 41.7°Girdle: Slightly ThickPavilion 33.9°Culet: NoneDepth 65.9%

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 30
Current: $12,350 USD|Low: $1,175 USD|High: $12,360 USD|Avg: $4,154 USD|-0.1%
Brilliant Earth
Retailer 2
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Retailer 23
October 1, 2026
Retailer 16$1,189 USD
Retailer 20$1,875 USD
Retailer 19$1,890 USD
Retailer 7$1,923 USD
Retailer 14$2,072 USD
Retailer 18$2,086 USD
Retailer 21$2,467 USD
Retailer 5$2,686 USD
Retailer 22$3,097 USD
Retailer 9$3,132 USD
Retailer 3$3,858 USD
Retailer 23$3,891 USD
Retailer 10$4,115 USD
Retailer 11$4,447 USD
Retailer 13$4,933 USD
Retailer 8$4,971 USD
Retailer 15$5,250 USD
Retailer 2$5,581 USD
Retailer 4$5,850 USD
Retailer 6$6,025 USD
Retailer 12$6,437 USD
Retailer 17$6,914 USD
Brilliant Earth$12,350 USD

41 data points across 23 retailers

26 retailers$1,471 USD to $12,350 USD

A
Cheapest Retailer
-
$1,471 USD
A
Retailer 2
-
$1,601 USD
View
A
Retailer 3
-
$1,683 USD
View
A
Retailer 4
-
$1,875 USD
View
A
Retailer 5
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$1,890 USD
View
A
Retailer 6
-
$1,923 USD
View
A
Retailer 7
-
$2,072 USD
View
A
Retailer 8
-
$2,086 USD
HK$16,300 HKD
View
A
Retailer 9
-
$2,473 USD
£1,947 GBP
View
A
Retailer 10
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$2,686 USD
€2,558 EUR
View
A
Retailer 11
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$3,097 USD
View
A
Retailer 12
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$3,132 USD
View
A
Retailer 13
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$3,199 USD
View
A
Retailer 14
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$3,858 USD
A$5,935 AUD
View
A
Retailer 15
-
$3,891 USD
ZAR 62,853 ZAR
View
B+
Retailer 16
-
$4,115 USD
£3,240 GBP
View
B+
Retailer 17
-
$4,447 USD
View
B+
Retailer 18
-
$4,933 USD
£3,884 GBP
View
B+
Retailer 19
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$4,971 USD
View
B+
Retailer 20
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$5,250 USD
View
B+
Retailer 21
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$5,581 USD
View
B+
Retailer 22
-
$5,850 USD
View
B+
Retailer 23
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$6,025 USD
SGD 8,142 SGD
View
B+
Retailer 24
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$6,568 USD
View
B+
Retailer 25
-
$6,914 USD
A$10,637 AUD
View
Most Expensive
B
Brilliant Earth
15743649A · Sep 30
$12,350 USD
View
25 more retailers have this diamond
Prices start from $1,471 USDSave up to $10,879 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
3.11ct Radiant
$1,471 USD