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Radiant|Lab Grown|IGI

3.11ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG737568554

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG737568554

Diamond specifications and retailer prices

From $1,780 AUD
$1,250 USD
As of October 30, 2026
Save $11,043 AUD (86%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $12,822 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

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 LG737568554 or 737568554. Listed at 28 retailers as of October 30, 2026, with prices from $1,780 to $12,822, a $11,043 spread on the same certified stone. Blue Nile lists it at $12,822. 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
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737568554
Dimensions10.36 × 7.37 × 4.79 mm
L/W Ratio1.41
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
10.36 mm7.37 mm3.11 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737568554
Side View
Table 63.0%Crown 40.2°Girdle: MediumPavilion 34.1°Culet: NoneDepth 65.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $12,822 AUD|Low: $1,780 AUD|High: $12,834 AUD|Avg: $4,301 AUD|-0.1%
Blue Nile
Retailer 2
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Retailer 25
November 1, 2026
Retailer 8$1,780 AUD
Retailer 2$1,936 AUD
Retailer 24$1,993 AUD
Retailer 16$2,064 AUD
Retailer 25$2,370 AUD
Retailer 5$2,402 AUD
Retailer 10$2,515 AUD
Retailer 20$2,909 AUD
Retailer 19$3,103 AUD
Retailer 23$3,302 AUD
Retailer 4$3,848 AUD
Retailer 21$3,871 AUD
Retailer 3$4,355 AUD
Retailer 22$4,663 AUD
Retailer 17$4,794 AUD
Retailer 15$4,990 AUD
Retailer 6$5,925 AUD
Retailer 9$6,471 AUD
Retailer 13$6,633 AUD
Retailer 14$7,243 AUD
Retailer 12$7,262 AUD
Retailer 11$7,882 AUD
Retailer 18$8,136 AUD
Retailer 7$11,588 AUD
Blue Nile$12,822 AUD

28 data points across 25 retailers

28 retailers$1,780 AUD to $12,822 AUD

A
Cheapest Retailer
-
$1,780 AUD
$1,250 USD
A
Retailer 2
-
$1,936 AUD
$1,360 USD
View
A
Retailer 3
-
$1,993 AUD
$1,400 USD
View
Final sale: no returns
A
Retailer 4
-
$2,064 AUD
$1,450 USD
View
A
Retailer 5
-
$2,370 AUD
$1,665 USD
View
A
Retailer 6
-
$2,402 AUD
$1,687 USD
View
A
Retailer 7
-
$2,515 AUD
HK$13,800 HKD
View
A
Retailer 8
-
$2,909 AUD
£1,609 GBP
View
A
Retailer 9
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$3,103 AUD
$2,180 USD
View
Retailer 10
-
$3,266 AUD
£1,807 GBP
View
Price last confirmed 17 days ago
A
Retailer 11
-
$3,302 AUD
€2,209 EUR
View
A
Retailer 12
-
$3,848 AUD
$2,703 USD
View
A
Retailer 13
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$3,871 AUD
$2,719 USD
View
A
Retailer 14
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$4,355 AUD
$3,059 USD
View
A
Retailer 15
-
$4,663 AUD
View
A
Retailer 16
-
$4,794 AUD
ZAR 54,407 ZAR
View
B+
Retailer 17
-
$4,990 AUD
£2,760 GBP
View
B+
Retailer 18
-
$5,844 AUD
$4,105 USD
View
B+
Retailer 19
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$5,925 AUD
$4,162 USD
View
B+
Retailer 20
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$6,471 AUD
$4,545 USD
View
B+
Retailer 21
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$6,633 AUD
£3,669 GBP
View
B+
Retailer 22
-
$7,243 AUD
$5,088 USD
View
B+
Retailer 23
-
$7,262 AUD
SGD 6,893 SGD
View
B+
Retailer 24
-
$7,882 AUD
$5,537 USD
View
Retailer 25
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$8,136 AUD
$5,715 USD
View
Price last confirmed 11 days ago
Retailer 26
-
$9,751 AUD
View
Price last confirmed 33 days ago
B
Retailer 27
-
$11,588 AUD
$8,140 USD
View
Most Expensive
B
Blue Nile
27482522 · Oct 31
$12,822 AUD
$9,007 USD
View
27 more retailers have this diamond
Prices start from $1,780 AUDSave up to $11,043 AUD

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
3.11ct Radiant
$1,780 AUD