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Radiant|Lab Grown|IGI

3.51ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG673412609

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

Certificate IGI LG673412609

Diamond specifications and retailer prices

From $1,812 AUD
$1,273 USD
As of October 30, 2026
Save $10,673 AUD (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $12,485 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.51ct lab-grown radiant diamond

This 3.51ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG673412609 or 673412609. Listed at 23 retailers as of October 30, 2026, with prices from $1,812 to $12,485, a $10,673 spread on the same certified stone. Brilliant Earth lists it at $12,485. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.51
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.3°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG673412609
Dimensions10.24 × 7.14 × 5.11 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.24 mm7.14 mm3.51 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG673412609
Side View
Table 65.0%Crown 27.3°Girdle: Slightly ThickPavilion 32.4°Culet: NoneDepth 71.6%

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: $12,485 AUD|Low: $1,740 AUD|High: $16,642 AUD|Avg: $4,761 AUD|-25.0%
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 30, 2026
Retailer 20$1,812 AUD
Retailer 7$2,029 AUD
Retailer 10$2,103 AUD
Retailer 21$2,103 AUD
Retailer 2$2,321 AUD
Retailer 6$2,349 AUD
Retailer 9$2,565 AUD
Retailer 13$2,962 AUD
Retailer 17$3,007 AUD
Retailer 18$3,691 AUD
Retailer 3$3,918 AUD
Retailer 19$4,755 AUD
Retailer 15$4,881 AUD
Retailer 11$5,077 AUD
Retailer 8$5,936 AUD
Retailer 5$6,032 AUD
Retailer 4$6,573 AUD
Retailer 16$6,791 AUD
Retailer 12$7,038 AUD
Retailer 14$7,377 AUD
Brilliant Earth$12,485 AUD

36 data points across 21 retailers

23 retailers$1,812 AUD to $12,485 AUD

A
Cheapest Retailer
-
$1,812 AUD
$1,273 USD
A
Retailer 2
-
$1,972 AUD
$1,385 USD
View
A
Retailer 3
-
$2,029 AUD
$1,425 USD
View
Final sale: no returns
A
Retailer 4
-
$2,103 AUD
$1,477 USD
View
Retailer 5
-
$2,103 AUD
$1,477 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$2,321 AUD
£1,284 GBP
View
A
Retailer 7
-
$2,349 AUD
$1,650 USD
View
A
Retailer 8
-
$2,565 AUD
$1,802 USD
View
A
Retailer 9
-
$2,962 AUD
£1,638 GBP
View
A
Retailer 10
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$3,007 AUD
$2,112 USD
View
Retailer 11
-
$3,691 AUD
€2,469 EUR
View
Price last confirmed 7 days ago
A
Retailer 12
-
$3,918 AUD
$2,752 USD
View
A
Retailer 13
-
$3,941 AUD
$2,768 USD
View
Retailer 14
-
$4,755 AUD
View
Price last confirmed 8 days ago
A
Retailer 15
-
$4,881 AUD
ZAR 55,392 ZAR
View
B+
Retailer 16
-
$5,077 AUD
£2,808 GBP
View
B+
Retailer 17
-
$5,936 AUD
$4,170 USD
View
B+
Retailer 18
-
$6,032 AUD
$4,237 USD
View
B+
Retailer 19
-
$6,573 AUD
$4,617 USD
View
B+
Retailer 20
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$6,791 AUD
£3,756 GBP
View
B+
Retailer 21
-
$7,038 AUD
SGD 6,681 SGD
View
B+
Retailer 22
-
$7,377 AUD
$5,182 USD
View
Most Expensive
B
Brilliant Earth
21311697A · Oct 30
$12,485 AUD
$8,770 USD
View
22 more retailers have this diamond
Prices start from $1,812 AUDSave up to $10,673 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
3.51ct Radiant
$1,812 AUD