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Radiant|Lab Grown|IGI

3.50ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG698530204

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

Certificate IGI LG698530204

Diamond specifications and retailer prices

From $676 AUD
$475 USD
As of October 30, 2026
Save $4,321 AUD (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,997 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.5ct lab-grown radiant diamond

This 3.5ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG698530204 or 698530204. Listed at 18 retailers as of October 30, 2026, with prices from $676 to $4,997, a $4,321 spread on the same certified stone. Brilliant Earth lists it at $4,997. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.2°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG698530204
Dimensions10.51 × 7.47 × 5.04 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.51 mm7.47 mm3.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG698530204
Side View
Table 70.0%Crown 49.2°Girdle: Slightly ThickPavilion 35.5°Culet: NoneDepth 67.5%

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: $4,997 AUD|Low: $649 AUD|High: $8,043 AUD|Avg: $2,211 AUD|-37.9%
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
October 31, 2026
Retailer 16$676 AUD
Retailer 3$757 AUD
Retailer 9$757 AUD
Retailer 17$839 AUD
Retailer 18$911 AUD
Retailer 12$1,039 AUD
Retailer 6$1,153 AUD
Retailer 14$1,220 AUD
Retailer 2$1,392 AUD
Retailer 11$1,883 AUD
Retailer 4$1,906 AUD
Retailer 7$2,477 AUD
Retailer 5$2,658 AUD
Retailer 10$2,738 AUD
Retailer 8$2,949 AUD
Retailer 15$3,097 AUD
Retailer 13$4,741 AUD
Brilliant Earth$4,997 AUD

44 data points across 18 retailers

18 retailers$676 AUD to $4,997 AUD

A
Cheapest Retailer
-
$676 AUD
$475 USD
A
Retailer 2
-
$757 AUD
$532 USD
View
Final sale: no returns
A
Retailer 3
-
$757 AUD
$532 USD
View
A
Retailer 4
-
$839 AUD
$589 USD
View
A
Retailer 5
-
$911 AUD
HK$5,000 HKD
View
A
Retailer 6
-
$1,039 AUD
$730 USD
View
B+
Retailer 7
-
$1,153 AUD
$810 USD
View
Retailer 8
-
$1,220 AUD
€816 EUR
View
Price last confirmed 7 days ago
A
Retailer 9
-
$1,392 AUD
£770 GBP
View
B+
Retailer 10
-
$1,883 AUD
$1,323 USD
View
B+
Retailer 11
-
$1,906 AUD
$1,339 USD
View
B
Retailer 12
-
$2,477 AUD
$1,740 USD
View
B+
Retailer 13
-
$2,658 AUD
SGD 2,523 SGD
View
B+
Retailer 14
-
$2,738 AUD
$1,923 USD
View
B
Retailer 15
-
$2,949 AUD
$2,072 USD
View
Retailer 16
-
$3,097 AUD
£1,713 GBP
View
Price last confirmed 10 days ago
B
Retailer 17
-
$4,741 AUD
$3,330 USD
View
Most Expensive
B
Brilliant Earth
20386828A · Oct 30
$4,997 AUD
$3,510 USD
View
17 more retailers have this diamond
Prices start from $676 AUDSave up to $4,321 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
3.50ct Radiant
$676 AUD