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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 $843 NZD
$475 USD
As of October 30, 2026
Save $5,385 NZD (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,228 NZD 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 $843 to $6,228, a $5,385 spread on the same certified stone. Brilliant Earth lists it at $6,228. 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: $6,228 NZD|Low: $809 NZD|High: $10,025 NZD|Avg: $2,756 NZD|-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$843 NZD
Retailer 3$944 NZD
Retailer 9$944 NZD
Retailer 17$1,045 NZD
Retailer 18$1,136 NZD
Retailer 12$1,295 NZD
Retailer 6$1,437 NZD
Retailer 14$1,520 NZD
Retailer 2$1,735 NZD
Retailer 11$2,347 NZD
Retailer 4$2,376 NZD
Retailer 7$3,087 NZD
Retailer 5$3,313 NZD
Retailer 10$3,412 NZD
Retailer 8$3,676 NZD
Retailer 15$3,860 NZD
Retailer 13$5,908 NZD
Brilliant Earth$6,228 NZD

44 data points across 18 retailers

18 retailers$843 NZD to $6,228 NZD

A
Cheapest Retailer
-
$843 NZD
$475 USD
A
Retailer 2
-
$944 NZD
$532 USD
View
Final sale: no returns
A
Retailer 3
-
$944 NZD
$532 USD
View
A
Retailer 4
-
$1,045 NZD
$589 USD
View
A
Retailer 5
-
$1,136 NZD
HK$5,000 HKD
View
A
Retailer 6
-
$1,295 NZD
$730 USD
View
B+
Retailer 7
-
$1,437 NZD
$810 USD
View
Retailer 8
-
$1,520 NZD
€816 EUR
View
Price last confirmed 7 days ago
A
Retailer 9
-
$1,735 NZD
£770 GBP
View
B+
Retailer 10
-
$2,347 NZD
$1,323 USD
View
B+
Retailer 11
-
$2,376 NZD
$1,339 USD
View
B
Retailer 12
-
$3,087 NZD
$1,740 USD
View
B+
Retailer 13
-
$3,313 NZD
SGD 2,523 SGD
View
B+
Retailer 14
-
$3,412 NZD
$1,923 USD
View
B
Retailer 15
-
$3,676 NZD
$2,072 USD
View
Retailer 16
-
$3,860 NZD
£1,713 GBP
View
Price last confirmed 10 days ago
B
Retailer 17
-
$5,908 NZD
$3,330 USD
View
Most Expensive
B
Brilliant Earth
20386828A · Oct 30
$6,228 NZD
$3,510 USD
View
17 more retailers have this diamond
Prices start from $843 NZDSave up to $5,385 NZD

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
$843 NZD