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Radiant|Lab Grown|IGI

3.43ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG700552509

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

Certificate IGI LG700552509

Diamond specifications and retailer prices

From $429 USD
As of October 27, 2026
Save $4,911 USD (92%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,340 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.43ct lab-grown radiant diamond

This 3.43ct 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 LG700552509 or 700552509. Listed at 11 retailers as of October 27, 2026, with prices from $429 to $5,340, a $4,911 spread on the same certified stone. Brilliant Earth lists it at $5,340. 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

3.43
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.9°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700552509
Dimensions10.83 × 7.30 × 5.02 mm
L/W Ratio1.48
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.83 mm7.30 mm3.43 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700552509
Side View
Table 66.0%Crown 45.9°Girdle: MediumPavilion 35.9°Culet: NoneDepth 68.8%

Caratlytics Score

How it works →
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 27
Current: $5,340 USD|Low: $421 USD|High: $5,500 USD|Avg: $1,956 USD|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 10$429 USD
Retailer 9$480 USD
Retailer 5$800 USD
Retailer 7$837 USD
Retailer 4$840 USD
Retailer 6$1,491 USD
Retailer 3$1,554 USD
Retailer 11$1,887 USD
Retailer 2$2,168 USD
Retailer 8$3,810 USD
Brilliant Earth$5,340 USD

23 data points across 11 retailers

11 retailers$429 USD to $5,340 USD

A
Cheapest Retailer
-
$429 USD
A
Retailer 2
-
$480 USD
View
A
Retailer 3
-
$800 USD
£630 GBP
View
Price last confirmed 7 days ago
B+
Retailer 4
-
$837 USD
View
B+
Retailer 5
-
$840 USD
View
B+
Retailer 6
-
$1,491 USD
View
B+
Retailer 7
-
$1,554 USD
View
B+
Retailer 8
-
$1,887 USD
View
B
Retailer 9
-
$2,168 USD
£1,707 GBP
View
B
Retailer 10
-
$3,810 USD
View
Most Expensive
B
Brilliant Earth
14817403Y · Oct 28
$5,340 USD
View
10 more retailers have this diamond
Prices start from $429 USDSave up to $4,911 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.43ct Radiant
$429 USD