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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 £320 GBP
$429 USD
As of October 30, 2026
Save £2,523 GBP (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,844 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 29, 2026, with prices from £320 to £2,844, a £2,523 spread on the same certified stone. Do Amore Diamonds lists it at £2,844. 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
Colour
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 30
Current: £2,844 GBP|Low: £314 GBP|High: £4,105 GBP|Avg: £1,436 GBP|-2.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 10£320 GBP
Retailer 9£358 GBP
Retailer 4£599 GBP
Retailer 8£625 GBP
Retailer 6£627 GBP
Retailer 7£1,113 GBP
Retailer 3£1,160 GBP
Retailer 11£1,408 GBP
Retailer 5£1,618 GBP
Retailer 2£2,590 GBP
Do Amore Diamonds£2,844 GBP

23 data points across 11 retailers

11 retailers£320 GBP to £2,844 GBP

A
Cheapest Retailer
-
£320 GBP
$429 USD
A
Retailer 2
-
£358 GBP
$480 USD
View
A
Retailer 3
-
£599 GBP
View
B+
Retailer 4
-
£625 GBP
$837 USD
View
B+
Retailer 5
-
£627 GBP
$840 USD
View
B+
Retailer 6
-
£1,113 GBP
$1,491 USD
View
B+
Retailer 7
-
£1,160 GBP
$1,554 USD
View
B+
Retailer 8
-
£1,408 GBP
$1,887 USD
View
B
Retailer 9
-
£1,618 GBP
View
B
Retailer 10
-
£2,590 GBP
$3,470 USD
View
Most Expensive
B
Do Amore Diamonds
27-7F95F7640 · Oct 29
£2,844 GBP
$3,810 USD
View
10 more retailers have this diamond
Prices start from £320 GBPSave up to £2,523 GBP

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
£320 GBP