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Radiant|Lab Grown|IGI

3.09ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG710539520

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

Certificate IGI LG710539520

Diamond specifications and retailer prices

From $630 NZD
$355 USD
As of October 30, 2026
Save $6,804 NZD (92%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,434 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.09ct lab-grown radiant diamond

This 3.09ct 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 LG710539520 or 710539520. Listed at 19 retailers as of October 30, 2026, with prices from $630 to $7,434, a $6,804 spread on the same certified stone. Brilliant Earth lists it at $7,434. 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

3.09
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.1°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG710539520
Dimensions10.16 × 7.19 × 4.99 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
10.16 mm7.19 mm3.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG710539520
Side View
Table 67.0%Crown 43.1°Girdle: MED-STKPavilion 36.2°Culet: NoneDepth 69.4%

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: $7,434 NZD|Low: $587 NZD|High: $8,588 NZD|Avg: $2,110 NZD|-13.4%
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
October 31, 2026
Retailer 14$630 NZD
Retailer 10$703 NZD
Retailer 5$729 NZD
Retailer 6$781 NZD
Retailer 16$781 NZD
Retailer 4$1,047 NZD
Retailer 15$1,067 NZD
Retailer 13$1,180 NZD
Retailer 7$1,343 NZD
Retailer 2$1,369 NZD
Retailer 12$1,404 NZD
Retailer 3$2,287 NZD
Retailer 18$2,507 NZD
Retailer 11$2,581 NZD
Retailer 9$2,761 NZD
Retailer 8$2,993 NZD
Retailer 17$3,065 NZD
Retailer 19$4,427 NZD
Brilliant Earth$7,434 NZD

32 data points across 19 retailers

19 retailers$630 NZD to $7,434 NZD

A
Cheapest Retailer
-
$630 NZD
$355 USD
A
Retailer 2
-
$703 NZD
$396 USD
View
Final sale: no returns
A
Retailer 3
-
$729 NZD
$411 USD
View
A
Retailer 4
-
$781 NZD
$440 USD
View
A
Retailer 5
-
$781 NZD
$440 USD
View
B+
Retailer 6
-
$1,047 NZD
$590 USD
View
A
Retailer 7
-
$1,067 NZD
£473 GBP
View
A
Retailer 8
-
$1,180 NZD
$665 USD
View
A
Retailer 9
-
$1,343 NZD
$757 USD
View
A
Retailer 10
-
$1,369 NZD
€735 EUR
View
A
Retailer 11
-
$1,404 NZD
£623 GBP
View
B+
Retailer 12
-
$2,287 NZD
$1,289 USD
View
B+
Retailer 13
-
$2,507 NZD
$1,413 USD
View
B+
Retailer 14
-
$2,581 NZD
$1,454 USD
View
B
Retailer 15
-
$2,761 NZD
$1,556 USD
View
B+
Retailer 16
-
$2,993 NZD
$1,687 USD
View
B+
Retailer 17
-
$3,065 NZD
£1,360 GBP
View
B
Retailer 18
-
$4,427 NZD
$2,495 USD
View
Most Expensive
B
Brilliant Earth
16226177A · Oct 31
$7,434 NZD
$4,190 USD
View
18 more retailers have this diamond
Prices start from $630 NZDSave up to $6,804 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
3.09ct Radiant
$630 NZD