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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 HK$2,785 HKD
$355 USD
As of October 30, 2026
Save HK$30,088 HKD (92%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$32,873 HKD at Brilliant Earth · As of October 30, 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 HK$2,785 to HK$32,873, a HK$30,088 spread on the same certified stone. Brilliant Earth lists it at HK$32,873. 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: HK$32,873 HKD|Low: HK$2,597 HKD|High: HK$37,973 HKD|Avg: HK$9,329 HKD|-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 14HK$2,785 HKD
Retailer 10HK$3,107 HKD
Retailer 5HK$3,225 HKD
Retailer 6HK$3,452 HKD
Retailer 16HK$3,452 HKD
Retailer 4HK$4,629 HKD
Retailer 15HK$4,717 HKD
Retailer 13HK$5,217 HKD
Retailer 7HK$5,939 HKD
Retailer 2HK$6,055 HKD
Retailer 12HK$6,208 HKD
Retailer 3HK$10,113 HKD
Retailer 18HK$11,086 HKD
Retailer 11HK$11,411 HKD
Retailer 9HK$12,208 HKD
Retailer 8HK$13,233 HKD
Retailer 17HK$13,551 HKD
Retailer 19HK$19,575 HKD
Brilliant EarthHK$32,873 HKD

32 data points across 19 retailers

19 retailersHK$2,785 HKD to HK$32,873 HKD

A
Cheapest Retailer
-
HK$2,785 HKD
$355 USD
A
Retailer 2
-
HK$3,107 HKD
$396 USD
View
Final sale: no returns
A
Retailer 3
-
HK$3,225 HKD
$411 USD
View
A
Retailer 4
-
HK$3,452 HKD
$440 USD
View
A
Retailer 5
-
HK$3,452 HKD
$440 USD
View
B+
Retailer 6
-
HK$4,629 HKD
$590 USD
View
A
Retailer 7
-
HK$4,717 HKD
£473 GBP
View
A
Retailer 8
-
HK$5,217 HKD
$665 USD
View
A
Retailer 9
-
HK$5,939 HKD
$757 USD
View
A
Retailer 10
-
HK$6,055 HKD
€735 EUR
View
A
Retailer 11
-
HK$6,208 HKD
£623 GBP
View
B+
Retailer 12
-
HK$10,113 HKD
$1,289 USD
View
B+
Retailer 13
-
HK$11,086 HKD
$1,413 USD
View
B+
Retailer 14
-
HK$11,411 HKD
$1,454 USD
View
B
Retailer 15
-
HK$12,208 HKD
$1,556 USD
View
B+
Retailer 16
-
HK$13,233 HKD
$1,687 USD
View
B+
Retailer 17
-
HK$13,551 HKD
£1,360 GBP
View
B
Retailer 18
-
HK$19,575 HKD
$2,495 USD
View
Most Expensive
B
Brilliant Earth
16226177A · Oct 30
HK$32,873 HKD
$4,190 USD
View
18 more retailers have this diamond
Prices start from HK$2,785 HKDSave up to HK$30,088 HKD

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
HK$2,785 HKD