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Round|Lab Grown|IGI

3.10ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG691590668

Shape and cutting style on the report: Round brilliant

Certificate IGI LG691590668

Diamond specifications and retailer prices

From HK$3,303 HKD
$421 USD
As of October 29, 2026
Save HK$18,037 HKD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$21,340 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.1ct lab-grown round diamond

This 3.1ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG691590668 or 691590668. Listed at 15 retailers as of October 29, 2026, with prices from HK$3,303 to HK$21,340, a HK$18,037 spread on the same certified stone. Brilliant Earth lists it at HK$21,340. 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

3.10
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691590668
Dimensions9.40 × 9.36 × 5.75 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.40 mm9.36 mm3.10 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691590668
Side View
Table 58.0%Crown 33.4°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.3%

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 29
Current: HK$21,340 HKD|Low: HK$3,170 HKD|High: HK$30,520 HKD|Avg: HK$8,740 HKD|-30.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 9HK$3,303 HKD
Retailer 3HK$4,095 HKD
Retailer 10HK$4,095 HKD
Retailer 11HK$5,492 HKD
Retailer 5HK$6,541 HKD
Retailer 2HK$6,730 HKD
Retailer 12HK$7,069 HKD
Retailer 4HK$8,850 HKD
Retailer 6HK$9,628 HKD
Retailer 8HK$9,839 HKD
Retailer 7HK$15,066 HKD
Brilliant EarthHK$21,340 HKD

43 data points across 12 retailers

15 retailersHK$3,303 HKD to HK$21,340 HKD

A
Cheapest Retailer
-
HK$3,303 HKD
$421 USD
A
Retailer 2
-
HK$3,703 HKD
$472 USD
View
A
Retailer 3
-
HK$4,095 HKD
$522 USD
View
A
Retailer 4
-
HK$4,095 HKD
$522 USD
View
B+
Retailer 5
-
HK$5,492 HKD
$700 USD
View
A
Retailer 6
-
HK$6,541 HKD
€794 EUR
View
A
Retailer 7
-
HK$6,730 HKD
£675 GBP
View
A
Retailer 8
-
HK$7,069 HKD
$901 USD
View
B+
Retailer 9
-
HK$8,850 HKD
$1,128 USD
View
B+
Retailer 10
-
HK$9,628 HKD
A$1,888 AUD
View
B+
Retailer 11
-
HK$9,839 HKD
$1,254 USD
View
Retailer 12
-
HK$10,568 HKD
$1,347 USD
View
Price last confirmed 45 days ago
B
Retailer 13
-
HK$13,165 HKD
$1,678 USD
View
B
Retailer 14
-
HK$15,066 HKD
£1,512 GBP
View
Most Expensive
B
Brilliant Earth
13678752A · Oct 30
HK$21,340 HKD
$2,720 USD
View
14 more retailers have this diamond
Prices start from HK$3,303 HKDSave up to HK$18,037 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
3.10ct Round
HK$3,303 HKD