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3.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG819620033

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819620033

Diamond specifications and retailer prices

From HK$2,919 HKD
$372 USD
As of November 1, 2026
Save HK$16,226 HKD (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$19,144 HKD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 3.51ct lab-grown round diamond

This 3.51ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG819620033 or 819620033. Listed at 10 retailers as of November 1, 2026, with prices from HK$2,919 to HK$19,144, a HK$16,226 spread on the same certified stone. Brilliant Earth lists it at HK$19,144. 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

3.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819620033
Dimensions9.82 × 9.89 × 5.83 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.82 mm9.89 mm3.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819620033
Side View
Table 61.0%Crown 32.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 59.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$19,144 HKD|Low: HK$2,887 HKD|High: HK$35,857 HKD|Avg: HK$11,267 HKD|-46.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3HK$2,919 HKD
Retailer 8HK$3,390 HKD
Retailer 6HK$5,067 HKD
Retailer 2HK$5,825 HKD
Retailer 9HK$6,826 HKD
Retailer 7HK$10,624 HKD
Retailer 5HK$10,631 HKD
Retailer 10HK$11,644 HKD
Retailer 4HK$14,180 HKD
Retailer 11HK$14,689 HKD
Brilliant EarthHK$19,144 HKD

30 data points across 11 retailers

10 retailersHK$2,919 HKD to HK$19,144 HKD

A
Cheapest Retailer
-
HK$2,919 HKD
$372 USD
A
Retailer 2
-
HK$3,390 HKD
$432 USD
View
A
Retailer 3
-
HK$5,825 HKD
€707 EUR
View
A
Retailer 4
-
HK$6,826 HKD
$870 USD
View
B+
Retailer 5
-
HK$10,624 HKD
$1,354 USD
View
B+
Retailer 6
-
HK$10,631 HKD
$1,355 USD
View
B+
Retailer 7
-
HK$11,644 HKD
$1,484 USD
View
Retailer 8
-
HK$14,180 HKD
£1,423 GBP
View
Price last confirmed 7 days ago
Retailer 9
-
HK$14,689 HKD
SGD 2,530 SGD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
20802674A · Nov 2
HK$19,144 HKD
$2,440 USD
View
9 more retailers have this diamond
Prices start from HK$2,919 HKDSave up to HK$16,226 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
3.51ct Round
HK$2,919 HKD