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3.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG594321539

Shape and cutting style on the report: Round brilliant

Certificate IGI LG594321539

Diamond specifications and retailer prices

From HK$6,657 HKD
€808 EUR
As of October 29, 2026
Save HK$19,315 HKD (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$25,972 HKD at Brilliant Earth · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG594321539 or 594321539. Listed at 13 retailers as of October 29, 2026, with prices from HK$6,657 to HK$25,972, a HK$19,315 spread on the same certified stone. Brilliant Earth lists it at HK$25,972. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG594321539
Dimensions9.82 × 9.90 × 5.97 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
9.82 mm9.90 mm3.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG594321539
Side View
Table 58.0%Crown 33.8°Girdle: MediumPavilion 41.2°Culet: NoneDepth 60.6%

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: Oct 29
Current: HK$25,972 HKD|Low: HK$2,660 HKD|High: HK$28,561 HKD|Avg: HK$10,228 HKD|-9.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 10HK$3,727 HKD
Retailer 4HK$6,657 HKD
Retailer 7HK$6,787 HKD
Retailer 8HK$7,525 HKD
Retailer 9HK$7,878 HKD
Retailer 2HK$8,024 HKD
Retailer 6HK$8,757 HKD
Retailer 5HK$13,001 HKD
Retailer 3HK$20,299 HKD
Brilliant EarthHK$25,972 HKD

37 data points across 10 retailers

13 retailersHK$6,657 HKD to HK$25,972 HKD

Retailer 1
-
HK$3,327 HKD
$424 USD
Price last confirmed 37 days ago
Retailer 2
-
HK$3,727 HKD
$475 USD
View
Price last confirmed 36 days ago
Retailer 3
-
HK$4,072 HKD
$519 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
HK$6,657 HKD
€808 EUR
View
A
Retailer 5
-
HK$6,787 HKD
$865 USD
View
B+
Retailer 6
-
HK$7,525 HKD
$959 USD
View
A
Retailer 7
-
HK$7,878 HKD
$1,004 USD
View
B+
Retailer 8
-
HK$8,024 HKD
£805 GBP
View
B+
Retailer 9
-
HK$8,757 HKD
$1,116 USD
View
B+
Retailer 10
-
HK$13,001 HKD
$1,657 USD
View
Retailer 11
-
HK$13,253 HKD
$1,689 USD
View
Price last confirmed 33 days ago
B
Retailer 12
-
HK$20,299 HKD
£2,037 GBP
View
Most Expensive
B
Brilliant Earth
7880315A · Oct 29
HK$25,972 HKD
$3,310 USD
View
12 more retailers have this diamond
Prices start from HK$6,657 HKDSave up to HK$19,315 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$6,657 HKD