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Round|Lab Grown|IGI

3.57ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG678501209

Shape and cutting style on the report: Round brilliant

Certificate IGI LG678501209

Diamond specifications and retailer prices

From HK$6,763 HKD
€821 EUR
As of October 29, 2026
Save HK$19,677 HKD (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$26,440 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.57ct lab-grown round diamond

This 3.57ct 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 LG678501209 or 678501209. Listed at 15 retailers as of October 29, 2026, with prices from HK$6,763 to HK$26,440, a HK$19,677 spread on the same certified stone. Brilliant Earth lists it at HK$26,440. 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

3.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678501209
Dimensions9.79 × 9.77 × 6.06 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.79 mm9.77 mm3.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678501209
Side View
Table 58.0%Crown 35.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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$26,440 HKD|Low: HK$4,190 HKD|High: HK$29,029 HKD|Avg: HK$10,823 HKD|-8.9%
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 4HK$4,190 HKD
Retailer 3HK$5,667 HKD
Retailer 5HK$6,763 HKD
Retailer 9HK$6,904 HKD
Retailer 12HK$7,634 HKD
Retailer 10HK$7,893 HKD
Retailer 2HK$8,159 HKD
Retailer 11HK$9,030 HKD
Retailer 6HK$12,686 HKD
Retailer 8HK$15,064 HKD
Retailer 7HK$20,626 HKD
Brilliant EarthHK$26,440 HKD

36 data points across 12 retailers

15 retailersHK$6,763 HKD to HK$26,440 HKD

Retailer 1
-
HK$3,374 HKD
$430 USD
Price last confirmed 37 days ago
Retailer 2
-
HK$3,782 HKD
$482 USD
View
Price last confirmed 37 days ago
Retailer 3
-
HK$4,135 HKD
$527 USD
View
Price last confirmed 33 days ago
Retailer 4
-
HK$5,667 HKD
£569 GBP
View
Price last confirmed 22 days ago
A
Retailer 5
-
HK$6,763 HKD
€821 EUR
View
B+
Retailer 6
-
HK$6,904 HKD
$880 USD
View
B+
Retailer 7
-
HK$7,634 HKD
$973 USD
View
A
Retailer 8
-
HK$7,893 HKD
$1,006 USD
View
B+
Retailer 9
-
HK$8,159 HKD
£819 GBP
View
B+
Retailer 10
-
HK$9,030 HKD
$1,151 USD
View
B
Retailer 11
-
HK$12,686 HKD
$1,617 USD
View
Retailer 12
-
HK$13,463 HKD
$1,716 USD
View
Price last confirmed 34 days ago
B
Retailer 13
-
HK$15,064 HKD
$1,920 USD
View
B
Retailer 14
-
HK$20,626 HKD
£2,070 GBP
View
Most Expensive
B
Brilliant Earth
12973906A · Oct 29
HK$26,440 HKD
$3,370 USD
View
14 more retailers have this diamond
Prices start from HK$6,763 HKDSave up to HK$19,677 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
3.57ct Round
HK$6,763 HKD