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3.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG670420051

Shape and cutting style on the report: Round brilliant

Certificate IGI LG670420051

Diamond specifications and retailer prices

From HK$2,966 HKD
$378 USD
As of October 29, 2026
Save HK$12,256 HKD (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$15,222 HKD at Rare Carat · As of October 28, 2026
View at Rare Carat

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 LG670420051 or 670420051. Listed at 9 retailers as of October 28, 2026, with prices from HK$2,966 to HK$15,222, a HK$12,256 spread on the same certified stone. Rare Carat lists it at HK$15,222. 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 angle33.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670420051
Dimensions9.88 × 9.85 × 5.89 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
9.88 mm9.85 mm3.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670420051
Side View
Table 58.0%Crown 33.5°Girdle: MediumPavilion 40.5°Culet: NoneDepth 59.7%

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$15,222 HKD|Low: HK$2,966 HKD|High: HK$38,683 HKD|Avg: HK$12,312 HKD|-0.9%
Rare Carat
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
October 29, 2026
Retailer 11HK$2,966 HKD
Retailer 9HK$3,319 HKD
Retailer 2HK$5,899 HKD
Retailer 14HK$6,294 HKD
Retailer 6HK$8,670 HKD
Retailer 4HK$9,086 HKD
Retailer 3HK$9,675 HKD
Retailer 10HK$10,310 HKD
Retailer 8HK$10,318 HKD
Retailer 12HK$11,817 HKD
Retailer 7HK$14,379 HKD
Retailer 13HK$14,690 HKD
Rare CaratHK$15,222 HKD
Retailer 5HK$38,683 HKD

27 data points across 14 retailers

9 retailersHK$2,966 HKD to HK$15,222 HKD

A
Cheapest Retailer
-
HK$2,966 HKD
$378 USD
A
Retailer 2
-
HK$3,319 HKD
$423 USD
View
A
Retailer 3
-
HK$5,899 HKD
€716 EUR
View
B+
Retailer 4
-
HK$10,310 HKD
$1,314 USD
View
B+
Retailer 5
-
HK$10,318 HKD
$1,315 USD
View
B+
Retailer 6
-
HK$11,817 HKD
$1,506 USD
View
B+
Retailer 7
-
HK$14,379 HKD
£1,443 GBP
View
Retailer 8
-
HK$14,690 HKD
SGD 2,530 SGD
View
Price last confirmed 17 days ago
Most Expensive
B
Rare Carat
LGRD30-86336 · Oct 28
HK$15,222 HKD
$1,940 USD
View
8 more retailers have this diamond
Prices start from HK$2,966 HKDSave up to HK$12,256 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$2,966 HKD