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0.64ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG301781227

Shape and cutting style on the report: Round brilliant

Certificate IGI LG301781227

Diamond specifications and retailer prices

From HK$2,068 HKD
€251 EUR
As of October 31, 2026
Save HK$1,149 HKD (36%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$3,217 HKD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 0.64ct lab-grown round diamond

This 0.64ct lab-grown round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG301781227 or 301781227. Listed at 2 retailers as of October 31, 2026, with prices from HK$2,068 to HK$3,217, a HK$1,149 spread on the same certified stone. Brilliant Earth lists it at HK$3,217. 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

0.64
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG301781227
Dimensions5.49 × 5.54 × 3.40 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANTThis Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
5.49 mm5.54 mm0.64 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG301781227
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
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 31
Current: HK$3,217 HKD|Low: HK$1,585 HKD|High: HK$3,295 HKD|Avg: HK$2,310 HKD|-2.4%
Brilliant Earth
Retailer 2
Retailer 3
November 1, 2026
Retailer 3HK$1,585 HKD
Retailer 2HK$2,068 HKD
Brilliant EarthHK$3,217 HKD

12 data points across 3 retailers

2 retailersHK$2,068 HKD to HK$3,217 HKD

A
Cheapest Retailer
-
HK$2,068 HKD
€251 EUR
Most Expensive
B+
Brilliant Earth
16335440A · Nov 1
HK$3,217 HKD
$410 USD
View
1 more retailer has this diamond
Prices start from HK$2,068 HKDSave up to HK$1,149 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
0.64ct Round
HK$2,068 HKD