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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 $468 NZD
€251 EUR
As of October 31, 2026
Save $260 NZD (36%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $727 NZD 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 $468 to $727, a $260 spread on the same certified stone. Brilliant Earth lists it at $727. 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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $727 NZD|Low: $358 NZD|High: $745 NZD|Avg: $522 NZD|-2.4%
Brilliant Earth
Retailer 2
Retailer 3
November 1, 2026
Retailer 3$358 NZD
Retailer 2$468 NZD
Brilliant Earth$727 NZD

12 data points across 3 retailers

2 retailers$468 NZD to $727 NZD

A
Cheapest Retailer
-
$468 NZD
€251 EUR
Most Expensive
B+
Brilliant Earth
16335440A · Nov 1
$727 NZD
$410 USD
View
1 more retailer has this diamond
Prices start from $468 NZDSave up to $260 NZD

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
$468 NZD