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1.64ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG418030147

Shape and cutting style on the report: Round brilliant

Certificate IGI LG418030147

Diamond specifications and retailer prices

From $626 NZD
$353 USD
As of November 1, 2026
Save $4,945 NZD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,571 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.64ct lab-grown round diamond

This 1.64ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG418030147 or 418030147. Listed at 17 retailers as of October 31, 2026, with prices from $626 to $5,571, a $4,945 spread on the same certified stone. Do Amore Diamonds lists it at $5,571. 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

1.64
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG418030147
Dimensions7.57 × 7.59 × 4.68 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.57 mm7.59 mm1.64 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG418030147
Side View
Table 58.0%Crown 35.5°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

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: Nov 1
Current: $5,571 NZD|Low: $626 NZD|High: $5,571 NZD|Avg: $1,766 NZD|+0.3%
Do Amore Diamonds
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
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 16$626 NZD
Retailer 13$727 NZD
Retailer 11$766 NZD
Retailer 4$777 NZD
Retailer 12$777 NZD
Retailer 17$960 NZD
Retailer 5$1,047 NZD
Retailer 6$1,313 NZD
Retailer 8$1,344 NZD
Retailer 14$1,372 NZD
Retailer 10$1,384 NZD
Retailer 9$1,506 NZD
Retailer 15$2,278 NZD
Retailer 7$2,351 NZD
Retailer 3$2,757 NZD
Retailer 2$3,351 NZD
Do Amore Diamonds$5,571 NZD

12 data points across 17 retailers

17 retailers$626 NZD to $5,571 NZD

A
Cheapest Retailer
-
$626 NZD
$353 USD
A
Retailer 2
-
$727 NZD
$410 USD
View
B+
Retailer 3
-
$766 NZD
$432 USD
View
Retailer 4
-
$777 NZD
$438 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$777 NZD
$438 USD
View
A
Retailer 6
-
$960 NZD
$541 USD
View
A
Retailer 7
-
$1,047 NZD
$590 USD
View
Retailer 8
-
$1,313 NZD
$740 USD
View
Price last confirmed 11 days ago
A
Retailer 9
-
$1,344 NZD
$758 USD
View
A
Retailer 10
-
$1,372 NZD
$773 USD
View
A
Retailer 11
-
$1,384 NZD
£614 GBP
View
A
Retailer 12
-
$1,506 NZD
$849 USD
View
A
Retailer 13
-
$2,278 NZD
$1,284 USD
View
A
Retailer 14
-
$2,351 NZD
$1,325 USD
View
B+
Retailer 15
-
$2,757 NZD
$1,554 USD
View
B+
Retailer 16
-
$3,351 NZD
£1,487 GBP
View
Most Expensive
B
Do Amore Diamonds
27-8651A2F91 · Oct 31
$5,571 NZD
$3,140 USD
View
16 more retailers have this diamond
Prices start from $626 NZDSave up to $4,945 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
1.64ct Round
$626 NZD