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1.63ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG450019953

Shape and cutting style on the report: Round brilliant

Certificate IGI LG450019953

Diamond specifications and retailer prices

From $623 NZD
$351 USD
As of November 1, 2026
Save $4,913 NZD (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,536 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.63ct lab-grown round diamond

This 1.63ct 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 LG450019953 or 450019953. Listed at 18 retailers as of October 31, 2026, with prices from $623 to $5,536, a $4,913 spread on the same certified stone. Do Amore Diamonds lists it at $5,536. 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

1.63
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG450019953
Dimensions7.51 × 7.59 × 4.70 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.51 mm7.59 mm1.63 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG450019953
Side View
Table 57.5%Crown 34.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.3%

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: Nov 1
Current: $5,536 NZD|Low: $623 NZD|High: $5,536 NZD|Avg: $1,744 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 18$623 NZD
Retailer 15$722 NZD
Retailer 12$763 NZD
Retailer 5$772 NZD
Retailer 14$772 NZD
Retailer 3$949 NZD
Retailer 6$1,038 NZD
Retailer 7$1,313 NZD
Retailer 9$1,336 NZD
Retailer 16$1,366 NZD
Retailer 11$1,377 NZD
Retailer 10$1,500 NZD
Retailer 2$1,650 NZD
Retailer 17$2,266 NZD
Retailer 8$2,337 NZD
Retailer 4$2,741 NZD
Retailer 13$3,351 NZD
Do Amore Diamonds$5,536 NZD

14 data points across 18 retailers

18 retailers$623 NZD to $5,536 NZD

A
Cheapest Retailer
-
$623 NZD
$351 USD
A
Retailer 2
-
$722 NZD
$407 USD
View
B+
Retailer 3
-
$763 NZD
$430 USD
View
Retailer 4
-
$772 NZD
$435 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$772 NZD
$435 USD
View
A
Retailer 6
-
$949 NZD
$535 USD
View
A
Retailer 7
-
$1,038 NZD
$585 USD
View
Retailer 8
-
$1,313 NZD
$740 USD
View
Price last confirmed 11 days ago
A
Retailer 9
-
$1,336 NZD
$753 USD
View
A
Retailer 10
-
$1,366 NZD
$770 USD
View
A
Retailer 11
-
$1,377 NZD
£611 GBP
View
A
Retailer 12
-
$1,500 NZD
$846 USD
View
A
Retailer 13
-
$1,650 NZD
$930 USD
View
A
Retailer 14
-
$2,266 NZD
$1,277 USD
View
A
Retailer 15
-
$2,337 NZD
$1,317 USD
View
B+
Retailer 16
-
$2,741 NZD
$1,545 USD
View
B+
Retailer 17
-
$3,351 NZD
£1,487 GBP
View
Most Expensive
B
Do Amore Diamonds
27-78B8021BB · Oct 31
$5,536 NZD
$3,120 USD
View
17 more retailers have this diamond
Prices start from $623 NZDSave up to $4,913 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
1.63ct Round
$623 NZD