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1.63ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG425066630

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425066630

Diamond specifications and retailer prices

From $1,845 NZD
$1,040 USD
As of October 30, 2026
Save $8,349 NZD (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,194 NZD at MOH London · As of October 29, 2026
View at MOH London

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 LG425066630 or 425066630. Listed at 12 retailers as of October 29, 2026, with prices from $1,845 to $10,194, a $8,349 spread on the same certified stone. MOH London lists it at $10,194. 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 angle34.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425066630
Dimensions7.50 × 7.47 × 4.72 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.50 mm7.47 mm1.63 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG425066630
Side View
Table 54.5%Crown 34.9°Girdle: ThickPavilion 40.9°Culet: NoneDepth 63.1%

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 30
Current: $10,194 NZD|Low: $1,845 NZD|High: $10,275 NZD|Avg: $5,713 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2$1,845 NZD
Retailer 6$3,061 NZD
Retailer 9$3,428 NZD
Retailer 7$3,550 NZD
Retailer 4$3,832 NZD
Retailer 10$3,850 NZD
Retailer 12$4,737 NZD
Retailer 8$5,575 NZD
Retailer 5$6,121 NZD
Retailer 11$9,723 NZD
Retailer 3$10,163 NZD
MOH London$10,194 NZD

17 data points across 12 retailers

12 retailers$1,845 NZD to $10,194 NZD

A
Cheapest Retailer
-
$1,845 NZD
$1,040 USD
B+
Retailer 2
-
$3,061 NZD
$1,725 USD
View
B+
Retailer 3
-
$3,330 NZD
$1,877 USD
View
B+
Retailer 4
-
$3,428 NZD
$1,932 USD
View
Final sale: no returns
B
Retailer 5
-
$3,550 NZD
$2,001 USD
View
Retailer 6
-
$3,550 NZD
$2,001 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$3,850 NZD
$2,170 USD
View
B
Retailer 8
-
$5,575 NZD
$3,142 USD
View
B
Retailer 9
-
$6,121 NZD
$3,450 USD
View
B
Retailer 10
-
$6,655 NZD
$3,751 USD
View
B
Retailer 11
-
$9,723 NZD
$5,480 USD
View
Most Expensive
B
MOH London
LG425066630 · Oct 29
$10,194 NZD
£4,524 GBP
View
11 more retailers have this diamond
Prices start from $1,845 NZDSave up to $8,349 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
$1,845 NZD