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Round|Lab Grown|IGI

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 $1,481 AUD
$1,040 USD
As of October 31, 2026
Save $6,655 AUD (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,136 AUD at MOH London · As of November 1, 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 31, 2026, with prices from $1,481 to $8,136, a $6,655 spread on the same certified stone. MOH London lists it at $8,136. 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 31
Current: $8,136 AUD|Low: $1,481 AUD|High: $8,244 AUD|Avg: $4,574 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 2$1,481 AUD
Retailer 6$2,456 AUD
Retailer 9$2,750 AUD
Retailer 7$2,849 AUD
Retailer 4$3,075 AUD
Retailer 10$3,089 AUD
Retailer 12$3,801 AUD
Retailer 8$4,473 AUD
Retailer 5$4,911 AUD
Retailer 11$7,802 AUD
MOH London$8,136 AUD
Retailer 3$8,154 AUD

18 data points across 12 retailers

12 retailers$1,481 AUD to $8,136 AUD

A
Cheapest Retailer
-
$1,481 AUD
$1,040 USD
B+
Retailer 2
-
$2,456 AUD
$1,725 USD
View
B+
Retailer 3
-
$2,672 AUD
$1,877 USD
View
B+
Retailer 4
-
$2,750 AUD
$1,932 USD
View
Final sale: no returns
B
Retailer 5
-
$2,849 AUD
$2,001 USD
View
Retailer 6
-
$2,849 AUD
$2,001 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
$3,089 AUD
$2,170 USD
View
B
Retailer 8
-
$4,473 AUD
$3,142 USD
View
B
Retailer 9
-
$4,911 AUD
$3,450 USD
View
B
Retailer 10
-
$5,340 AUD
$3,751 USD
View
B
Retailer 11
-
$7,802 AUD
$5,480 USD
View
Most Expensive
B
MOH London
LG425066630 · Nov 1
$8,136 AUD
£4,500 GBP
View
11 more retailers have this diamond
Prices start from $1,481 AUDSave up to $6,655 AUD

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
$1,481 AUD