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Round|Lab Grown|IGI

1.63ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG12400612

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12400612

Diamond specifications and retailer prices

From $732 NZD
$412 USD
As of October 27, 2026
Save $2,649 NZD (78%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,598 NZD at Do Amore Diamonds · As of October 29, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12400612 or 12400612. Listed at 20 retailers as of October 26, 2026, with a 362% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12400612
Dimensions7.49 × 7.53 × 4.70 mm
L/W Ratio1.01
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.
Top View
7.49 mm7.53 mm1.63 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12400612
Side View
Table 57.5%Crown 35.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.6%

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 27
Current: $5,598 NZD|Low: $631 NZD|High: $5,598 NZD|Avg: $1,801 NZD
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
Retailer 18
Retailer 19
October 28, 2026
Retailer 16$631 NZD
Retailer 14$732 NZD
Retailer 17$777 NZD
Retailer 12$784 NZD
Retailer 19$784 NZD
Retailer 10$880 NZD
Retailer 4$1,049 NZD
Retailer 5$1,271 NZD
Retailer 15$1,377 NZD
Retailer 8$1,389 NZD
Retailer 2$1,405 NZD
Retailer 11$1,533 NZD
Retailer 6$1,547 NZD
Retailer 3$2,296 NZD
Retailer 7$2,433 NZD
Retailer 18$2,778 NZD
Retailer 9$3,051 NZD
Retailer 13$3,381 NZD
Do Amore Diamonds$5,598 NZD

12 data points across 19 retailers

20 retailers$732 NZD to $3,381 NZD

Retailer 1
-
$631 NZD
$355 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$732 NZD
$412 USD
View
A
Retailer 3
-
$777 NZD
$437 USD
View
Retailer 4
-
$784 NZD
$441 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$784 NZD
$441 USD
View
A
Retailer 6
-
$880 NZD
$495 USD
View
Retailer 7
-
$1,049 NZD
$590 USD
View
Price last confirmed 6 days ago
Retailer 8
-
$1,271 NZD
$715 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$1,377 NZD
$775 USD
View
B+
Retailer 10
-
$1,389 NZD
$782 USD
View
B+
Retailer 11
-
$1,405 NZD
£622 GBP
View
B+
Retailer 12
-
$1,533 NZD
$863 USD
View
Retailer 13
-
$1,547 NZD
£686 GBP
View
Price last confirmed 16 days ago
B
Retailer 14
-
$2,296 NZD
$1,292 USD
View
B
Retailer 15
-
$2,433 NZD
$1,369 USD
View
B
Retailer 16
-
$2,613 NZD
$1,470 USD
View
B
Retailer 17
-
$2,778 NZD
$1,563 USD
View
B
Retailer 18
-
$3,051 NZD
$1,717 USD
View
B
Retailer 19
-
$3,381 NZD
£1,498 GBP
View
Most Expensive
Do Amore Diamonds
27-C9BBFF820 · Oct 29
$5,598 NZD
$3,150 USD
View
Price under review
19 more retailers have this diamond
Prices start from $732 NZDSave up to $2,649 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
$732 NZD