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Round|Lab Grown|IGI

1.12ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG487173757

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487173757

Diamond specifications and retailer prices

From $1,014 NZD
As of November 5, 2026
Save $1,558 NZD (61%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,477 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.12ct lab-grown round diamond

This 1.12ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG487173757 or 487173757. Listed at 12 retailers as of November 4, 2026, with a 154% 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

1.12
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487173757
Dimensions6.67 × 6.63 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.67 mm6.63 mm1.12 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487173757
Side View
Table 55.5%Crown 36.1°Girdle: MediumPavilion 40.5°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,407 NZD|Low: $1,014 NZD|High: $6,050 NZD|Avg: $2,491 NZD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$1,014 NZD
Retailer 5$1,373 NZD
Retailer 8$1,537 NZD
Retailer 6$1,592 NZD
Retailer 9$1,903 NZD
Retailer 1$2,407 NZD
Retailer 7$2,572 NZD
Retailer 4$3,787 NZD
Retailer 2$5,952 NZD

41 data points across 9 retailers

12 retailers$1,014 NZD to $2,572 NZD

B+
Cheapest Retailer
-
$1,014 NZD
B
Retailer 2
-
$1,373 NZD
View
B
Retailer 3
-
$1,494 NZD
View
B
Retailer 4
-
$1,537 NZD
View
Final sale: no returns
Retailer 5
-
$1,592 NZD
View
Price last confirmed 25 days ago
B
Retailer 6
-
$1,592 NZD
View
B
Retailer 7
-
$1,903 NZD
View
B
Retailer 8
-
$2,407 NZD
View
B
Retailer 9
-
$2,572 NZD
View
Retailer 10
-
$3,787 NZD
View
Price under review
Most Expensive
NZ Jewellers
efe87a5a-c940-4b09-8840-23d38f45134d · Nov 5
$4,477 NZD
$2,517 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,014 NZDSave up to $1,558 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.

B+
1.12ct Round
$1,014 NZD