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Round|Lab Grown|IGI

1.20ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG494167338

Shape and cutting style on the report: Round brilliant

Certificate IGI LG494167338

Diamond specifications and retailer prices

From $378 NZD
$213 USD
As of October 29, 2026
Save $3,242 NZD (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,620 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG494167338 or 494167338. Listed at 17 retailers as of October 29, 2026, with prices from $378 to $3,620, a $3,242 spread on the same certified stone. Do Amore Diamonds lists it at $3,620. 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

1.20
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494167338
Dimensions6.78 × 6.81 × 4.21 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.78 mm6.81 mm1.20 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494167338
Side View
Table 57.5%Crown 36°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.1%

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 29
Current: $3,620 NZD|Low: $376 NZD|High: $3,620 NZD|Avg: $1,261 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
October 30, 2026
Retailer 14$378 NZD
Retailer 12$438 NZD
Retailer 3$468 NZD
Retailer 11$468 NZD
Retailer 2$550 NZD
Retailer 9$634 NZD
Retailer 15$880 NZD
Retailer 7$927 NZD
Retailer 13$1,031 NZD
Retailer 8$1,207 NZD
Retailer 5$1,508 NZD
Retailer 6$1,618 NZD
Retailer 4$1,659 NZD
Retailer 16$1,964 NZD
Retailer 10$2,080 NZD
Do Amore Diamonds$3,620 NZD

14 data points across 16 retailers

17 retailers$378 NZD to $3,620 NZD

A
Cheapest Retailer
-
$378 NZD
$213 USD
A
Retailer 2
-
$438 NZD
$247 USD
View
A
Retailer 3
-
$468 NZD
$264 USD
View
A
Retailer 4
-
$468 NZD
$264 USD
View
B+
Retailer 5
-
$550 NZD
$310 USD
View
A
Retailer 6
-
$634 NZD
£281 GBP
View
A
Retailer 7
-
$880 NZD
$496 USD
View
A
Retailer 8
-
$905 NZD
$510 USD
View
A
Retailer 9
-
$927 NZD
$523 USD
View
A
Retailer 10
-
$1,031 NZD
$581 USD
View
A
Retailer 11
-
$1,207 NZD
$680 USD
View
A
Retailer 12
-
$1,508 NZD
$850 USD
View
A
Retailer 13
-
$1,618 NZD
$912 USD
View
A
Retailer 14
-
$1,659 NZD
$935 USD
View
B+
Retailer 15
-
$1,964 NZD
$1,107 USD
View
A
Retailer 16
-
$2,080 NZD
£923 GBP
View
Most Expensive
B
Do Amore Diamonds
27-AE0814E47 · Oct 31
$3,620 NZD
$2,040 USD
View
16 more retailers have this diamond
Prices start from $378 NZDSave up to $3,242 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
1.20ct Round
$378 NZD