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Marquise|Lab Grown|IGI

1.00ct G SI1 Marquise Lab Grown Diamond

VG • G/SI1 • IGI LG512221601

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG512221601

Diamond specifications and retailer prices

From $1,605 NZD
$890 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: $1,605 NZD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG512221601 or 512221601. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512221601
Dimensions10.79 × 5.15 × 2.98 mm
L/W Ratio2.10
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
10.79 mm5.15 mm1.00 ctG / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG512221601
Side View
Table 58.5%Crown 38.5°Girdle: MED-STKPavilion 34.7°Culet: NoneDepth 57.9%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 6
Current: $1,605 NZD|Low: $866 NZD|High: $4,465 NZD|Avg: $2,404 NZD|-4.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 7, 2026
Retailer 5$866 NZD
Retailer 9$1,228 NZD
Retailer 4$1,551 NZD
Brilliant Earth$1,605 NZD
Retailer 3$2,019 NZD
Retailer 2$2,055 NZD
Retailer 8$2,116 NZD
Retailer 7$3,215 NZD
Retailer 10$3,604 NZD
Retailer 6$4,111 NZD

79 data points across 10 retailers

1 retailer

C
Brilliant Earth
19749159A · Nov 6
$1,605 NZD
$890 USD
View

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C
1.00ct Marquise
$1,605 NZD