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Emerald|Lab Grown|IGI

1.00ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG523291787

Shape and cutting style on the report: Emerald cut

Certificate IGI LG523291787

Diamond specifications and retailer prices

From $250 NZD
$141 USD
As of October 29, 2026
Save $1,210 NZD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,668 NZD at Brilliant Earth · As of October 15, 2026
View at Brilliant Earth

About this 1ct lab-grown emerald diamond

This 1ct lab-grown emerald sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG523291787 or 523291787. Listed at 17 retailers as of October 29, 2026, with a 484% 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.3°
Pavilion angle44.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523291787
Dimensions6.56 × 4.86 × 3.22 mm
L/W Ratio1.35
Culet sizeLong
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.56 mm4.86 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523291787
Side View
Table 69.0%Crown 29.3°Girdle: MediumPavilion 44.2°Culet: LNGDepth 66.3%

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: $1,668 NZD|Low: $241 NZD|High: $1,721 NZD|Avg: $686 NZD|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 10$250 NZD
Retailer 4$280 NZD
Retailer 11$311 NZD
Retailer 12$311 NZD
Retailer 3$422 NZD
Retailer 2$528 NZD
Retailer 5$586 NZD
Retailer 9$590 NZD
Retailer 7$594 NZD
Retailer 6$740 NZD
Retailer 13$745 NZD
Retailer 8$1,460 NZD
Brilliant Earth$1,668 NZD

44 data points across 13 retailers

17 retailers$250 NZD to $1,460 NZD

A
Cheapest Retailer
-
$250 NZD
$141 USD
A
Retailer 2
-
$280 NZD
$158 USD
View
Final sale: no returns
A
Retailer 3
-
$291 NZD
$164 USD
View
A
Retailer 4
-
$311 NZD
$175 USD
View
A
Retailer 5
-
$311 NZD
$175 USD
View
B+
Retailer 6
-
$422 NZD
$238 USD
View
A
Retailer 7
-
$528 NZD
£234 GBP
View
B+
Retailer 8
-
$586 NZD
$330 USD
View
A
Retailer 9
-
$590 NZD
£262 GBP
View
B+
Retailer 10
-
$594 NZD
€319 EUR
View
B+
Retailer 11
-
$740 NZD
$417 USD
View
B+
Retailer 12
-
$745 NZD
$420 USD
View
B+
Retailer 13
-
$915 NZD
£406 GBP
View
B+
Retailer 14
-
$999 NZD
$563 USD
View
B
Retailer 15
-
$1,098 NZD
$619 USD
View
B
Retailer 16
-
$1,460 NZD
£648 GBP
View
Most Expensive
Brilliant Earth
16211415A · Oct 15
$1,668 NZD
$940 USD
View
Price last confirmed 16 days ago
16 more retailers have this diamond
Prices start from $250 NZDSave up to $1,210 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
1.00ct Emerald
$250 NZD