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1.71ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG440012001

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440012001

Diamond specifications and retailer prices

From $1,686 NZD
$950 USD
As of October 30, 2026
Save $6,530 NZD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,216 NZD at MOH London · As of October 27, 2026
View at MOH London

About this 1.71ct lab-grown round diamond

This 1.71ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440012001 or 440012001. Listed at 10 retailers as of October 27, 2026, with prices from $1,686 to $8,216, a $6,530 spread on the same certified stone. MOH London lists it at $8,216. 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

1.71
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012001
Dimensions7.81 × 7.78 × 4.61 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.81 mm7.78 mm1.71 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440012001
Side View
Table 59.0%Crown 32.3°Girdle: ThickPavilion 40.3°Culet: NoneDepth 59.1%

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 30
Current: $8,216 NZD|Low: $1,686 NZD|High: $8,313 NZD|Avg: $4,086 NZD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2$1,686 NZD
Retailer 5$2,477 NZD
Retailer 8$2,693 NZD
Retailer 10$2,771 NZD
Retailer 6$2,873 NZD
Retailer 3$3,215 NZD
Retailer 12$3,935 NZD
Retailer 7$4,537 NZD
Retailer 11$5,213 NZD
Retailer 9$5,385 NZD
Retailer 4$6,431 NZD
MOH London$8,216 NZD

16 data points across 12 retailers

10 retailers$1,686 NZD to $8,216 NZD

A
Cheapest Retailer
-
$1,686 NZD
$950 USD
B+
Retailer 2
-
$2,477 NZD
$1,396 USD
View
B+
Retailer 3
-
$2,693 NZD
$1,518 USD
View
B+
Retailer 4
-
$2,771 NZD
$1,562 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,873 NZD
$1,619 USD
View
Retailer 6
-
$2,873 NZD
$1,619 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
$4,537 NZD
$2,557 USD
View
B
Retailer 8
-
$5,213 NZD
$2,938 USD
View
B
Retailer 9
-
$5,385 NZD
$3,035 USD
View
Most Expensive
B
MOH London
LG440012001 · Oct 27
$8,216 NZD
£3,646 GBP
View
9 more retailers have this diamond
Prices start from $1,686 NZDSave up to $6,530 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
1.71ct Round
$1,686 NZD