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1.70ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG499105228

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499105228

Diamond specifications and retailer prices

From $1,668 NZD
$940 USD
As of October 30, 2026
Save $6,205 NZD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,873 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499105228 or 499105228. Listed at 10 retailers as of October 29, 2026, with prices from $1,668 to $7,873, a $6,205 spread on the same certified stone. MOH London lists it at $7,873. 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

1.70
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499105228
Dimensions7.55 × 7.61 × 4.75 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
7.55 mm7.61 mm1.70 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499105228
Side View
Table 54.5%Crown 35.3°Girdle: MediumPavilion 40.3°Culet: NoneDepth 62.6%

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: $7,873 NZD|Low: $1,668 NZD|High: $7,936 NZD|Avg: $3,707 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$1,668 NZD
Retailer 4$2,101 NZD
Retailer 7$2,285 NZD
Retailer 9$2,353 NZD
Retailer 5$2,438 NZD
Retailer 11$3,469 NZD
Retailer 6$3,866 NZD
Retailer 8$4,569 NZD
Retailer 10$4,803 NZD
Retailer 3$5,450 NZD
MOH London$7,873 NZD

17 data points across 11 retailers

10 retailers$1,668 NZD to $7,873 NZD

A
Cheapest Retailer
-
$1,668 NZD
$940 USD
B+
Retailer 2
-
$2,101 NZD
$1,184 USD
View
B+
Retailer 3
-
$2,285 NZD
$1,288 USD
View
B+
Retailer 4
-
$2,353 NZD
$1,326 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,438 NZD
$1,374 USD
View
Retailer 6
-
$2,438 NZD
$1,374 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$3,866 NZD
$2,179 USD
View
B
Retailer 8
-
$4,569 NZD
$2,575 USD
View
B
Retailer 9
-
$4,803 NZD
$2,707 USD
View
Most Expensive
B
MOH London
LG499105228 · Oct 29
$7,873 NZD
£3,494 GBP
View
9 more retailers have this diamond
Prices start from $1,668 NZDSave up to $6,205 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
1.70ct Round
$1,668 NZD