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Oval|Lab Grown|IGI

1.70ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG451058251

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451058251

Diamond specifications and retailer prices

From $1,508 NZD
$850 USD
As of October 29, 2026
Save $6,153 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,661 NZD at MOH London · As of October 27, 2026
View at MOH London

About this 1.7ct lab-grown oval diamond

This 1.7ct lab-grown oval 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 LG451058251 or 451058251. Listed at 10 retailers as of October 27, 2026, with prices from $1,508 to $7,661, a $6,153 spread on the same certified stone. MOH London lists it at $7,661. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451058251
Dimensions9.57 × 6.74 × 4.20 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.57 mm6.74 mm1.70 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451058251
Side View
Table 55.5%Crown 35.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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: $7,661 NZD|Low: $1,508 NZD|High: $7,743 NZD|Avg: $3,538 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
October 27, 2026
Retailer 4$1,508 NZD
Retailer 2$2,053 NZD
Retailer 8$2,234 NZD
Retailer 9$2,298 NZD
Retailer 5$2,381 NZD
Retailer 11$3,401 NZD
Retailer 6$3,785 NZD
Retailer 7$4,464 NZD
Retailer 10$4,691 NZD
Retailer 3$5,329 NZD
MOH London$7,661 NZD

13 data points across 11 retailers

10 retailers$1,508 NZD to $7,661 NZD

A
Cheapest Retailer
-
$1,508 NZD
$850 USD
B+
Retailer 2
-
$2,053 NZD
$1,157 USD
View
A
Retailer 3
-
$2,234 NZD
$1,259 USD
View
A
Retailer 4
-
$2,298 NZD
$1,295 USD
View
Final sale: no returns
Retailer 5
-
$2,381 NZD
$1,342 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$2,381 NZD
$1,342 USD
View
B
Retailer 7
-
$3,785 NZD
$2,133 USD
View
B
Retailer 8
-
$4,464 NZD
$2,516 USD
View
B
Retailer 9
-
$4,691 NZD
$2,644 USD
View
Most Expensive
B
MOH London
LG451058251 · Oct 27
$7,661 NZD
£3,400 GBP
View
9 more retailers have this diamond
Prices start from $1,508 NZDSave up to $6,153 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 Oval
$1,508 NZD