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Oval|Lab Grown|IGI

1.70ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG451057941

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057941

Diamond specifications and retailer prices

From $1,338 AUD
$940 USD
As of October 31, 2026
Save $5,608 AUD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,946 AUD at MOH London · As of October 29, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057941 or 451057941. Listed at 12 retailers as of October 29, 2026, with prices from $1,338 to $6,946, a $5,608 spread on the same certified stone. MOH London lists it at $6,946. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057941
Dimensions9.55 × 6.73 × 4.20 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.55 mm6.73 mm1.70 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057941
Side View
Table 57.5%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.4%

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 31
Current: $6,946 AUD|Low: $1,338 AUD|High: $7,000 AUD|Avg: $3,484 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 8$1,338 AUD
Retailer 7$2,086 AUD
Retailer 12$2,269 AUD
Retailer 13$2,333 AUD
Retailer 9$2,419 AUD
Retailer 14$2,419 AUD
Retailer 4$2,662 AUD
Retailer 5$3,293 AUD
Retailer 2$3,464 AUD
Retailer 10$3,814 AUD
Retailer 3$4,390 AUD
Retailer 11$4,534 AUD
Retailer 6$6,926 AUD
MOH London$6,946 AUD

39 data points across 14 retailers

12 retailers$1,338 AUD to $6,946 AUD

A
Cheapest Retailer
-
$1,338 AUD
$940 USD
B+
Retailer 2
-
$2,086 AUD
$1,465 USD
View
B+
Retailer 3
-
$2,269 AUD
$1,594 USD
View
B+
Retailer 4
-
$2,333 AUD
$1,639 USD
View
Final sale: no returns
Retailer 5
-
$2,419 AUD
$1,699 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$2,419 AUD
$1,699 USD
View
B+
Retailer 7
-
$2,662 AUD
$1,870 USD
View
B+
Retailer 8
-
$3,464 AUD
£1,916 GBP
View
B
Retailer 9
-
$3,814 AUD
$2,679 USD
View
B
Retailer 10
-
$4,390 AUD
$3,084 USD
View
B
Retailer 11
-
$4,534 AUD
$3,185 USD
View
Most Expensive
B
MOH London
LG451057941 · Oct 29
$6,946 AUD
£3,842 GBP
View
11 more retailers have this diamond
Prices start from $1,338 AUDSave up to $5,608 AUD

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
$1,338 AUD