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Oval|Lab Grown|IGI

1.66ct H VS1 Oval Lab Grown Diamond

EX • H/VS1 • IGI LG625445365

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG625445365

Diamond specifications and retailer prices

From $1,755 AUD
$1,230 USD
As of November 2, 2026
2 retailers carry this diamond
Most expensive: $1,755 AUD at Brilliant Earth
View at Brilliant Earth

About this 1.66ct lab-grown oval diamond

This 1.66ct lab-grown oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG625445365 or 625445365. Listed at 2 retailers as of November 2, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625445365
Dimensions9.64 × 6.78 × 4.16 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Top View
9.64 mm6.78 mm1.66 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625445365
Side View
Table 60.0%Crown 35.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: $1,755 AUD|Low: $233 AUD|High: $1,914 AUD|Avg: $1,125 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 2, 2026
Retailer 5$537 AUD
Retailer 3$615 AUD
Retailer 10$699 AUD
Retailer 4$820 AUD
Retailer 7$945 AUD
Retailer 8$1,096 AUD
Retailer 6$1,233 AUD
Retailer 2$1,363 AUD
Retailer 9$1,587 AUD
Brilliant Earth$1,755 AUD

51 data points across 10 retailers

2 retailers

Retailer 1
-
$1,363 AUD
$955 USD
Price last confirmed 77 days ago
Most Expensive
B
Brilliant Earth
9862691A · Nov 2
$1,755 AUD
$1,230 USD
View
1 more retailer has this diamond

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.

B
1.66ct Oval
$1,755 AUD