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Oval|Lab Grown|IGI

1.76ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG512225587

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG512225587

Diamond specifications and retailer prices

From $662 USD
A$1,018 AUD
As of October 29, 2026
Save $778 USD (54%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,440 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.76ct lab-grown oval diamond

This 1.76ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512225587 or 512225587. Listed at 4 retailers as of October 29, 2026, with prices from $662 to $1,440, a $778 spread on the same certified stone. Brilliant Earth lists it at $1,440. 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

1.76
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512225587
Dimensions10.02 × 6.87 × 4.17 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.02 mm6.87 mm1.76 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512225587
Side View
Table 61.0%Crown 36.3°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $1,440 USD|Low: $192 USD|High: $2,320 USD|Avg: $827 USD
Brilliant Earth
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
Retailer 15
October 29, 2026
Retailer 10$192 USD
Retailer 15$384 USD
Retailer 5$461 USD
Retailer 12$509 USD
Retailer 14$532 USD
Retailer 11$545 USD
Retailer 8$607 USD
Retailer 2$662 USD
Retailer 9$736 USD
Retailer 7$830 USD
Retailer 3$879 USD
Retailer 13$1,071 USD
Retailer 6$1,232 USD
Brilliant Earth$1,440 USD
Retailer 4$2,320 USD

4 data points across 15 retailers

4 retailers$662 USD to $1,440 USD

A
Retailer 1
-
$461 USD
HK$3,600 HKD
Price last confirmed 55 days ago
B+
Retailer 2
-
$662 USD
A$1,018 AUD
View
B
Retailer 3
-
$1,071 USD
View
Price last confirmed 50 days ago
Most Expensive
B
Brilliant Earth
6784647Y · Oct 29
$1,440 USD
View
3 more retailers have this diamond
Prices start from $662 USDSave up to $778 USD

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
1.76ct Oval
$662 USD