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Oval|Lab Grown|IGI

1.54ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG520285353

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG520285353

Diamond specifications and retailer prices

From $274 USD
As of October 30, 2026
Save $916 USD (77%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,190 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.54ct lab-grown oval diamond

This 1.54ct 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 LG520285353 or 520285353. Listed at 22 retailers as of October 29, 2026, with prices from $274 to $1,190, a $916 spread on the same certified stone. Brilliant Earth lists it at $1,190. 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

1.54
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520285353
Dimensions9.17 × 6.56 × 4.18 mm
L/W Ratio1.40
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
9.17 mm6.56 mm1.54 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520285353
Side View
Table 59.5%Crown 36°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 63.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,190 USD|Low: $189 USD|High: $1,230 USD|Avg: $681 USD|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8$274 USD
Retailer 6$415 USD
Retailer 4$492 USD
Retailer 10$522 USD
Retailer 9$546 USD
Retailer 2$556 USD
Retailer 7$935 USD
Retailer 5$948 USD
Retailer 3$1,184 USD
Brilliant Earth$1,190 USD

41 data points across 10 retailers

22 retailers$274 USD to $1,190 USD

Retailer 1
-
$237 USD
Price last confirmed 31 days ago
A
Retailer 2
-
$274 USD
View
Final sale: no returns
Retailer 3
-
$275 USD
View
Price last confirmed 17 days ago
Retailer 4
-
$275 USD
View
Price last confirmed 35 days ago
Retailer 5
-
$290 USD
View
Price last confirmed 31 days ago
A
Retailer 6
-
$294 USD
View
Retailer 7
-
$294 USD
View
Price last confirmed 20 days ago
Retailer 8
-
$294 USD
View
Price last confirmed 28 days ago
A
Retailer 9
-
$346 USD
HK$2,700 HKD
View
B+
Retailer 10
-
$415 USD
View
A
Retailer 11
-
$492 USD
€469 EUR
View
B+
Retailer 12
-
$522 USD
View
B+
Retailer 13
-
$546 USD
View
B+
Retailer 14
-
$556 USD
£438 GBP
View
Retailer 15
-
$935 USD
View
Price last confirmed 11 days ago
Retailer 16
-
$945 USD
View
Price last confirmed 20 days ago
Retailer 17
-
$945 USD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$948 USD
View
B
Retailer 19
-
$995 USD
SGD 1,344 SGD
View
B
Retailer 20
-
$997 USD
View
B
Retailer 21
-
$1,184 USD
£932 GBP
View
Most Expensive
B
Brilliant Earth
5627585A · Oct 29
$1,190 USD
View
21 more retailers have this diamond
Prices start from $274 USDSave up to $916 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
1.54ct Oval
$274 USD