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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 $486 NZD
$274 USD
As of November 1, 2026
Save $1,625 NZD (77%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,111 NZD at Brilliant Earth · As of October 31, 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 31, 2026, with prices from $486 to $2,111, a $1,625 spread on the same certified stone. Brilliant Earth lists it at $2,111. 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
Colour
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

How it works →
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: Nov 1
Current: $2,111 NZD|Low: $335 NZD|High: $2,182 NZD|Avg: $1,216 NZD|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 8$486 NZD
Retailer 6$736 NZD
Retailer 4$874 NZD
Retailer 10$926 NZD
Retailer 9$969 NZD
Retailer 3$986 NZD
Retailer 7$1,659 NZD
Retailer 5$1,682 NZD
Retailer 2$2,091 NZD
Brilliant Earth$2,111 NZD

41 data points across 10 retailers

22 retailers$486 NZD to $2,111 NZD

Retailer 1
-
$421 NZD
$237 USD
Price last confirmed 34 days ago
A
Retailer 2
-
$486 NZD
$274 USD
View
Final sale: no returns
Retailer 3
-
$488 NZD
$275 USD
View
Price last confirmed 19 days ago
Retailer 4
-
$488 NZD
$275 USD
View
Price last confirmed 38 days ago
Retailer 5
-
$515 NZD
$290 USD
View
Price last confirmed 33 days ago
A
Retailer 6
-
$522 NZD
$294 USD
View
Retailer 7
-
$522 NZD
$294 USD
View
Price last confirmed 22 days ago
Retailer 8
-
$522 NZD
$294 USD
View
Price last confirmed 30 days ago
A
Retailer 9
-
$613 NZD
HK$2,700 HKD
View
B+
Retailer 10
-
$736 NZD
$415 USD
View
A
Retailer 11
-
$874 NZD
€469 EUR
View
B+
Retailer 12
-
$926 NZD
$522 USD
View
B+
Retailer 13
-
$969 NZD
$546 USD
View
B+
Retailer 14
-
$986 NZD
£438 GBP
View
B
Retailer 15
-
$1,659 NZD
$935 USD
View
Retailer 16
-
$1,677 NZD
$945 USD
View
Price last confirmed 23 days ago
Retailer 17
-
$1,677 NZD
$945 USD
View
Price last confirmed 32 days ago
B
Retailer 18
-
$1,682 NZD
$948 USD
View
B
Retailer 19
-
$1,765 NZD
SGD 1,344 SGD
View
B
Retailer 20
-
$1,769 NZD
$997 USD
View
B
Retailer 21
-
$2,091 NZD
£928 GBP
View
Most Expensive
B
Brilliant Earth
5627585A · Oct 31
$2,111 NZD
$1,190 USD
View
21 more retailers have this diamond
Prices start from $486 NZDSave up to $1,625 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
1.54ct Oval
$486 NZD