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Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG685590864

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG685590864

Diamond specifications and retailer prices

From $484 NZD
$273 USD
As of November 1, 2026
Save $3,827 NZD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,312 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown oval diamond

This 1.51ct 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 LG685590864 or 685590864. Listed at 16 retailers as of October 31, 2026, with prices from $484 to $4,312, a $3,827 spread on the same certified stone. Do Amore Diamonds lists it at $4,312. 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

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685590864
Dimensions9.18 × 6.36 × 3.96 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.18 mm6.36 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685590864
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 62.3%

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: Nov 1
Current: $4,312 NZD|Low: $465 NZD|High: $4,312 NZD|Avg: $1,394 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 10$484 NZD
Retailer 13$562 NZD
Retailer 4$601 NZD
Retailer 11$601 NZD
Retailer 2$739 NZD
Retailer 3$1,065 NZD
Retailer 6$1,169 NZD
Retailer 8$1,220 NZD
Retailer 5$1,415 NZD
Retailer 9$1,847 NZD
Retailer 12$2,134 NZD
Retailer 7$2,675 NZD
Do Amore Diamonds$4,312 NZD

42 data points across 13 retailers

16 retailers$484 NZD to $4,312 NZD

A
Cheapest Retailer
-
$484 NZD
$273 USD
A
Retailer 2
-
$562 NZD
$317 USD
View
A
Retailer 3
-
$601 NZD
$339 USD
View
Retailer 4
-
$601 NZD
$339 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$708 NZD
$399 USD
View
A
Retailer 6
-
$739 NZD
£328 GBP
View
B+
Retailer 7
-
$802 NZD
$452 USD
View
B+
Retailer 8
-
$878 NZD
$495 USD
View
B+
Retailer 9
-
$1,065 NZD
$600 USD
View
B+
Retailer 10
-
$1,169 NZD
£519 GBP
View
B+
Retailer 11
-
$1,220 NZD
A$1,058 AUD
View
B+
Retailer 12
-
$1,415 NZD
$798 USD
View
B
Retailer 13
-
$1,847 NZD
$1,041 USD
View
B
Retailer 14
-
$2,134 NZD
$1,203 USD
View
B
Retailer 15
-
$2,675 NZD
£1,187 GBP
View
Most Expensive
B
Do Amore Diamonds
27-396100D34 · Oct 31
$4,312 NZD
$2,430 USD
View
15 more retailers have this diamond
Prices start from $484 NZDSave up to $3,827 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
1.51ct Oval
$484 NZD